Results 11 to 20 of about 946 (178)
TO THE ONTOGENESIS OF AESCHYNITE IN FELDSPAR VEIN NO. 31 OF THE VISHNEVYE GORY, SOUTH URALS [PDF]
Минералогия, 2022 Small grains of accessory aeschynite in feldspar vein no. 31 of Vishnevye Mountains (South Urals) co-crystallize with late growth zones of feldspar crystals, as well as with ilmenite, titanomagnetite, muscovite, zircon, monazite, thorite, rutile ...
V.A. Popov, I.A. Blinov, V.I. Popova
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Journal of Economic Geology, 2023 Macroscopic, microscopic and geochemical studies carried out on albite-bearing metasomatites and metasomatic rhyolites hosting the magnetite-apatite deposit of Chogharat indicate the presence of three generations of albite with different concentrations ...
Kiamars Hosseini +2 more
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Geochemical Aspects of Na-Metasomatism in Sargaz Granitic Intrusion (South of Kerman Province, Iran) [PDF]
Journal of Sciences, Islamic Republic of Iran, 2012 The Sargaz granitic intrusion has been emplaced in Sargaz ophiolitic suite, south-east of Sanandaj-Sirjan metamorphic zone, south of Kerman province.
H. Ahmadipour
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ONTOGENETIC APPROACH TO THE METASOMATISM THEORY [PDF]
Минералогия, 2016 Metasomatism is a phenomenon of substitution of some minerals by other minerals under simultaneous dissolution of early minerals and crystallization of late minerals.
V.A. Popov
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Geochemistry, Geophysics, Geosystems, 2023 Talc‐rich rocks are common in exhumed subduction zone terranes and may explain geophysical observations of the subduction zone interface, particularly beneath Guerrero, Mexico, where the Cocos plate subducts horizontally beneath North America and ...
P. C. Lindquist +4 more
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Mechanisms of metasomatic reactions [PDF]
Mineralogy and Petrology, 2009 Fluid-aided mass transfer and subsequent mineralre-equilibrationarethetwodefiningfeaturesofmetasomatismand must be present in order for metamorphism to occur.Taking into account geological time scales, the amount offluidrequiredneednotbegreat(considerablylessthan0.01%of the total volume) nor even in continuous flow but the fluidmust be chemically ...
Harlov, D., Marschall, H.
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Geochemistry, Geophysics, Geosystems, 2021 Fluid release from subducting oceanic lithosphere is a key process for subduction zone geodynamics, from controlling arc volcanism to seismicity and tectonic exhumation.
Francesca Piccoli +4 more
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Geochemistry, Geophysics, Geosystems, 2023 Meter‐ to hectometer‐size horizons of carbonate‐bearing talcschists are found along or near the contacts between the different Liguro‐Piemont subduction slices.
Clément Herviou, Guillaume Bonnet
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AGU Advances, 2023 Mid‐lithosphere discontinuities are seismic interfaces likely located within the lithospheric mantle of stable cratons, which typically represent velocities decreasing with depth.
Tianze Liu, Emily J. Chin, Peter Shearer
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Oceanic Slab Melting and Mantle Metasomatism [PDF]
Science Progress, 2001 Modern plate tectonic brings down oceanic crust along subduction zones where it either dehydrates or melts. Those hydrous fluids or melts migrate into the overlying mantle wedge trigerring its melting which produces arc magmas and thus additional continental crust. Nowadays, melting seems to be restricted to cases of young (<50 Ma) subducted plates.
Scaillet, Bruno, Prouteau, Gaëlle
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