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Browsing Геология России by Title
Now showing items 6100-6119 of 39126
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(PANGAEA, 2012-10-10)
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(2003)The Verkhnyaya Unda granitoid batholith is the largest pluton of the Later Paleozoic Unda complex prevailing among the granitoids of Eastern Transbaikalia. The geology and geochemistry of this batholith is examined in ...
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(2014)We report on the structure, geochemistry, Re–Os isotopes and relative abundances of highly siderophile elements (HSEs) of the Paleozoic peridotite–basalt occurrences in the Eastern Pontide belt of northeastern Turkey. These ...
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(Федеральное государственное бюджетное учреждение науки Институт земной коры Сибирского отделения Российской академии наук, 2017)
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(1997)Lead isotope data from geologically mixed suites of Archaean gneisses often yield secondary isochrons that have statistically better fits than might be expected from the geological constraints on the range of samples used. ...
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(1989)The theoretical possibility of using stable isotopes for geochronological purposes, based on the kinetics of isotope exchange reactions, was demonstrated in a study of the distributions of the isotopes of light elements ...
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(2004)The available geochronological data indicate three evolutionary stages of alkaline-mafic magmatism in Kuznetsk Alatau (Cambrian-Ordovician, Early-Late Silurian, and Silurian-Devonian boundaries). These data support the ...
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(1994)U–Pb zircon/baddeleyite ages obtained for the Korosten anorthosite-rapakivi granite complex, Ukrainian shield, suggest that different magmatic phases were emplaced during a period of ca. 30 million years as a series of ...
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(2001)U–Th–Pb analyses of zircons from six granites and one metasediment collected in the accretionary Central belt of Taimyr, Arctic Siberia, demonstrate that Neoproterozoic (c. 900 Ma) granites intrude late Mesoproterozoic/early ...
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(1990)The deposition of apatite in the past was preceded and promoted by numerous factors, chief among which were tectonic factors (endogenous conditions) and igneous and metamorphic factors. Thus, on tectonically stable structures, ...
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(2002)A problem of modifying the International stratigraphic scale is discussed, and the present state of the Phanerozoic geochronological scale is analyzed. It is suggested that both scales reflect a combined response of the ...
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(2010)U/Pb dating, REE geochemistry and Lu/Hf isotopic studies utilizing LA-ICPMS on detrital zircon suites from Neoproterozoic siliciclastic rocks fromthe northeast periphery of the East European Craton (sandstones of Djejim ...
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(2004)A subject of discussion is age of rocks in Mesozoic volcano-plutonic belts of the epi-Paleozoic Amurian superterrane. Mesozoic volcanic and intrusive complexes of the northeastern Greater Khingan and western Umlekan-Ogodzha ...
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(PANGAEA, 2011-09-14)
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GEOCHRONOLOGY AND FORMATION SUBDIVISIONS OF THE LOWER PRECAMBRIAN IN THE NORTHWESTERN LADOGA REGION (1996)A brief geological review of the northwestern Ladoga region and systematics of the Lower Precambrian subdivisions in this territory are presented. The respective stratigraphic scale and supplementary geologic scheme include ...
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(2021)Granitoid magmatism is widespread in the Mongolian Altai, and it provides critical information to understand the crustal formation, evolution, and growth. This study reports newly investigated petrography, whole–rock ...
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(2000)Simultaneous in-situ analysis of U-Pb age and 26 trace elements for single-grain zircon using the LAM-ICPMS technique was successfully achieved in this study. The precision of analysis is 1 to 3 % for 207Pb/206Pb isotopic ...
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(Федеральное государственное бюджетное учреждение науки Институт земной коры Сибирского отделения Российской академии наук, 2017)
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(2013)It is well documented that the Khondalite Belt of the North China Craton formed by the collision of the Yinshan and Ordos Blocks during ca. 1.95 Ga, but the onset of the post-collisional exhumation stage has not been well ...
Now showing items 6100-6119 of 39126