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Showing 1 to 20 of 100 for “"Peridotite"”.
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Petrology and petrogenesis of the Ronda high-temperature peridotite intrusion, southern Spain.
Thesis. 1977. Ph.D.--Massachusetts Institute of Technology. Dept. of Earth and Planetary Sciences.
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Evolution of enriched mantle from derivative basalt, peridotite and diamond inclusion geochemistry
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric and Planetary Sciences, 1984.
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Determining timescales of natural carbonation of peridotite in the Samail Ophiolite, Sultanate of Oman
… of carbonate alteration products in mantle peridotite is important in order to better understand the role of this potentially important sink in the global carbon cycle and also to evaluate the feasibility of using artificially-enhanced, in situ formation of carbonates in peridotite to …
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The partial molar volume of carbon dioxide in peridotite partial melt at high pressure
The partial molar volume of CO2 (VCO2) in silicate melt was determined for a komatiite composition using high pressure sink/float experiments in a multi-anvil press. The density of the experimental melt at pressure was determined by observing sinking and floating of pure forsterite (Fo100) and 90% …
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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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Determining timescales of natural carbonation of peridotite in the Samail Ophiolite, Sultanate of Oman
… of carbonate alteration products in mantle peridotite is important in order to better understand the role of this potentially important sink in the global carbon cycle and also to evaluate the feasibility of using artificially-enhanced, in situ formation of carbonates in peridotite to …
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Documenting multiple metasomatic events within the Finero phlogopite peridotite using chlorine isotopes, Ivrea zone, Italy
Depleted mantle peridotites from the Finero body in the Ivrea Zone were infiltrated by metasomatizing melts/fluids prior to their incorporation into the lower continental crust. Metasomatism resulted in pervasive development of phlogopite and amphibole throughout much of the body, as well as the …
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A geochemical study of metasomatised peridotite and marid nodules from the Kimberley pipes, South Africa
… 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 mantle. The metasomatised …
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Thermobarometry and geochemistry of peridotite xenoliths from the southwestern margin of the Kaapvaal craton, South Africa
… both thermally and chemically, between peridotite xenoliths exhumed from Archean, and post-Archean terranes. Studies of the thermal structure of the lithosphere, in combination with surface heat flow data, suggest that thermal gradients beneath cratonic regions (Archean blocks which …
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Some aspects of the mineral chemistry of the peridotite xenolith suite from the Bultfontein Diamond Mine, Kimberley, South Africa
… garnet; garnet olivine websterites and polymict peridotites. Many of the peridotites contain phlogopite and/or potassic-richterite which are interpreted as metasomatic minerals together with ilmenite, rutile, sulphides, and rare zircon. The variations in texture, mineral chemistry, equilibration …
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A comparison of the Nickel and the conventional geothermometers with respect to the Jagersfontein and the Matsoku kimberlite peridotite xenolits
The accuracy of the experimental (Canil, 1994; T-Canil) and the empirical (Ryan et al., 1996; T-Ryan) calibrations of the Ni geothermometer has been evaluated on two suites of geochemically and geothermobarometrically well characterised mantle xenoliths from Matsoku and Jagersfontein by comparison …
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The geochemistry of Cenozoic basalts and peridotite xenoliths from Hannuoba region, eastern China : implication for their petrogenesis and subcontinental mantle heterogeneity
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1989.
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Geology, mineralogy and geochemistry of the Cerro Matoso nickeliferous laterite, Córdoba, Colombia
… of slightly serpentinized harzburgite. The peridotite body is flanked by ferruginous sandy sediments with interbedded coal beds of the Cienaga de Oro Formation (early Oligocene-early Miocene) and Recent alluvial gravels and sands. The harzburgite consists predominantly of olivine with lesser …
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Geochemical properties of the Beni Bousera (N. Morocco) peridotites : a field and laboratory approach to understanding melt infiltration and extraction in an orogenic peridotite massif
… previously interpreted, and that "secondary" peridotites and dunites were formed by different petrogenic processes than the remainder of the massif. Trends in the CaO-MgO-Al 203-SiO 2 system and trace element patterns suggest partial melting of the peridotite played a significant role in the …
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Experimentally generated partition coefficients for the first-row transition elements during eclogite partial melting at three gigapascals
… mantle is primarily composed of a rock called peridotite. Subduction results in the reinjection of basaltic crust into the mantle, which is metamorphosed into a rock called eclogite. The extent of lithological heterogeneity has implications for the rate of convective stirring and chemical …
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Petrological and geochemical studies of an abyssal periodotite from the Atlantis II fracture zone
… the petrology and geochemistry of an abyssal peridotite dredged from the Atlantis II Fracture Zone in the southwestern Indian Ocean Ridge. Texturally, this sample is a serpentinized peridotite with a crosscutting coarse-grained clinopyroxenite vein. One of the alteration veinlets contains …
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Kinetic processes of mantle minerals
… transformation boundary from spinel to garnet peridotite facies at subsolidus conditions, because the presence of garnet in melting residues has significant influence to the conclusion drawn from geochemical/geophysical observations. Using an approach that monitors the rate of reaction …
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Kinetic processes of mantle minerals
… transformation boundary from spinel to garnet peridotite facies at subsolidus conditions, because the presence of garnet in melting residues has significant influence to the conclusion drawn from geochemical/geophysical observations. Using an approach that monitors the rate of reaction …
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Petrogenetic study of the Porcupine Lake mafic intrusive complex, Trinity terrane, northern California
… intrusive contacts with adjacent Ordovician peridotite, and consists of basal layered peridotite, cumulate clinopyroxenite, and isotropic gabbro. East-west trending mafic-to-felsic aphanitic dikes intrude the plutonic rocks, with high dike concentrations (>80%) in the southern portion of the …
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