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Ivanyuk, G. Economic minerals of the Kovdor baddeleyite apatite magnetite deposit, Russia: mineralogy, spatial distribution and ore processing optimization. The marginal zone of the pipe consists of apatite -forsterite phoscorite carrying fine grains of Ti-Mn-Si-rich magnetite with ilmenite exsolution lamellae, fine grains of Fe-Mg-rich apatite and finest grains of baddeleyite, enriched in Mg, Fe, Si and Mn.

The intermediate zone accommodates carbonate-free magnetite-rich phoscorites that carry medium to coarse grains of Mg-Al-rich magnetite with exsolution inclusions of spinel, medium-grained pure apatite and baddeleyite. The axial zone hosts carbonate-rich phoscorites and phoscorite-related carbonatites bearing medium-grained Ti-V-Ca-rich magnetite with exsolution inclusions of geikielite-ilmenite, fine grains of Ba-Sr-Ln-rich apatite and comparatively large grains of baddeleyite, enriched in Hf, Ta, Nb and Sc.

The collected data enable us to predict such important mineralogical characteristics of the multicomponent ore as chemical composition and grain size of economic and associated minerals, presence of contaminating inclusions, etc. We have identified potential areas of maximum concentration of such by-products as scandium, niobium and hafnium in baddeleyite and REEs in apatite.

Economic minerals of the Kovdor baddeleyite apatite magnetite deposit, Russia: mineralogy, spatial distribution and ore procesing optimization. Rare earth deposits of the Murmansk region, Russia - a review. Abstract: This paper reviews the available information on the geology, mineralogy, and resources of the significant rare earth element REE deposits and occurrences in the Murmansk Region, northwest Russia.

The measured and indicated REE2O3 resources of all deposits in the region total The most important resources occur in 1 the currently mined Khibiny titanite-apatite deposits, and 2 the Lovozero loparite-eudialyte deposit. The Kovdor baddeleyite-apatite-magnetite deposit is a potentially important resource of scandium. These deposits all have polymetallic ores, i. With the exception of the Afrikanda perovskite-magnetite deposit LREE in perovskite and the Kovdor baddeleyite-apatite-magnetite deposit scandium in baddelyite , carbonatite-bearing complexes of the Murmansk Region appear to have limited potential for REE by-products.

The sound transport, energy, and mining infrastructure of the region are important factors that will help ensure future production of the REE. Panikorovskii, T. Zr-rich eudialyte from the Lovozero peralkaline massif, Kola Peninsula, Russia. Eudialyte from the Alluaiv Mt. The detailed study of the chemical composition microprobe analyses of EGMs from the drill cores of the Mt.

Sun, J. The origin of low-MgO eclogite xenoliths from Obnazhennaya kimberlite, Siberian craton. These eclogites contain two types of compositionally distinct garnet: granular coarse garnet, and garnet exsolution lamellae and fine-grained garnet in clinopyroxene. The former record higher temperatures at lower pressures than the latter, which record the last stage of equilibrium at moderate pressure-temperature conditions 2. Although derived from the garnet stability field, these rocks have low-pressure cumulate protoliths containing plagioclase, olivine, and clinopyroxene as reflected by pronounced positive Eu and Sr anomalies in all eclogites, and low heavy rare earth element HREE contents in both minerals and reconstructed bulk rocks for a number of samples.

Major elements, transition metals, and the HREE compositions of the reconstructed whole rocks are analogous to modern oceanic gabbro cumulates. Despite geochemical signatures supporting an oceanic crust origin, mantle-like?

The origin of low-MgO eclogite xenoliths from Obnazhennaya kimberlite, Siberia craton. Abstract: The petrology, mineral major and trace element concentrations, and garnet oxygen isotopic composition of low-MgO wt.

These eclogites equilibrated at moderate pressure-temperature conditions 2. C at the time of entrainment. We therefore suggest that the Obnazhennaya low-MgO eclogites may represent the gabbroic section of subducted or foundered basaltic crust that underwent continued partial melting processes at high pressures where garnet was the main residual phase. Kostrovitsky, S. The exceptionally fresh Udachnaya -East kimberlite: evidence for brine and evaporite contamination. The nature of phlogopite - ilmenite and ilmenite parageneses in deep seated xenoliths from Udachnaya kimberlite pipe.

Abstract: The article describes the petrography and mineralogy of xenoliths ilmenite-phlogopite containing deformed and granular peridotites from the Udachnaya-Eastern pipe.

The age of pholopite porphyroclast from the studied deformed xenoliths matches with age of Phl megacryst and itself hosted kimberlites from Udachnaya pipe indicating the following processes closed in time: 1 crystallization of the low-Cr megacryst association; 2 deformation of rocks on the mantle lithosphere-asthenosphere border during the kimberlite-forming cycle; 3 formation of protokimberlite melts. Regularities of spatial association of major endogenous uranium deposits and kimberlitic dykes in the uranium ore regions of the Ukrainian Shield.

Ashchepkov, I. Incompatible element enriched mantle lithosphere beneath kimberlitic pipes in Priazovie Ukrainian shield: volatile enriched focused melt flow and connection to mature crust? Abstract: Major, minor and trace element compositions of mantle xenocrysts from Devonian kimberlite pipes in the Priazovie give an insight into the mantle structure beneath the SE Ukranian Shield and its evolution.

Garnets yield low temperature conditions as determined by monomineral thermobarometry. The mantle lithosphere is sharply divided at 4. Seven layers are detected: Ist layer at 2. IIId at 4. IVth at 3. Garnets from 6. A possible reason for LILE HFSE and enrichment of the upper part of the mantle is subduction metasomatsm in Archaean times with participation of mature continental sediments activated by plumes at 1.

Ashchepkov, V. Incompatible element-enriched mantle lithosphere beneath kimberlitic pipes in Proazovie, Ukrainian shield: volatile enriched focused melt flow and connection to mature crust? Metasomatic features in the mantle xenoliths from Obnajennaya kimberlite pipe - the mineral composition evidence. Abstract: The modal metasomatic alteration for lithosphere mantle may be investigated using mantle xenoliths from kimberlite pipes. The mantle xenoliths from upper-Jurassic Obnajennaya kimberlite pipe Kuoika field, Yakutia were studied.

Three main xenoliths groups in Obnajennaya pipe were distinguished based on the petrographic and geochemical features: 1. The clinopyroxene distribution curves demonstrate the wide range of values and altered samples show higher content HFSE group elements that primary clinopyroxene. The increasing of HFSE and rare earth element concentrations can also be traced by the amphibole chemical composition.

The high? O18 for garnet and clinopyroxene 5. This group are charactetrized are ferrous mineral composition. Silicate melt and fluid inclusions in olivine phenocryst from the Gataia lamproite Banat, Romania.

A melt evolution model for Kerimasi volcano, Tanzania: evidence from carbonate melt inclusions in jacupirangite. Petrographic observations and geochemical data show that during jacupirangite crystallization, a CaO-rich and alkali-"poor" carbonate melt relative to Oldoinyo Lengai natrocarbonatite existed and was entrapped in the precipitating magnetite, forming primary melt inclusions, and was also enclosed in previously crystallized clinopyroxene as secondary melt inclusions.

The composition of the trapped carbonate melts in magnetite and clinopyroxene are very similar to the parental melt of Kerimasi calciocarbonatite; i. Significant compositional variation is shown by the major minerals of Kerimasi plutonic rocks afrikandite, jacupirangite and calciocarbonatite.

Magnetite and clinopyroxene in the jacupirangite are typically transitional in composition between those of afrikandite and calciocarbonatite. These data suggest that the jacupirangite represents an intermediate stage between the formation of afrikandite and calciocarbonatite.

Jacupirangite most probably formed when immiscible silicate and carbonate melts separated from the afrikandite body, although the carbonate melt was not separated completely from the silicate melt fraction.

Volatiles were incorporated principally in nyerereite, shortite, burbankite, nahcolite and sulfohalite as identified by Raman spectrometry. These extremely unstable minerals cannot be found in the bulk rock, because of alteration by secondary processes. On the basis of these data, an evolutionary model is developed for Kerimasi plutonic rocks. The composition of the trapped carbonate melts in magnetite and clinopyroxene is very similar to the parental melt of Kerimasi calciocarbonatite; i.

A melt evolution for Kerimasi volcano, Tanzania: evidence from carbonate melt inclusions in jacupirangite. Abstract: The use of confocal HR-Raman mapping opens new perspectives in studying melt inclusions.

Our major goal is to show advantages of this powerful technique through case studies carried out on alkaline and carbonatite rocks of Kerimasi volcano East African Rift. Raman spectrometry is one of the few methods that enable qualitative nondestructive analysis of both solid and fluid phases, therefore it is widely used for the identification of minerals and volatiles within melt and fluid inclusions. For better understanding of petrogenetic processes in carbonatite systems it is essential to find all mineral phases in the melt inclusions trapped in intrusive or volcanic rocks.

Previous Raman spectroscopic point measurements in melt inclusions revealed the presence of daughter phases e. Raman 3D mapping were applied on unheated multiphase melt inclusions of intrusive and volcanic rocks with high spatial resolution XY plane DS Geological setting and petrographic diversity of the lamproite dykes at the northern and north eastern margin of the Cuddapah Basin, southern India.

New dat a on the age of the concentrically zoned dunite pyroxenite intrusions in the Ural platiniferous belt. Depletion of niobium relative to other highly incompatible elements by melt rock reaction in the upper mantle.

Gaubas, E. Lateral scan profiles of the recombination parameters correlated with distribution of grown-in impurities in HPHT diamond. The internal structure of yellow cuboid diamonds from alluvial placers of the northeastern Siberian platform. Abstract: Yellow cuboid diamonds are commonly found in diamondiferous alluvial placers of the Northeastern Siberian platform.

Most of these crystals have typical resorption features and do not preserve primary growth morphology. The resorption leads to an evolution from an originally cubic shape to a rounded tetrahexahedroid. Specific fibrous or columnar internal structure of yellow cuboid diamonds has been revealed.

Most of them are strongly deformed. Rare earth elements in the metamorphic rock complexes of the Key vyastructure of the Kola Peninsula. Kupriyanov, I. Homogenization of carbonate bearing Micro inclusions in diamond at P-T parameters of the upper mantle. The results mainly show that the carbonate phases, the daughter phases in partially crystallized microinclusions in diamonds, may undergo phase transformations under the mantle P-T conditions.

Most likely, partial melting and further dissolution of dolomite in the carbonate-silicate melt homogenization of inclusions occur in inclusions. However, it should be noted that the effect of selective capture of inclusions with partial loss of volatiles in relation to the composition of the crystallization medium is not excluded during the growth.

Nadolly, V. Formation features of N3V centers in diamonds from the Kholomolokh placer in the Northeast Siberian craton. Abstract: In recent years, despite significant progress in the development of new methods for the synthesis of diamond crystals and in their post-growth treatment, many questions remain unclear about the conditions for the formation and degradation of aggregate impurity nitrogen forms. Meanwhile, they are very important for understanding evaluating the origin, age, and post-growth conditions of natural diamonds.

In the present work, an attempt was made to analyze the causes of the formation of high concentrations of N3V centers in natural IaB-type diamonds from the Kholomolokh placer the Northeast Siberian craton. The possibility of decay of B centers during the plastic deformation of diamonds is analyzed and experiments on the high-temperature annealing of diamonds containing B centers are reported.

The formation of N3V centers during the destruction of the B centers at high-pressure annealing of crystals has been established by experiment. It is assumed that, in the post-growth period, diamond crystals were exposed to tectono-thermal stages of raising the superplumes of the Earth's crust of the Siberian craton.

Eclogitic diamonds from variable crustal protoliths in the northeastern Siberian Craton: trace elements and coupled Delta13C-delta signatures in diamonds and garnet inclusions. Silicate melt inclusions in diamonds of eclogite paragenesis from placers on the northeastern Siberian craton. Abstract: New findings of silicate-melt inclusions in two alluvial diamonds from the Kholomolokh placer, northeastern Siberian Platform are reported. Raman spectral analysis revealed that the composite inclusions consist of clinopyroxene and silicate glass.

Hopper crystals of clinopyroxene were observed using scanning electron microscopy and energy-dispersive spectroscopic analyses; these are different in composition from the omphacite inclusions that co-exist in the same diamonds. These composite inclusions are primary melt that partially crystallised at the cooling stage.

Hopper crystals of clinopyroxene imply rapid cooling rates, likely related to the uplift of crystals in the kimberlite melt.

The reconstructed composition of such primary melts suggests that they were formed as the product of metasomatised mantle. Mixed habit type Ib-IaA diamond from an Udachnaya eclogite. Abstract: The variety of morphology and properties of natural diamonds reflects variations in the conditions of their formation in different mantle environments. This study presents new data on the distribution of impurity centers in diamond type Ib-IaA from xenolith of bimineral eclogite from the Udachnaya kimberlite pipe.

The high content of non-aggregated nitrogen C defects in the studied diamonds indicates their formation shortly before the stage of transportation to the surface by the kimberlite melt. The observed sectorial heterogeneity of the distribution of C- and A-defects indicates that aggregation of nitrogen in the octahedral sectors occurs faster than in the cuboid sectors.

Local variations in carbon isotopes and nitrogen contents in diamonds from placers of the northeastern portion of the Siberian Platform. Carbon isotopes and nitrogen contents in placer diamonds from the NE Siberian craton: implications for diamond origins. Diamondiferous subcontinental lithospheric mantle of the northeastern Siberian craton: evidence from mineral inclusions in alluvial diamonds.

Diamondiferous subcontinental lithospheric mantle of the northeastern Siberian Craton: evidence from mineral inclusions in alluvial diamonds. Kapchan Fold Belt Olenek Province. Regular cuboid diamonds from placers on the northeastern Siberian platform.

Abstract: Alluvial placers of the northeastern Siberian Platform are characterized by a specific diamond population: regular cuboids, forming a continuous color series from yellowish-green to yellow and dark orange. This is the first comprehensive study of a large number of cuboid diamonds focusing on their morphology, N content and aggregation state, photoluminescence, C isotopic composition and inclusions.

The cuboids are cubic i. The cathodolominescence images and the birefringence patterns show that many cuboid diamonds record deformation. The cuboid diamonds are characterized by unusual FTIR spectra with the presence of C- single nitrogen atom and A- pair of neighbour nitrogen atoms centers, and two centers of unknown origin, termed X and Y. The presence of single substitutional nitrogen defects C centers in all cuboid diamonds testifies either storage in the mantle at relatively cool conditions or formation just prior to eruption of their host kimberlites.

The cuboid diamonds show a wide range of carbon isotope compositions from mantle-like values towards strongly 13C depleted compositions? Combined with the finding of an eclogitic sulfide inclusion, the light carbon isotope compositions link the formation of the studied cuboids to deeply subducted basic protoliths, i. Spectroscopic evidence of the origin of brown and pink diamonds family from Internatsionalnaya kimberlite pipe Siberian craton.

Physics and Chemistry of Minerals , Vol. Abstract: New spectroscopic data were obtained to distinguish the specific features of brown and pink diamonds from Internatsionalnaya kimberlite pipe Siberian craton.

It is shown that pink and brown samples differ markedly in the content and degree of aggregation of nitrogen defects. Pink diamonds generally have higher nitrogen content and a lower aggregation state compared to brown samples, which often show significant variations in nitrogen content and aggregation state between different growth zones.

The and nm luminescent centres, which are signs of deformed brown diamonds, are absent or of low intensity in pink diamonds implying that high nitrogen content predominantly in A form in the pink diamonds had stiffened the diamonds against natural plastic deformation.

The GR1 centre, formed by a neutrally charged vacancy, was observed only in pink diamonds, which may be due to their formation and storage in the mantle at lower-temperature conditions. Mineral inclusions indicate peridotitic and eclogitic paragenesis for studied brown and pink diamonds, respectively. Zemnukhov, A. Subduction related population of diamonds in Yakutian placers, northeastern Siberian platform. Contributions to Mineralogy and Petrology , Vol.

Abstract: The 35 paired diamond intergrowths of rounded colorless transparent and gray opaque crystals from the placers of northeastern Siberian Platform were investigated. The majority of studied samples have uniform ranges of nitrogen content at.

These characteristics pointing towards subducted material are possible sources for their genesis. Two samples consist of a gray opaque crystal with the subduction-related characteristics? The higher degree of nitrogen aggregation in the crystals with mantle-like characteristics testifies their longer storage in the mantle conditions.

These samples reflect multistage diamond growth history and directly indicate the mixing of mantle and subduction carbon sources at the basement of subcontinental lithospheric mantle of northeastern Siberian Platform. Zedgenizov, D. Diamond forming HDFs tracking episodic mantle metasomatism beneath Nyurbinskaya kimberlite pipe Siberian craton.

Abstract: We present a new dataset on the composition of high-density fluids HDFs in cloudy n? These diamonds represent different populations each showing distinct growth histories. The cores of coated diamonds display multiple growth stages and contrasting sources of carbon. Fibrous coats and cuboid diamonds have similar carbon isotopes and nitrogen systematics, suggesting their formation in the last metasomatic events related to kimberlite magmatism, as is common for most such diamonds worldwide.

The HDFs in most of these diamonds span a wide range from low-Mg carbonatitic to hydrous silicic compositions. The major- and trace-element variations suggest that the sources for such HDFs range in composition between the depleted mantle and more fertile mantle reservoirs. Hydrous-silicic HDFs could originate from a 13C-enriched source, which originates through subduction of crustal metasedimentary material.

Percolation of such HDFs through carbonated eclogites and peridotites facilitates the formation of cuboid diamonds and fibrous coats in the mantle section beneath the corresponding area of the Siberian craton. Cloudy diamonds represent an apparently older population, reflecting continuous diamond formation predominantly from high-Mg carbonatitic HDFs that caused discrete episodes of diamond precipitation.

Their high Mg and enrichment in incompatible elements support a metasomatized peridotitic source for these HDFs. Alkaline ultramafic rocks in the pipes of the Tersky coast of Kola Peninsula- a new type of Paleozoic magmatism. Alkalic ultramafics in diatremes on the Terskiy coast of the KolaPeninsula: a new type of Paleozoic magmatism. Diamonds and associated minerals in kimberlites and loose sediments of Tersky shore Kola Peninsula.

Buikin, A. Distribution of mantle and atmospheric argon in mantle xenoliths from western Arabian Peninsula: constraints on timing and composition of metasomatizing agents Solomatova, N. Equation of state and spin crossover of Mg,Fe O at high pressure, with implications for explaining topographic relief at the core mantle boundary.

Kolonrect Kolonwirt. Results of the preliminary geological and mineralogical investigations for the discovery of diamonds and precious stones in the Qishon basin area. Simakov, S. Assessment of Diamondiferous perspectives of east European Platform according to the dat a of sounding On the robustness of estimates of mechanical anisotropy in the continental lithosphere: a North American case study and global reanalysis. Plethean, J.

Madagascar's escape from Africa: a resolution plate reconstruction for the Western Somali Basin and for supercontinent dispersal. Abstract: Accurate reconstructions of the dispersal of supercontinent blocks are essential for testing continental breakup models. Here, we provide a new plate tectonic reconstruction of the opening of the Western Somali Basin during the breakup of East and West Gondwana.

The model is constrained by a new comprehensive set of spreading lineaments, detected in this heavily sedimented basin using a novel technique based on directional derivatives of free-air gravity anomalies. Vertical gravity gradient and free-air gravity anomaly maps also enable the detection of extinct mid-ocean ridge segments, which can be directly compared to several previous ocean magnetic anomaly interpretations of the Western Somali Basin.

The best matching interpretations have basin symmetry around the M0 anomaly; these are then used to temporally constrain our plate tectonic reconstruction. The reconstruction supports a tight fit for Gondwana fragments prior to breakup, and predicts that the continent-ocean transform margin lies along the Rovuma Basin, not along the Davie Fracture Zone DFZ as commonly thought.

According to our reconstruction, the DFZ represents a major ocean-ocean fracture zone formed by the coalescence of several smaller fracture zones during evolving plate motions as Madagascar drifted southwards, and offshore Tanzania is an obliquely rifted, rather than transform, margin. New seismic reflection evidence for oceanic crust inboard of the DFZ strongly supports these conclusions.

Our results provide important new constraints on the still enigmatic driving mechanism of continental rifting, the nature of the lithosphere in the Western Somali Basin, and its resource potential. X-ray tomographic study of spatial distribution of Micro inclusions in natural fibrous diamonds. Paleoproterozoic Ma rift related volcanism in the Hekla Sund region, field occurrence, geochemistry. Age of rocks, structures and metamorphism in the Nagssugtoqidian Mobile belt - fold and lead isotope evidence.

Archean and Proterzoic crust in Northwest Greenland: evidence from Rubidium-Strontium whole rock age determinations. Geochemistry, tectonic setting, poly orogenic history of Paleoproterozoic basement rocks from Caledonian belt. Geochemistry and tectonic significance of peridotitic and metakomatiitic rocks from Us suit area. Upton, B. The Mesoproterozoic Zig-Zag Dal basalts and associated intrusions of eastern North Greenland: mantle plume lithosphere interaction.

Micro-Raman spectroscopy assessment of chemical compounds of mantle clinopyroxenes. Abstract: The composition of clinopyroxenes is indicative for chemical and physical properties of mantle substrates. The chemical composition of studied clinopyroxenes shows wide variations indicating their origin in different mantle lithologies. The peak position of the stretching vibration mode? These correlations may be used for rough estimation of these compounds using the non-destructive Raman spectroscopy technique.

Sharygin, I. Relics of deep alkali-carbonate melt in the mantle xenolith from the Komosomolskaya-Magnitnaya kimberlite pipe Upper Muna field, Yakutia. Abstract: The results of study secondary crystallized melt inclusions in olivine of a sheared peridotite xenolith from the Komsomolskaya-Magnitnaya kimberlite pipe Upper Muna field, Yakutia are reported. The abundance of alkali carbonates in the inclusions indicates the alkali-carbonate composition of the melt.

Previously, identical inclusions of alkali-carbonate melt were reported in olivine of sheared peridotites from the Udachnaya pipe Daldyn field. Melt inclusions in sheared peridotites are the relics of a crystallized kimberlite melt that penetrated into peridotites either during the transport of xenoliths to the surface or directly in the mantle shortly prior to the entrapment of xenoliths by the kimberlite magma.

If the second scenario took place, the finds of alkali-carbonate melt inclusions in sheared peridotites carried from different mantle depths in the Udachnaya and Komsomolskaya-Magnitnaya kimberlite pipes indicate a large-scale metasomatic alteration of the lithospheric mantle of the Siberian Craton by alkaline-carbonate melts, which preceded the kimberlite magmatism.

However, regardless of which of the two models proposed above is correct, the results reported here support the alkali-carbonate composition of primary kimberlite melts. Perepelov, A. Keulen, N. Formation, origin and geographic typing of corundum ruby and pink sapphire from the Fiskenaesst complex, Greenland. Abstract: Metamorphic petrology observations on rubies found in-situ in their host-rock are combined with geochemical measurements and optical microscopy observations on the same rubies, with the aim of connecting the ruby-forming metamorphic reaction to a unique fingerprint for these minerals.

Isochemical pressure-temperature sections were calculated based on electron microprobe and whole-rock geochemistry analyses, and compared to field observations. In order to establish the unique fingerprint for this ruby-bearing ultramafic complex, laser-ablation inductively-coupled-plasma mass-spectrometry trace-element measurements, oxygen isotope compositions, optical microscopy and scanning electron microscopy were applied.

Results for other Greenland localities are presented and discussed as well. Even though these are derived from ultramafic rock settings too, they record different trace-element ratios and oxygen isotope values, resulting from variations in the Archaean ruby-forming reaction. Melting of iron silicon alloy up to the core mantle boundary pressure: implications to the thermal structure of the Earth's core. The reactions in the MgCO3-SiO2 system in the slabs subducted into the lower mantle and formation of deep diamond.

Abstract: Diamond is an evidence for carbon existing in the deep Earth. Some diamonds are considered to have originated at various depth ranges from the mantle transition zone to the lower mantle. These diamonds are expected to carry significant information about the deep Earth. GPa and 3,? K using a double sided laser-heated diamond anvil cell combined with in situ synchrotron X-ray diffraction. These observations suggested that the reaction of the MgCO3 phase II with SiO2 causes formation of super-deep diamond in cold slabs descending into the deep lower mantle.

Tanaka, R. The sound velocity of wustite at high pressures: implications for low-velocity anomalies at the base of the lower mantle. Abstract: The longitudinal sound velocity VP and the density? GPa and temperatures of up to ? K using both inelastic X-ray scattering and X-ray diffraction combined with a laser-heated diamond-anvil cell. The linear relationship between VP and?

Osovetskii, B. Trace element analysis and U-Pb geochronology of perovskite and its importance for tracking unexposed rare metal and diamond deposits. Significance of halogens F, Cl in kimberlite melts: insights from mineralogy and melt inclusions in the Roger pipe Ekati, Canada. Abstract: The abundance and distribution of halogens F, Cl are rarely recorded in kimberlites and therefore their petrogenetic significance is poorly constrained.

Halogens are usually present in kimberlite rocks in the structure of phlogopite and apatite, but their original concentrations are never fully retained due to the effects of alteration. To provide new constraints on the origin and evolution of halogens in kimberlites and their melts, we present a detailed study of the petrography and geochemistry of the late-Cretaceous Group-I or archetypal Roger kimberlite Ekati cluster, Canada.

The studied samples contain abundant anhedral-to-euhedral olivine which is set in a crystalline groundmass of monticellite, phlogopite, apatite, spinel i.

The Roger kimberlite is characterised by the highest recorded F-content up to ppm of the Ekati cluster kimberlites, which is reflected by the preservation of F-rich phases, where bultfonteinite Ca4 Si2O7 F, OH 2 and fluorite commonly replace olivine. In order to examine the composition and evolution of the kimberlite melt prior to post-magmatic processes, we studied melt inclusions in olivine, Cr-spinel, monticellite and apatite.

Comparisons between halogens and other trace elements of similar compatibility i. Abersteiner, A. Monticellite in group I kimberlites: implications for evolution of parallel melts and post emplacement CO2 degassing.

Leslie, Pipe 1. To provide new constraints on the petrogenesis of monticellite and its potential significance to kimberlite melt evolution, we examine the petrography and geochemistry of the minimally altered hypabyssal monticellite-rich Leslie Canada and Pipe 1 Finland kimberlites. Integrating magnetic and gravity for mapping the Earth structure using color scheme: a case study of Botswana. Xenoliths in kimberlite, melilitite and carbonatite dykes from the East Sayan foothill carbonatite complex.

Age significance of uranium-thorium-lead zircon dat a from early Archean rocks of West Greenland - a reassessment based. Westward continuation of the craton-Limpopo Belt tectonic break in Zimbabwe and new age constraints.. Westward continuation of the craton-Limpopo Belt tectonic break and new age constraints of the thrusting. An exsolution origin for Archaean mantle garnet. Abstract: It is now well established that the cratonic sub-continental lithospheric mantle SCLM represents a residue of extensively melted fertile peridotite.

The widespread occurrence of garnet in the Archaean SCLM remains a paradox because many experiments agree that garnet is exhausted beyond c. It has been suggested that garnet may have formed by exsolution from Al-rich orthopyroxene [1,2,3]. However, the few examples of putative garnet exsolution in cratonic samples remain exotic and have not afforded a link to garnet that occurs as distinct grains in granular harzburgite.

Garnet lamellae within the megacryst show crystallographic continuity and have a strong fabric relative to the host orthopyroxene, strongly indicating that the megacryst formed by exsolution. Garnet lamellae are sub-calcic Cr-pyropes with sinusoidal rare earth element patterns, while the orthopyroxene host is high-Mg enstatite; the reconstructed precursor is clinoestatite. The megacryst shows evidence for disintegrating into granular peridotite, and garnet and orthopyroxene within the granular peridotite are texturally and chemically identical to equivalent phases in the megacryst.

Collectively, this evidence supports a common origin for the granular and exsolved portions of the sample. The compositions of the exsolved Cr pyrope and enstatite are typical of harzburgites and depleted lherzolites from the SCLM.

Furthermore, garnet inclusions within orthopyroxene in several granular peridotites exhibit the same fabric as those in the exsolved megacryst. We hypothesise that clinoenstatite was a common phase in cratonic SCLM and that exsolution is the likely origin of many sub-calcic garnets in depleted peridotites.

Growth of subcontinental lithospheric mantle beneath Zimbabwe started at or before 3. Age significance of uranium-thorium-lead-zircon dat a from early Archean rocks of West Greenland - a reassessment.. Fluid mobile trace element constraints on the role of slab melting and implications for Archean crustal growth models. Lamproites from Gaussberg, Antartica: possible transition zone melts of Archean subducted sediments. Lamproites from Gaussberg, Antarctica: possible transition zone melts of Archean subducted sediments.

A refined solution to Earth's hidden niobium: implications for evolution of continental crust and mode of core formation. Mantle and crustal processes in the Hadean and Archean: evidence for the onset of subduction at 3. A review of isoptopic and trace element evidence for mantle and crustal processes in the Hadean and Archean: implications for the onset of plate tectonic subduction. Majoritic garnet: a new approach to pressure estimation of shock events in meteorites and the encapsulation of sub-lithospheric inclusions in diamonds.

On the track of the elusive Sudbury impact: geochemical evidence for a chondrite or comet bolide. Differentiated impact melt sheets may be potential source of Hadean detrital zircon. Abstract: Constraining the origin and history of very ancient detrital zircons has unique potential for furthering our knowledge of Earth's very early crust and Hadean geodynamics. This could possibly indicate wet minimum-melting conditions producing granitic melts, implying very different Hadean terrestrial geology from that of other rocky planets.

Here we report the first comprehensive ion microprobe study of zircons from a transect through the differentiated Sudbury impact melt sheet Ontario, Canada.

The new zircon Ti results and corresponding Tzirxtln fully overlap with those of the Hadean zircon population. Previous studies that measured Ti in impact melt sheet zircons did not find this wide range because they analyzed samples only from a restricted portion of the melt sheet and because they used laser ablation analyses that can overestimate true Ti content.

It is important to note that internal differentiation of the impact melt is likely a prerequisite for the observed low Tzirxtln in zircons from the most evolved rocks. On Earth, melt sheet differentiation is strongest in subaqueous impact basins. Thus, not all Hadean detrital zircon with low Ti necessarily formed during melting at plate boundaries, but at least some could also have crystallized in melt sheets caused by intense meteorite bombardment of the early, hydrosphere-covered protocrust.

Abstract: Olivine offers huge, largely untapped, potential for improving our understanding of magmatic and metasomatic processes. In particular, a wealth of information is contained in rare earth element REE mass fractions, which are well studied in other minerals.

However, REE data for olivine are scarce, reflecting the difficulty associated with determining mass fractions in the low ng g? Empirical partition coefficients D values calculated using the new olivine compositions agree with experimental values, indicating that the measured REEs are structurally bound in the olivine crystal lattice, rather than residing in micro-inclusions.

We conducted an initial survey of REE contents of olivine from mantle, metamorphic, magmatic and meteorite samples. REE mass fractions vary from 0. Heavy REEs vary from low mass fractions in meteoritic samples, through variably enriched peridotitic olivine to high mass fractions in magmatic olivines, with fayalitic olivines showing the highest levels.

Why Archean cratons differ from younger continental lithosphere. Abstract: The most outstanding features of Archaean cratons are their extraordinary thickness and enduring longevity.

Seismically, Archaean cratonic fragments are sharplybounded deep roots of buoyant cold lithospheric mantle, clearly distinguishable from non-cratonic lithosphere.

The age of diamond inclusions and the Os-isotope composition of deep cratonic xenoliths support a model of coeval formation of the crustal and residual mantle portions. Archaean and post-Archaean crust also differ, not in bulk composition, but in crustal architecture. Key drivers of crustal rearrangment were the radioactive heat-producers U, Th and K. In the early Earth, high radioactive heat production led to self-organisation into evolved, potassic upper and refractory lower crust. The lag time between crust formation and reorganisation was much shorter than today.

An additional factor contributing to cratonic restructuring was the emplacement of dense supracrustal rocks in ensialic greenstone belts, leading to gravitational inversion. The dome and keel architecture of Archaean cratons was thus driven by crustal radioactive heat and high temperature mantle melting, yielding dense, low viscosity lavas piling up at surface.

A pleasing complementary observation from cratonic mantle roots is that refractory mantle nodules also suggest very high degrees of melting and extraction. With higher degree and depth of melting, a thicker and severely depleted bouyant cratonic residue was formed, perfectly equipped to preserve the Archaean crustal record. However, there are significant inconsistencies in this otherwise convincing line of reasoning.

They include: Archaean crust is not especially thick, the dunites expected after very high degree melting are rare, many cratonic harzburgites are much richer in orthopyroxene than predicted [1], and cratonic harzburgites often contain garnet.

Finding a solution to these issues has important ramifications for secular evolution of the continents and thermal evolution of the mantle. In this presentation, I will contrast the various proposed solutions, including purging of surprisingly carbonated ancient mantle [e.

Juvenile crust formation in the Zimbabwean Craton deduced from the O-Hf isotopic record 3. Abstract: Hafnium and oxygen isotopic compositions measured in-situ on U-Pb dated zircon from Archaean sedimentary successions belonging to the 2.

Microstructural and compositional criteria were used to minimize effects arising from Pb loss due to metamorphic overprinting and interaction with low-temperature fluids. Hf-time space, 3. Crustal domains formed after 3. Protracted remelting was not accompanied by significant mantle depletion prior to 3. This implies that early crust production in the Zimbabwe Craton did not cause complementary enriched and depleted reservoirs that were tapped by later magmas, possibly because the volume of crust extracted and stabilised was too small to influence asthenospheric mantle isotopic evolution.

Growth of continental crust through pulsed emplacement of juvenile chondritic mantle-derived melts, into and onto the existing cratonic nucleus, however, involved formation of complementary depleted subcontinental lithospheric mantle since the early Archaean, indicative of strongly coupled evolutionary histories of both reservoirs, with limited evidence for recycling and lateral accretion of arc-related crustal blocks until 3.

An exsolution origin for Archean mantle garnet. Abstract: It is well established that the cratonic subcontinental lithospheric mantle C-SCLM represents a residue of extensively melted peridotite. The widespread occurrence of garnet in C-SCLM remains a paradox because experiments show that it should be exhausted beyond?

It has been suggested that garnet may have formed by exsolution from Al-rich orthopyroxene; however, the few documented examples of garnet exsolution in cratonic samples are exotic and do not afford a direct link to garnet in granular harzburgite. We report crystallographic, petrographic, and chemical data for an exceptionally well preserved orthopyroxene megacryst containing garnet lamellae, juxtaposed against granular harzburgite.

Garnet lamellae are homogeneously distributed within the host orthopyroxene and occur at an orientation that is unrelated to orthopyroxene cleavage, strongly indicating that they formed by exsolution. Garnet lamellae are subcalcic Cr-pyrope, and the orthopyroxene host is high-Mg enstatite; these phases equilibrated at 4.

The reconstructed precursor is a high-Al enstatite that formed at higher pressure and temperature conditions of? We hypothesize that high-Al enstatite was a common phase in the C-SCLM and that exsolution during cooling and stabilization of the C-SCLM could be the origin of most subcalcic garnets in depleted peridotites. Petrological, mineralogical and geochemical pecularities of Archaean cratons. Seismically, Archaean cratonic fragments are sharply-bounded deep roots of mechanically strong, cold lithospheric mantle, clearly distinguishable from non-cratonic lithosphere.

Rhenium-depletion of deep cratonic xenolith whole rocks and sulphide inclusions in diamond indicate that melting was broadly coeval with formation of the overlying proto-cratonic crust, which was of limited mechanical strength. A very important process of proto-cratonic development was vertical crustal reorganisation that eventually yielded a thermally stable, cratonised crust with a highly K-U-Th-rich uppermost crust and much more depleted deeper crust.

Clastic sedimentary rocks available for geochemical study are predominantly found in the youngest parts of supracrustal stratigraphies and over-represent the highly evolved rocks that appeared during cratonisation.

Vertical crustal reorganisation was driven by crustal radiogenic heat and emplacement of proto-craton-wide, incubating and dense supracrustal mafic and ultramafic volcanic rocks. Statistical analysis of these cover sequences shows a preponderance of basalt and a high abundance of ultramafic lavas with a dearth of picrite. The ultramafic lavas can be grouped into Ti-enriched and Ti-depleted types and high pressure and temperature experimental data indicate that the latter formed from previously depleted mantle at temperatures in excess of ?

Most mantle harzburgite xenoliths from cratonic roots are highly refractory, containing very magnesian olivine and many have a high modal abundance of orthopyroxene. High orthopyroxene mode is commonly attributed to metasomatic silica-enrichment or a non-pyrolitic mantle source but much of the excess silica requirement disappears if melting occurred at high pressures of ? In many harzburgites, there is an intimate spatial association of garnet and spinel with orthopyroxene, which indicates formation of the Al-phase by exsolution upon cooling and decompression.

New and published rare earth element REE data for garnet and orthopyroxene show that garnet has inherited its sinusoidal REE pattern from the orthopyroxene. The lack of middle-REE depletion in these refractory residues is consistent with the lack of middle- over heavy-REE fractionation in most komatiites.

This suggests that such pyroxene or garnet or precursor phases were present during komatiite melting. In the Kaapvaal craton, garnet exsolution upon significant cooling occurred as early as 3. Ga and geobarometry of diamond inclusions from ancient kimberlites also supports cool Archaean cratonic geotherms. This requires that some mantle roots have extended to to possibly ? We maintain that the Archaean-Proterozoic boundary continues to be of geological significance, despite the recognition that upper crustal chemistry, as sampled by sedimentary rocks, became more evolved from ca.

Ga onwards. The boundary coincides with the disappearance of widespread komatiite and marks the end of formation of typical refractory cratonic lithosphere. This may signify a fundamental change in the thermal structure of the mantle after which upwellings no longer resulted in very high temperature perturbations. One school of thought is that the thermal re-ordering occurred at the core-mantle boundary whereas others envisage Archaean plumes to have originated at the base of the upper mantle.

Here we speculate that Archaean cratonic roots may contain remnants of older domains of non-convecting mantle. These domains are potential carriers of isotope anomalies and their base could have constituted a mechanical and thermal boundary layer.

Above laterally extensive barriers, emerging proto-cratons were protected from the main mantle heat loss. The surviving cratons may therefore preserve biased evidence of geological processes that operated during the Archaean. The Influence of large bolide impacts on Earth's carbon cycle.

Abstract: Human society's rapid release of vast quantities of CO2 into the atmosphere is a significant planetary experiment. An obvious natural process capable of similar emissions over geologically short time spans are very large bolide impacts. When striking a carbon-rich target, bolides significantly, and potentially catastrophically, disrupt the global biogeochemical carbon cycle.

Independent factors, such as sulfur-rich targets, redox state of the oceans or encountering ecosystems already close to a tipping point, dictated the magnitude of further consequences and determined which large bolide strikes shaped Earth's evolution. On the early Earth, where carbon-rich sedimentary targets were rare, impacts may not have been purely destructive. Instead, enclosed subaqueous impact structures may have contributed to initiating Earth's unique carbon cycle.

Depth-dependent peridotite-melt interaction and the origin of variable silica in the cratonic mantle. Abstract: Peridotites from the thick roots of Archaean cratons are known for their compositional diversity, whose origin remains debated. We report thermodynamic modelling results for reactions between peridotite and ascending mantle melts. Reaction between highly magnesian melt komatiite and peridotite leads to orthopyroxene crystallisation, yielding silica-rich harzburgite.

By contrast, shallow basalt-peridotite reaction leads to olivine enrichment, producing magnesium-rich dunites that cannot be generated by simple melting. Komatiite is spatially and temporally associated with basalt within Archaean terranes indicating that modest-degree melting co-existed with advanced melting. We envisage a relatively cool mantle that experienced episodic hot upwellings, the two settings could have coexisted if roots of nascent cratons became locally strongly extended.

Alternatively, deep refractory silica-rich residues could have been detached from shallower dunitic lithosphere prior to cratonic amalgamation. Regardless, the distinct Archaean melting-reaction environments collectively produced skewed and multi-modal olivine distributions in the cratonic lithosphere and bimodal mafic-ultramafic volcanism at surface. Fernandes, A. Karfunkel, J. De Al. Detailed mapping, aimed at characterizing the Mata da Corda Group of Upper Cretaceous age of Coromandel, has been carried out.

This Group was divided into the Patos Formation, composed of kimberlitic and kamafugitic rocks, and the Capacete Formation, presented by conglomerates, pyroclastic rocks, arenite and tuffs. The results have been compared to studies of the kimberlite bodies in the nearby Douradinho River. Kimberlite indicator minerals from these localities show the same compositional trend. Moreover, in the basal conglomerate of the Garimpo Canastrel two diamonds diamonds have been recovered and described. These detailed investigations suggest that the basal conglomerates of the Capacete Formation represent the main source rock of the alluvial diamond deposits in the Coromandel region.

Diamonds from the Coromandel area, west Minas Gerais State, Brazil: an update and new dat a on surface sources and origin. Abstract: Important diamond deposits southeast of Coromandel and the local geology have been studied in an attempt to understand what surface source provided the stones. The upper cretaceous Capacete Formation of the Mata da Corda Group, composed of mafic volcanoclastic, pyroclastic and epiclastic material, has been worked locally for diamonds, nevertheless considered non-economic.

The authors present results of their study of a deactivated small mine, representing the first report with description and analyses of two gem diamonds washed from this material. Hundreds of kimberlites, discovered in the last half century in the region, are sterile or non-economic.

The volume of this material is enormous representing a potential resource for large-scale mining. The authors suggest detailed studies of the volcanic facies of this unit focusing on the genesis, distribution and diamond content.

As to the question concerning the origin of these diamondiferous pyroclastic rocks, the authors exclude the kimberlites and point towards the large Serra Negra and Salitre alkaline complexes which are considered the primary source for the pyroclastic units of the Mata da Corda Group.

They propose that early eruptive phases of this alkaline complex brought diamonds from a mantle source to the surface, much as happens with traditional kimberlites, to explain the association of such huge carbonatite complexes and diamonds. Chalapathi Rao, N. Petrology, geochemistry and genesis of new Mesoproterozoic high magnesian calcite rich kimberlites of Siddanpalli, eastern Dharwar Craton Limestone xenolith in Siddanpalli kimberlite, Gadwal granite greenstone terrain, eastern Dhwar Craton: remnant of Proterozoic platformal cover sequence - age.

Limestone xenolith in Siddanpalli kimberlite, Gadwal granite - greenstone terrain, Eastern Dhawar Craton, southern India: remnant of Proterozoic platformal cover sequence of B. Petrology, geochemistry and genesis of newly discovered Mesoproterozoic highly magnesian, calcite rich kimberlites from Siddanpalli, Eastern Dharwar Craton.

Petrology, geochemistry and genesis of newly discovered Mesoproterozoic highly magnesian, calcite rich kimberlites from Siddanpalli, eastern Dharwar Craton Analysis of structural lineaments and their effect on the distribution of ring complexes in southeastern desert, Egypt. International Conference on Ore Potential of alkaline, kimberlite and carbonatite magmatism. Picrites from the Emeishan large igneous province, SW China: a compositional continuum in primitive magms and their respective mantle sources.

Kamenetsky, M. Olivine in the Udachnaya East kimberlite Yakutia, Russia : morphology, compositional zoning and origin. Prices were also cut on two EGA s. Macintosh-compatible world. The program is scheduled for release in the fourth quarter. At times you need to add it. Or rearrange it. Or change it. Or just even look at it.

Because no other tool offers the versatility that this software utility does. It also has extensive logic selection capability. File-AID can manipulate any record structure or data format. We make it even easier with a training video, a convenient and complete guide for users. Case closed. Within the U. Postal Service, a courier or telex. Compuware also takes the mystery out of databases by providing extensive support.

Compuware takes the mystery out of databases by taking the guesswork out for you. Conversely, users retain connectivity to their host system.

Centaur II can contain between one! Ollerton, director of product marketing for Celerity. The , available with up to four scalar processors or up to two vector processors working in combination with two scalar processors, is the first Celerity to perform parallel processing by breaking down a problem to run simultaneously on several CPUs, according to Ollerton. It is available with up to K bytes of cache, IG byte of memory and 44G bytes of disk storage. X Windows is a portable architecture for developing network-based windowing applications for workstations.

MIT also announced that it is forming a consortium of industrial companies to continue X Windows development. Because as data processing evolves, the need to improve pro- ductivity becomes greater. And most recently, DB2. In Michigan Educational Resources Compuware offers, were developed to answer the growing needs of data processing. A vision of how information management would evolve over the next several years.

With new types of computer users and new computing needs. And our strategy for making our vision a reality was to build it upon the most aavanced technology we could find. And a 4GL that out-performs anything in the present. The software, that is. The company is already taken. For more information call Debbie Cox at It is in this light that Judge Harold H. The technical effectiveness of most copy protection programs has improved to where there is virtually no legitimate argument against it.

Newbury Park, Calif. L, in a big way. The suit is also filed against Bridge Technology, Inc. Microvax II, and he knows nothing about either. I can tell you that I am one woman who j will not just stay and put up with it, and neither should anyone! That is how we can bring j about a change — how unfortu- nate for all involved. Gilbert Jackson, Miss. Some of what was said was confusing.

Thus, it was not clear if MIS graduates, as opposed to computer science graduates hired by MIS departments, also have the same deficiencies. Well, a lot happened in the subsequent two years. The booming mainframe market of and turned into the doldrums of , and And IBM did such a good job convincing customers that the was a solid box that many bought inexpensive, used s instead of s.

Aside from its intrinsic value. I expect to see knock-offs of both products shortly. So what is it? First of all, hypertext is a concept, dreamed up by Computer Lib author Ted Nelson. Consider a text file. However, the text file is still basically linear. You could examine it and then move on from there, or you could go back to where you were. Documents are assembled from needs. For example, you could turn a reference or etiquette manual into hypertext, with links from soup spoons in the appetizers chapter to dessert spoons from the dessert chapter.

In other words, hypertext allows you to structure text in many different ways and lets the user maneuver easily through it. Some systems control video monitors: Press the right button, and you get a video clip. Instead of hypertext, you get HyperCard, with pointers between these cards, which are are basically screenfuls of data. These cards can also have fields and can be sorted, indexed and searched by the data in these fields.

This program could also be copied, with the boilerplate of the letter altered, and attached to another form. HyperCard will use that name to search a card file for phone numbers, then automatically dial that number. HyperCard gives the user a sense of power and offers as much programming capability as he is prepared to use.

The possibilities are endless. It can do anything you want — if you think to tell it to. Will the assumptions that IBM is building into its mid-range processor strategy still hold true in ?

There is a moral to this story. To customers: All vendors, including IBM, change their strategic directions when market conditions change. I understand that the statistics I would prefer to see are not easy to compile. MIS professionals and educators know that the field is young and its direction unclear. Entry-level expectations, salary levels and the value of work experience must be different with educational status. Jill Smith, Ph.

Hakenower Brockton, Mass. Computerworld welcomes comments from its readers. Box , Cochituate Road, Framingham, Mass. Choose Realia. Imagine that. The power of Epson being put into millions of hands. Like the hands of Kate Grant. Give or take a few seconds. Equity is a trademark of Epson America, Inc. CA Most include 4GL tools. And they all claim to deliver performance. But once you get your hands on these products, the differences are dramatic. No wonder. INGRES has been designed from top to bottom to support developers of performance- critical applications.

And makes them easy to maintain. The most important thing about a DBMS is the way it performs for you. Just send this coupon or call us.

When structured analysis and real-time and data modeling are done in the same data base, the different teams can validate the specifications they are using, Nastec officials claimed. The diagramming interface provides pop-up menus and a mouse for moving symbols around the screen or changing them, Nastec spokesmen said.

The option can check state- transition diagrams against flow diagrams and verify that events are consistent between them.

It is so resource efficient, it easily supports tens of thousands of users in the data base, with many hundreds concurrently on-line. Call for a free trial or more information. In Florida, call All rights reserved. To turn raw data into meaningful facts. To analyze, estimate, optimize, simulate. To produce custom reports and color graphs. Whatever your information need, the SAS System delivers more from the data you store.

Explore Your Data. Forecast sales and cash flow. Perform statistical analyses. Build financial and planning models. Create spreadsheets of unlimited size. Schedule projects for best use of time and resources. Produce stacks of personalized letters. Generate calendars, charts, and many other formatted reports. Spot relationships and graph trends with powerful presentation graphics.

Customize these applications any way you wish. If You Know Data Bases. End users, even those who know nothing about data bases, have immediate access to the data they need.

Update values in a data base directly from a SAS System application. All without risk to data security. The SAS System lets you choose which users browse or update specific files. Get the Facts Today. Bring the SAS System together with your data base. For details, call or write today. SAS Institute Inc. Ridge Medical Supplies Inc. CuUinet Software, Inc. Printed in the USA. Tandem Computers, Inc. Digital Equipment Corp.

Verimation is jointly owned by AB Volvo and L. Software Techniques, Inc. VMS systems. SPSS, Inc. Although the acronym-happy software industry rarely takes inspiration from housewares, Silden Software in Encino, Calif. A system that automatically signs off terminals after a preset time lapse during which they have remained idle is called EZoff.

Jim Wisdom can be a tough critic. Tough, but fair. Speaks his mind. Not many people can say that. Which is also nice to hear. The Next Dimension in 4th Generation technology. Bohl, who resigned in April to join Digital Research, Inc. A story in the Sept. Infodata Systems, Inc. One powerful, accessible, responsive computer. When you do that, you get a different kind of computer.

Then, the network the computer. This screen shows what we mean. Other brand or product names are trademarks or registered trademarks of their respective holders.

As you may have guessed, though, this is no ordinary screen. It belongs to the most powerful Sun workstation ever built. In computer-ese, it delivers the performance of 10 MIPS. At a tenth the cost. Merely the latest. On the contrary. All three can coexist on the same network. I What it gives you is a compatible growth path 1 to the most cost-effective and powerful workstations m in the world.

Software support for the Sun Living proof it's no empty box. Only Sun has all the pieces of the Open Systems Network in place. Advanced network services. Across-the-board licensing of innovations and implementations.

It's as though your company has just one computer. One computer with the power of many. And the network is that computer. And a long list of network management services for vendors and customers alike.

Our strategy is paying off. In other words, a network that works. For everyone. Or write Sun Microsystems, Garcia Ave. The proposed addition is designated X3. The X3 committee has also announced a review period through Oct. Unmatched installation and implementation program. Inc Masterpiece. CA-Accounts Poyoble. Software superior by design. Changes during the final editing of X3. The standard facilitates the development and utilization of tape peripherals on computers by providing a common logical interface.

Software is no longer a cottage industry. To be a leader, the drive to be inventive must be backed by substantial resources. The way programmers work. The way computer applications are written and managed.

The way corporate infomiation is managed. And the r way future software systems will evolve. Today, ADR continues to lead the industry.

And will continue to answer the needs of business. But now in greater diversity than ever before. Unlock the potential. The feature is one of several that the small systems utility firm said it hopes will allow it to compete more effectively with the job scheduling packages offered by Computer Associates International, Inc.

Pools systems for scheduling Release 3. And sessions can be saved on the host. Make contact today with Trax for a free trial! TtaX Trax Softworks, Inc. Tymshare Inc. International Business Machines. Inc, IBM. Lcslic P. Marcia Feingold — Cap Gemini America m. The company has sold licenses for the product. Macros can be defined in separate files and included with one-line commands in the procedure source code file. It is said to take the place of more expensive mainframe security risk analyses.

Tata Engineering and Locomotive Co. Access Technology, Inc. SQL is key to taking advantage of future technologies. And ADR will fully support the industry standard. Wliich means choosing a DBMS is now a matter of choosing the system that satisfies your current needs best.

Without the fear of being locked out tomorrow. The future may bring something new, but today, businesses like yours depend on computer-based online solutions built by professional programmers.

Only to find that any advantages are lost to an insurmountable learning curve or are offset by an extremely painful performance penalty. That is, until now. You can even utilize existing Cobol copybooks. You get a system that executes real instructions. From the simplest to the most demanding of programs. Call or write today for a free, no obligation trial and complimentary poster.

Perfect together. Cincom Systems, Inc. Hessinger said that rating is unofficial; the official one will have to come from the Codd and Date Consulting Group when it decides to make it public. Perhaps the danger here is not that we will ignore a new standard so much as allow it to become too confining once users start adhering to it. IBM executives have said that a follow-on machine, code- named Silverlake, should arrive in the second half of [CW, Sept.

Professional, powerful and quick. The only system with everything you need to build corporate applications on DB2. Including static and dynamic SQL functionality, an active dictionary tied to the DB2 catalog and a complete application development environment. Or in other words, everything you need to get the most from your investment in DB2. It provides job log and listing information that the user can customize. Executive Assistant. Regional Sales Manager. Departmental mini using data from PC.

National Sales Manager. IBM PC off mainframe; data uploaded from mini. Corporate Graphics Artist. Created using Editor at graphics workstation. Vice President of Manufacturing. Departmental mini. Financial Manager. A single graphics package can make everybody in your company look good.

Especially you. And file sharing capabilities so data can move freely throughout your company. On a micro, mini or mainframe. All your people learn a single set of commands and menus, no matter where Impressionist is running.

Best of all, data from your host computer can be shared throughout your company. To find out more about the one graphics package for everyone, call Chris Barkley at In Texas and Canada call Call for special introductory price on Micro Impressionist.

Lotus and are registered trademarks of Lotus Development Corporation. This module is integrated with Supertab, the I- Deas finite element modeler. If two users try to simultaneously open the same data set, the product guarantees that all update operations are serialized and protects the overall integrity of the data set.

Enhanced Data Set Integrity operates in a stand-alone or integrated mode. On-Cue generates and submits a batch job request and returns it to the user. A hard copy can be routed to an available printer. Filled-in screens can be saved in a user library, and security for sensitive data is provided. It emulates the deduetive reasoning of human experts and shows how to improve the performance of your system. In fact, it even gives the rationale for its advice.

And can tailor its recommendations to the requirements of your system. It is compatible with other versions of Plantrac. Computerline, P. Box , 52 School St. A version of the Mass word processing software for Digital Equipment Corp. Mass Version 7-A allows the fonts to be printed in outline form or in various shades from black to white, the vendor said.

Users may change typefaces and point sizes anywhere within a document. Microsystems Engineering, Suite , W. Hassell Road, Hoffman Estates, Ill. Other features include more than component library symbols, editing functions and the abiity to create parts from portions of a drawing. The software also allows definition of a pixel array with a color associated with each pixel. Raster data from various sources can be merged. Versatec has also announced Veraplot 9. The software outputs raster data and was designed for VAX and Microvax computers.

Versatec, Walsh Ave. The system, called Jcamms, runs on Wang Laboratories, Inc. VS minicomputers. Broadway, Hicksville, N. Version 1. DEC, Maynard, Mass.

Louis A. Sharing DASD? Want to Improve Performance? System Devel. Facility Info. You can use a telephone. Reply and it digitizes your voice to be replayed later. So now the company computer is just a phone call away. Teltech, 39 Broadway, New York, N. But since we bought the C Supra from C. Itoh Digital Products, I never have a moment to spare. I'm living life in the fast lane.

It manages continuous forms, labels, letterhead and up to 6-part invoices with its rear or bottom feed paper paths. Sound investment The finance department says the Supra is a great investment since C.

Itoh Digital Products, Inc. It prints high volume data processing output, like invoices and spreadsheets, at speeds up to characters per second cps.

And for word processing, the Supra prints sharp, clear, high-speed letter quality at cps. And they were right. Forms expert Our executives are really impressed with the Whether it's high volume spreadsheets and multi-part invoices or letter quality business letters and presentations, the Supra is fast and reliable. MS-DOS-based systems. Software Research, Third St. Francisco, Calif. According to the vendor. Version 2. Updata, Holmdel Road, Holmdel, N. The Tapesaver Utility backs up and restores data by volume or by file.

No system generation is required for installation. The utility can be run by an operator in interactive menu prompt mode or unattended under batch control. And offers software designers a CASE system that works the way they do. A commitment that has made ADR the leader. Up to 16 watch points can also be set. Program statements can be traced as they are executed. Glenstone, Springfield, Mo. The system lets engineers and managers focus their efforts on software development, quality, and productivity, without having to supervise a complex computer facility.

A composite material made of graphite epoxy is ideal for use in space because it is stronger than steel yet lighter than aluminum. Unlike metal, it does not expand from exposure to heat or cold, and its reduced weight translates into lower costs and larger payloads.

For example, saving just one pound in a space vehicle means a reduced launch cost of several thousand dollars or added fuel for longer operations. Until now, however, graphite composites have proved difficult to mold to shapes more complex than a simple cylinder. But research and development by Hughes has opened the way for the fabrication of a variety of new forms, including tubes with integrated end fittings in a one-piece design, support beams, and ring structures up to seven feet in diameter.

Air Force FE dual role fighters. Unlike previous systems requiring software check-out after the completion of hardware, the Hughes Digital Software Integration Station DSIS can test and de-bug software while the hardware is being built, resulting in substantial development cost and schedule savings. It has ten times the software and six times as many test targets as its predecessor, the APG radar. The signal is then relayed to a Japanese ground station north of Tokyo and fed into the local NHK studio.

The daily broadcasts include segments of major US. An ultramodern facility spanning 1. S3, El Segundo, CA Ada is a registered trademark of the U S. Government Ada Joint Program Office. For more information write to: P. Development tools Cadre Technologies, Inc. Cadre Technologies, Richmond St.

Smalltalk DE Version 2. Continued on paged? Postscript has clearly emerged as a standard, and Palo Alto, Calif. The Continued on paged? How do you plan to penetrate that market? Users report dramatic productivity improvements and more. All these and more to improve productivity and produce quality applications. For the most efficient development of either your PC or mainframe programs, call us now. The company also unveiled a Holiday Clipart Library that users can incorporate into holiday correspondence, newsletters and other types of publications, according to a company spokesman.

They are compatible with Adobe Systems, Inc. Data integrity is key for such an application. Another reason for Follet to go with Baler was purely economic. The plan eventually calls for 60 copies of the model to be in place. According to Butler, compiling a spreadsheet with Baler was easy. At up to 1. SCO Xenix has proved to be a reliable operating system. It offers an excellent low-cost opportunity to get back up to speed on the current state of Unix. Xenix vs. Even a little experience with the two systems is enough to show that both will have their place in corporate use.

SCO Xenix is clearly the operating more professional, unified look. All of which means PageLaserl2 can meet the needs of any office worker. So if your business prospers on high volume, get the laser pnnter that does the same.

The PageLaserl2. For more details, call for the name of theTbshiba printer and computer dealer nearest you. Then see how well FhgeLaserl2 performs in your surroundings. Diablo is a reKistend track-mark of Xenix Corporation. Qunie is a ivgistervd trademark of Qume Corporation. LaserJet Plus is a a-gislemd trademark of Hewlett-Bickard. Inc, Infomuition Systems Division system of choice when more traditional, multiuser, multiterminal configurations are desired. Control-C Software, Inc. We also have regional marketing people that are also focused exclusively on the Fortune Why should MIS directors buy Tandy equipment?

What are your goals for selling to MIS in large corporations? Our market share is small — in the few- percent range. We would be very pleased to double that in the next year. I think every new piece of hardware that comes into the market, regardless of the manufacturer, has features that the whole industry reviews and has to determine the importance of for the long term.

Of course, customers themselves have an important vote as well. In fact, VGA is an option on our based machines today. The real significance of that is that all manufacturers now have the ability to bring some real innovations to hardware design as long as the operating environment is compatible with it and the software is compatible with it.

Does it matter? The rumor is that it needs an exceptionally large amount of memory to handle all these extended functions. So, if you believe their literature, it would appear to run on all other machines as well. Anyone who focuses on it is the ultimate victim of fear, uncertainty and doubt. How badly were you harmed by that decision?

We were anything but a hardware clone. But our sales have been very robust. What do you hope to accomplish during the next 10? In the microcomputer area, our No. One of the more interesting things that we did next was our barnstorming campaign in and We also made significant inroads in the education market. We gave free computer-literacy training to , school teachers. The next 10 years will probably be more interesting than the last With all the advances being made in hardware and software, the end user is going to be the big beneficiary.

BASIS is designed to keep pace with your world of information, and, without the constraint of hardware dependence. Fast, efficient information retrieval is possible in even the largest databases. Novice and casual users may retrieve information and generate reports using menus and simplified command statements.

In , the firm shipped 3. Once an IBM-only shop. Saavedra said Wells Fargo was drawn to Tandy because of its ability to provide on-site service. GE makes the switch General Electric Co. And, that makes sense. New files and record fields may be added or changed without reloading data. BASIS is accurate, efficient, and secure. DM is the first relational DBMS with full-text handling capabilities integrated with complete database management facilities. If you need to know who, what, where, when, or why..

Let DPS be your Guide. Digital is and will continue to be the dominant factor! Or call your local sales office. The Powermate includes a processing unit with IM byte of random-access memory, a 1. It can accommodate five 5V4-in. Based on the Intel Corp. CPT, P. Box , Mitchell Road, Minneapolis, Minn. The Acer bit system runs at 16 MHz.

No host changes required. Aspen Research NE. Does the vendor offer a true distributed matrix switch versus an electronic patch panel? Are there any documented problems with the control software, resulting in inability to control the switch? Can references be contacted, with sites visited? Is performance monitoring integrated in the distributed matrix switch?

I Does the switch provide V. And, we know that no competitor within our markets can match the service and support we offer. Prove it to yourself. The Ivy portables are said to run the Unix operating system. The Model 40 features a 1. The Model 80 features an 80M-byte hard drive, and the Model features a M-byte hard drive instead of the 40M-byte drive. Ivy Microcomputer, 15 Ararat St. Software applications packages An entry-level computer-aided drafting and design program called Cub has been announced by Innovative Computer Aided Technology, Inc.

Macintosh has been introduced. Users can select record sizes of 1,, 2, or 4, char. Vectras and compatibles. Box , Cumberland Ave. Lafayette, Ind. Response, an integrated contingency planning system for data processing and corporate disaster recovery planning, has been announced by Mosaic Computer Security, Inc. Mosaic, Massachusetts Ave. You can correct or bypass the error right away —without wading through transaction dumps—and then resume testing without losing valuable time.

Best of all, InterTest's programmer-friendly menu screens and comprehensive Help Facility enable you to become more productive right away. It lets you catch the bugs that plague your programs. For more information, or to find out about our no obligation 30 day trial program, please write or call On-Line Software today.

On-Line Software International, Inc. Fully sealed. Runs ceel. Fits under an airplane seat. And cemes 4 te a box. It s one of our direct access storage devices DASD disk enclosures, and it delivers improved reliability, improved availability and greater compactness.

This is why these disks can be sealed inside their enclosures And it s why we re able to service our DASDs fast.. It all adds up to greater productivity. For specs on our full line, call your local Amdahl representative. The Hobbs Group, P. Box , S. Techpro, P. Box , Springfield, Va.

Bridgeware operates as a stand-alone application. MS-DOS 2. Other features include a rewritten source-entry utility and an 8-million-record limit. California Software, N. A code-generating graphics editor called Drawbridge has been introduced by Courseware Applications, Inc. Drawbridge automatically generates the source code required to create graphics displays.

Graphics objects available include arcs, boxes, circles, lines and polygons. They may be in color and can be either outlined or painted. A built-in text editor allows the addition of text to graphics displays. It automates new or modified application testing, from simple program tests to the most complicated stress testing. The automated logging function permanently stores the screen dialogues on a file.

You can then browse and customize your test stream dialogues with a variety of powerful on-line edit and utility functions. VERIFY is then ready to retest any portion of your system, giving you the flexibility to control the application mix, input values and arrival rate of the transactions to be re-executed on CICS.

Through an on-line menu display, you can see the exact differences VERIFY discovers during its interactive comparison. And respond immediately with two full menus of mismatch processing options. It helps you get it right the first time. The V 2 -in. Emerald Systems, Mo- rena Blvd. Nth Group, P. Box , West Hills, Calif. Information Storage, Inc. Features include self-loading and self-threading.

M4 Data, Building 14, N. A series of internal hard disk drives for Apple Computer, Inc. Macintosh computers has been announced by the Rodime, Inc. Peripheral System Division. Both offer average seek times of 28 msec, and both have embedded SCSI controllers. Rodime, Suite , Chagrin Blvd. You can take the Macintosh SE for a test drive. Or experience the blazing speed of the Macintosh H. Based on the processor, the newest Macintosh has color for vivid graphics, and open architecture for maximum expandability of memory to handle the biggest jobs.

Most importantly, youll find out about the new connection between IBM and Apple! About DOS compatibility cards and the new option of emulation. Youll even learn how Macintosh talks with IBM mainframes.

For our Macintosh Week event schedule, contact your local Businessland Center. To find the one nearest you, call Macintosh is a trademark of McIntosh Laboratory, Inc. Businessland is an authorized Apple dealer. Text editing is done on the composed page in a what-you-see-is- what-you-get format. Canon U. A in. The monitor has a 0. Tatung, El Presidio St. The device can scan both halftone photographs and line-art drawings in one pass.

Interfacing the Apple Computer, Inc. Microtek Labs, S. Western Ave. Three models are available. All feature two full-length, eight-bit IBM Personal Computer slots, two plug-in expansion adapters, K bytes of random-access I memory, four asynchronous serial shar- j ing ports, one serial printer port and one parallel pinter port. Model 2, with a 1. Page Reader supports the formats of such word processing programs as Micro- pro International Corp. Page Reader has a built-in sheet feeder that enables it to read stacks of up to five typewritten pages.

While the scanner is operating, users can continue to use the personal computer for other tasks. Saba Technologies, S. Gemini Drive, Beaverton, Ore. Cornerstone, A E. Tasman Drive, Sanjose, Calif. Board-level devices General Computer Corp. It automatically detects and repairs system abends and loops on-line. And since diagnostic data is available on-line or in a complete, concise report, you reduce the need to wade through large portions of lengthy system dumps.

Get the only CICS stabilizer around. Because PowerHouse supports these vendors' relational databases as well as their dominant file systems, many of the problems associated with adopting a relational DBMS are solved.

No matter which hardware or databases you use, you're guaranteed integration, compatibility and performance, and 'production' development power.

All this, on top of improved productivity. Integate new applications with existing data New applications built in a third party DBMS won't necessarily integrate with your existing data. That means you're not locked-in to a proprietary DBMS and locked-out' of your existing data. You enjoy the combination of a fast-execution language and databases optimized by your computer manufacturer. And wherever they take their hardware and software — your applications and data will go, too.

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