Results 11 to 20 of about 2,734 (234)
Age and isotopic fingerprints of some plutonic rocks in the Wiborg rapakivi granite batholith with special reference to the dark wiborgite of the Ristisaari Island [PDF]
Bulletin of the Geological Society of Finland, 2014 The mid-Proterozoic, locus classicus Wiborg rapakivi granite batholith of southeastern Finland and adjacent Russia comprises a varying, bimodal (silicic-basic) sequence of plutonic, subvolcanic, and volcanic rocks. At the current level of erosion silicic
O.T. Rämö +5 more
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GRANITES OF THE NORTHERN TIMAN – PROBABLE INDICATORS OF NEOPROTEROZOIC STAGES OF RODINIA BREAKUP
Геодинамика и тектонофизика, 2020 The Northern Timan is an uplifted block of Late Precambrian basement of the Timan Ridge, where Neoproterozoic sedimentary-metamorphic rocks of the Barmin Group are cut by intrusive rocks of different composition and all unconformably overlain by Lower ...
V. L. Andreichev +5 more
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Temporal and Hf isotope geochemical evolution of southern Finnish Lapland from 2.77 Ga to 1.76 Ga [PDF]
Bulletin of the Geological Society of Finland, 2012 The southern Finnish Lapland area in the central part of the Fennoscandian shield is a geologically complex zone comprising several Archean blocks and Paleoproterozoic supracrustal belts all of which are intruded by voluminous Paleoproterozoic granites ...
L.S. Lauri +3 more
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Revista Mexicana de Ciencias Geológicas, 2021 The origin of silicic rocks in the Michoacán-Guanajuato volcanic field (MGVF) has been understudied since the volcanic field attracted the attention of researchers. Using geochemical, petrological and structural data from the literature, here we propose
Giovanni Sosa-Ceballos +6 more
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Infra-supra structure relations of a microcline-granite dome in the Somero area, Svecofennides, SW Finland [PDF]
Bulletin of the Geological Society of Finland, 1989 Internal structure and deformational history of two granite domains with markedly distinct tectono-metamorphic evolutions occur in the Somero area, SW Finland.
H. Stel +4 more
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GEOCHEMISTRY OF TRACE ELEMENTS IN ROCK-FORMING MINERALS OF GNEISSES AND GRANITES OF THE MURZINKA GRANITE AREA, CENTRAL URALS [PDF]
Минералогия, 2020 The Murzinka granite area (Central Urals), which combines Murzinka granite pluton and underlying rocks of the Murzinka-Adui metamorphic complex, exhibits an evident WE-trending geochemical zonation of magmatism with increasing of Rb, Li, Nb and Ta ...
S.V. Pribavkin +2 more
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Geochemistry, Geophysics, Geosystems, 2023 The origins of Cenozoic granites in the Himalaya are key to understanding the evolution of the Himalayan orogen. However, it is unclear whether these granites represent primary melts, and the nature of their magma source is controversial.
Jing‐Jing Fan +13 more
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Литосфера, 2018 Murzinka massif is a sheet-like interformational body steeply deeping to the East with length about 6 km. Proterozoic metamorphic rocks of the predominantly granulite facies ( P = 5-6 kbar, T = 750-800°C) occur at the base of massif, and volcanic ...
German B. Fershtater +1 more
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Materiales de Construccion, 2006 The suitability of granite conservation treatments (consolidation and/or water-repellency) wide/y used to protect heritage structures was evaluated on the basis of the changes occurring in the intrinsic characteristics of the stone (imbibition capacity ...
A. C. Íñigo +2 more
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Geosciences, 2020 Late-Variscan granitoid rocks of trondhjemitic and granitic composition, intruded in migmatitic paragneisses in the north-eastern Peloritani Mountains (southern Italy) at ~310 Ma and ~300 Ma, respectively, exhibit a range of deformation microstructures ...
Eugenio Fazio +3 more
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