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Showing 1 to 20 of 35 for “"Geochemical study"”.
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MULTISCALE GEOCHEMICAL STUDY OF THE CORNO ALTO COMPLEX (ADAMELLO BATHOLITH)
… and its secular evolution. This study focuses on the Corno Alto complex, the oldest intrusion of the Adamello batholith and also the oldest known intrusive complex of the whole Periadriatic magmatism. The Corno Alto intrusion is crucial to shed light on the tectono-magmatic …
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A geochemical study of diamonds from Cullinan diamond mine, South Africa
… the Bushveld Igneous Complex (2.05 Ga). This study explores the geochemistry of a suite of one hundred selected diamonds and their associated mineral inclusions. The majority of the diamonds described here are peridotitic (94%) and the remainder are eclogitic. The peridotic inclusions may be …
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Geochemical study of soil salinity in a toposequence near Riebeeck West, South Africa
A geochemical investigation of salt distribution in soils of the semi-arid of Western Cape, South Africa, was carried out following a pilot study which revealed widespread soil salinity in the Berg River catchment. The present study looks at the distribution of the salts along a toposequence in a …
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Geochemical study on reservoir and source rock asphaltenes and their significance for hydrocarbon generation
Erdölasphaltene, Muttergesteinsasphaltene und Muttergesteinskerogene wurden mittels verschiedener analytischer Pyrolysetechniken bezüglich ihres Kohlenwasserstoff-genesepotentials untersucht. Besonderes Interesse wurde hierbei der kompositionellen Zusammensetzung der generierten Kohlenwasserstoffe …
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A geochemical study of a layered portion of the Horoman peridotite, Southern Hokkaido, Japan
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmosphere and Planetary Sciences, 1987.
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Geodynamic evolution of the Horoman peridotite, Japan : geochemical study of lithospheric and asthenospheric processes
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1996.
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A geochemical study of metasomatised peridotite and marid nodules from the Kimberley pipes, South Africa
A comprehensive study has been made of a large collection of metasomatised peridotite, and MARIO (Mica-Amphibole-ButileIlmenite-Qiopside) xenoliths from the Kimberley pipes, with the aim of obtaining an improved understanding of enrichment processes operating in the sub-continental lithospheric …
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Megacryst suite from the Salpeterkop carbonatite complex, Sutherland, Northern Cape, South Africa: an in-depth geochemical study
Presented here are major and trace element, stable (oxygen and hydrogen) and radiogenic (Sr-Nd-Pb) isotope analyses for a Cr-poor megacryst suite from the Salpeterkop complex, South Africa. The clinopyroxene, amphibole, phlogopite and ilmenite megacrysts all appear to be cogenetic, and based on …
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Petrological and geochemical study of spilites and associated dike rocks from the Virgin Island core (Caribbean Island arc)
… at St. John, U. S. Virgin Islands. The present study is confined to the upper 1180 feet and comprises a cummulative total of 950 feet of albitized mafic extrusive rocks (spilite). This portion of the core is also intruded by four dikes: two amphibole porphyryes (129-13h and 732-7&2 feet): an …
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A geochemical study of diamonds, diamond inclusion minerals and other mantle minerals from the Klipspringer kimberlites, South Africa
… have been dated at 148+-4 Ma and the current study presents the geochemical characteristics of their diamonds, diamond inclusion and mantle macrocrysts/bimineralic nodules. The Klipspringer lithosphere is dominated by eclogite and Iherzolite with harzburgite and dunite present to a lesser …
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A geochemical study of neoproterozoic palaeo-evaporites and their possible role in metallogenesis in the Damara Belt of Namibia
… fluids and their source evaporites, a study of former evaporites in the Duruchaus Formation in the Southern Marginal Zone (SMZ) of the Damara Belt was carried out. The lithological units that make up the evaporite sequence within the Duruchaus Formation were mapped and sampled, along …
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A metamorphic and geochemical study of mafic rocks across the Pencksökket-Jutulstraumen Discontinuity, western Dronning Maud Land, East Antarctica
… In conjunction with a recent geochronological study on the eastern Maud Belt, this study suggests that the inferred sub-glacial boundary between the Grunehogna Craton and the Maud Belt, known as the Pencksökket-Jutulstraumen Discontinuity, may represent a major thrust that developed during …
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A field, petrologic, and geochemical study of the Callahan Lava Flow, a basaltic andesite for Medicine Lake Shield Volcano, California
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric and Planetary Sciences, 1985.
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A pertographic and geochemical study of selected peridotitic and pyroxenitic xenoliths from the three kimberlite localities in the Lac de Gras region, Northwest Territories, Canada
… Canada were selected for inclusion in this study. The three kimberlites are situated within a 40 km radius of one another on the BHP property, and all are diamond-bearing. The Misery kimberlite is presently being mined, and the Pigeon kimberlite is part of · the future BHP-DiaMdt Ekati …
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ΓΕΩΧΗΜΕΙΑ ΠΑΡΑΚΤΙΩΝ ΙΖΗΜΑΤΩΝ (ΠΕΡΙΟΧΕΣ ΙΘΑΚΗΣ-ΚΕΦΑΛΛΗΝΙΑΣ-ΑΣΤΑΚΟΥ)
… AND C) THE FINE SILT AND CLAY BY SUSPENSION. THE GEOCHEMICAL STUDY SHOWED THE SOURCE OF TRACE METALS AND THEIR ASSOCIATION WITH THE MAJOR CHEMICAL PHASES SUCH AS CLAYS DETRITAL MINERALS, ORGANIC MATTER AND FE-MN OXIDES AND HYDROXIDES. FOR THE CLASSIFICATION OF HEAVY METAL LEVELS IN SURFACE …
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The geochemistry of a suite of eclogite xenoliths from the Rietfontein Kimberlite, South Africa
… eclogite and a suite of megacryst minerals. This study focuses on a suite of eclogite xenoliths, which were subject to a detailed petrographical and geochemical study, aimed at their characterisation and comparison to eclogites from on-craton and other off-craton localities. Garnet, clinopyroxene, …
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