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Now showing items 16012-16031 of 37383
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(Федеральное государственное бюджетное образовательное учреждение высшего образования «Московский государственный университет им. М. В. Ломоносова», 2018)Приводятся первые U-Pb изотопные данные о возрасте детритовых цирконов из метатерригенных пород румяничной свиты барминской серии, представляющей собой видимое основание докембрийского разреза Северного Тимана. U-Pb ...
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(1997)U-Pb dating of zircons from the reference granitoid complexes showed that principal thrusts in the northern flank of the junction zone between the Olekma granite-greenstone and Aldan granulite-gneiss terranes of the Aldan ...
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(2005)We have undertaken petrologic and SHRIMP U-Th-Pb isotopic studies on zircons from basaltic eucrites (Yamato [Y]-75011, Y-792510, Asuka [A]-881388, A-881467 and Padvarninkai) with different thermal and shock histories. ...
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(PANGAEA, 2012-10-09)Reconstruction of the geologic history of the Yenisey Ridge, which developed as an accretionary collision orogen on the western margin of the Siberian craton is essential to understanding the evolution of mobile belts ...
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(1999)The Palaeozoic Uralian orogen formed by accretion of island arcs and microcontinents along the eastern margin of the East European platform. In the middle Urals, a promontory of the East European platform, the Ufaley Complex ...
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(2001)The bedrock of the Sodankylä schist area consists mainly of Paleoproterozoic volcanic and sedimentary rocks penetrated by mafic and felsic intrusives. This paper reports c. 200 conventional U-Pb analyses mainly on zircon. ...
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(1998)Thirty-one detrital zircons from the mid–late Riphean Mayamkan Formation sandstone (Uy Group) of the Sette–Daban fold belt, southeast Siberia yielded SHRIMP 207Pb/206Pb ages ranging between 1500 and 1050 Ma. Other grains ...
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(Федеральное государственное бюджетное учреждение науки Институт земной коры Сибирского отделения Российской академии наук, 2017)Оценена возможность использования изотопных отношений U-Th-Pb системы при анализе цирконов методом LA-ICP-MS путем мониторинга прецизионности, сходимости и правильности. Получены новые U-Pb изотопно-геохронологические ...
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(2001)The bedrock in eastern Lapland is divided into the Naruska, Ahmatunturi and Vintilänkaira-Kemihaara granitoid complexes and the supracrustal Tuntsa metasedimentary and Tulppio metavolcanic belts. Traditionally the bedrock ...
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(2012)Метаморфические комплексы Восточной Камчатки, обнажающиеся в пределах Хавывенской возвышенности, на о. Карагинском и п-овах Камчатский и Озерной, слагают крупные (до 1.5 км) вытянутые блоки, пространственно ассоциирующие ...
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(1997)The dating of polymetamorphic rocks with the U-Pb zircon method often results in discordant data. Thus a new technique combining cathodoluminescence imaging (CL) and thermal ion mass spectrometry (TIMS) measurements was ...
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(1998)U-Pb and Pb-Pb isotopic systems were studied in limestones of the Inzer Formation representing the middle part of the Karatau Group of the Urals, whose section is authorized as the Upper Riphean stratotype. Carbonate rock ...
Now showing items 16012-16031 of 37383