Results 121 to 130 of about 755 (173)
, 2012 Коэффициент эффективной (матричной) диффузии и эффективная пористость являются ключевыми параметрами для описания диффузионного массопереноса загрязняющих компонентов в низкопроницаемой кристаллической породе.
Олександрова, Н.В. +3 more
core
, 2012 The purpose of this study was to apply novel isotopic methods to shed light on the petrogenesis and magmatic evolution of Proterozoic massif-type anorthosites and related rapakivi granites in southern Finland and northern Brazil.
Heinonen, Aku
core
The origin of rapakivi texture by sub-isothermal decompression
Precambrian Research, 1999 Abstract The rapakivi texture (plagioclase-mantled K-feldspar ovoids, rounded quartz megacrysts and euhedral plagioclase megacrysts in a more fine-grained granitic matrix) has been studied in five Proterozoic (1.64–1.55 Ga) anorogenic rapakivi granite batholiths in the Fennoscandian Shield with emphasis on mineral stability and inherited cores.
Shebanov, AD,, Eklund, O,
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Rapakivi granites from Brazil and adjacent areas
Precambrian Research, 1999Abstract A review of the rapakivi magmatism in Brazil and adjacent areas demonstrates that the dominantly felsic anorogenic complexes of the Amazonian craton can be considered as rapakivi suites. They are found in almost all provinces of the craton and are concentrated in the timespan covering the end of the Palaeoproterozoic until the beginning of ...
R Dall'Agnol
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Lithos, 2023 Rapakivi-type granites not only document magmatic processes but also archive subsolidus interactions between granitic rock and fluid, and thereby provide crucial information about fluid infiltration in the Earth's crust.
Xuan-Ce Wang +2 more
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Nature, 1969
RAPAKIVI texture has rarely been reported in volcanic rocks1. A notable example of a volcanic body with rapakivi texture is a Miocene rhyolite2 that has an exposure area of about 1/16 square mile near California State Highway 178 on the east flank of Rhodes Hill 1/4 mile west of the eastern boundary of Death Valley National Monument.
A. L. EHRREICH, R. E. WINCHELL
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RAPAKIVI texture has rarely been reported in volcanic rocks1. A notable example of a volcanic body with rapakivi texture is a Miocene rhyolite2 that has an exposure area of about 1/16 square mile near California State Highway 178 on the east flank of Rhodes Hill 1/4 mile west of the eastern boundary of Death Valley National Monument.
A. L. EHRREICH, R. E. WINCHELL
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The Origin of Rapakivi Texture
Journal of Petrology, 199445124
Dempster, TJ, Jenkin, GRT, Rogers, G
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Bacterial weathering of rapakivi granite
Geomicrobiology Journal, 1981Rapakivi granite samples were incubated with Pseudomonas aeruginosa culture solutions in order to elucidate the possible role of bacteria in rapakivi (crumbling stone) disintegration. SEM micrographs showed micromorphological alterations on the incubated rapakivi surface at 21 to 23°C for 20 days.
Antti Vuorinen +3 more
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Rapakivi granite, anorthosite and charnockitic plutonism
Nature, 1978THE close association of massive anorthosite and charnockitic granitic rocks is well documented1. Rare earth element (REE) investigations2–4 have indicated that the massive charnockite (mangerite) associated with anorthosite is not comagmatic with it but represents a distinct magma fraction.
F. H. HUBBARD, J. E. WHITLEY
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The Soca intrusion: a rapakivi granite of Uruguay
Journal of South American Earth Sciences, 1998Abstract The Soca granite, emplaced in the Rio de la Plata Craton, is located 65 km east of Montevideo. It is a homogeneous porphyritic leucogranite, with almost 75 km 2 of exposed area. Petrographically, the Soca granite is characterized by the occurrence of quartz, plagioclase and alkaline feldspar in two generations, ferrous pyroxene, mica ...
P. Oyhantçabal +3 more
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