Литосфера, 2017 Mineral deposits in the Neoarchean greenstone belts in the Fennoscandian Shield, especially in its eastern (Russian) part, are not as numerous as in Archean belts of Canada, Australia, or Southern Africa.
A. Kalinin Arkady +4 more
doaj +1 more source
Nature and origin of fluids in granulite facies metamorphism [PDF]
The various models for the nature and origin of fluids in granulite facies metamorphism were summarized. Field and petrologic evidence exists for both fluid-absent and fluid-present deep crustal metamorphism.
Newton, R. C.
core +1 more source
Metasomatic alteration of dolerite in the Proterozoic sediments of north-eastern Disko Bugt
Rapport Grønlands Geologiske Undersøgelse, 1991 Alteration of a dolerite sheet along quartz-carbonate veins resulted in profound changes in its chemical composition. Per 1000 kg of the original dolerite 135 kg of volatiles, 38 kg of Na2O and 23 kg of CaO were added, and 76 kg of FeO* (total iron expressed as FeO) and 8 kg of K2O were removed.
openaire +2 more sources
International Journal of Applied Earth Observations and GeoinformationThis study presents an innovative solution for detecting complex geological formations, particularly in areas where field surveys are difficult or impossible.
Huy Hoa Huynh +4 more
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CHARACTERISTICS OF THE UNIQUE Y-HREE-F-RICH PEGMATITE SYSTEM REVEALED BY ZIRCON GEOCHEMISTRY: A CASE STUDY FROM MT. PLOSKAYA AMAZONITE DEPOSIT, KOLA PENINSULA [PDF]
МинералогияAn amazonite-quartz-albite pegmatite body of the Mt. Ploskaya intrudes a metavolcanic complex of the Keivy Terrane (Kola Peninsula) and is unique in its diversity and an assemblage of ore and accessory Y-Yb-Ta-Nb-Be-Pb-F mineralization.
D.R. Zozulya +3 more
doaj +1 more source
Metasomatism in the Ultrahigh-pressure Svartberget Garnet-peridotite (Western Gneiss Region, Norway): Implications for the Transport of Crust-derived Fluids within the Mantle [PDF]
, 2017 Garnet-peridotites often contain veins or layers of pyroxenite and eclogite of uncertain origin. We investigate the Svartberget garnet-peridotite from the northernmost ultrahigh-pressure domain in the Western Gneiss Region (WGR) in Norway and show that ...
Austrheim, H. +5 more
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Multitemporal and geobotanical approach in the remote detection of Greisenization areas in the Serra da Pedra Branca Granite, Goias State, Brazil [PDF]
A multiseasonal analysis of LANDSAT multispectral images in CCT format permitted the mapping of lithologic facies in the Pedra Branca Granite, using geobotanical associations, which occur in the form of variations in the density of the cerrado vegetation,
Filho, R. A., Parada, N. D. J.
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Discovery of a New Cl-Rich Silicate Mineral, Ca_(12)(Al_2Mg_3Si_7)O_(32)Cl_6: An Alteration Phase in Allende [PDF]
, 2014 During a nanomineralogy investigation of the Allende CV3 carbonaceous chondrite, a new silicate mineral, Ca_(12)(Al_4Mg_3Si_7)O_(32)Cl_6 with the I 4 3d wadalite structure, was identified in the Type B1 Ca-Al-rich inclusion (CAI) Egg-3.
Krot, Alexander N., Ma, Chi
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The common origin and alteration history of the hypabyssal and volcanic phases of the Wadi Tarr albitite complex, southern Sinai, Egypt [PDF]
, 2019 New data and interpretations are presented for the igneous albitites of the Wadi Tarr area, southern Sinai, Egypt. The albitite masses are isolated in outcrop from any granitic intrusions and have intrusive contacts against the country rocks without any ...
Al-Kahtany, Khaled M. +3 more
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Discovery of a New Garnet Mineral, Ca_3Ti_2(SiAl_2)O_(12): An Alteration Phase in Allende [PDF]
, 2013 During a nanomineralogy investigation of the Allende CV3 carbonaceous chondrite, a new Ti-rich silicate, Ca_3Ti_2(SiAl_2)O_(12) with the Ia-3d garnet structure, was identified in the Type B1 Ca,Al-rich inclusion (CAI) Egg-3.
Krot, Alexander N., Ma, Chi
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