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Геология России: Recent submissions
Now showing items 521-540 of 40116
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(2006)Platinum group elements (PGE), Au contents and Os isotopic compositions in ferromanganese crusts and their basaltic substrates from the central and west Pacific Ocean were analyzed. The results show that their PGE and Au ...
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(2006)Study of the postcollisional volcanics in Lhasa block in southern Tibet is one of the most important progresses in the Tibetan plateau in the past 10 years. This paper presents new 40Ar/39Ar dating results on biotites and ...
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(2006)It is generally believed that Cenozoic potassic and ultrapotassic volcanic rocks in Tibetan plateau are derived from a mantle source, but recent studies showed that some potassic rocks may also come from a lower crust. The ...
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(2006)Granite formation after major continental collision in the eastern Tianshan Mountains can be divided into three stages: the compression-extension transition stage (310 ~ 285Ma), the post-collision extension stage (285 ~ ...
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(2006)The Gangdese tectono-magmatic belt in the Tibetan continental collision zone can be divided, at least, three segments, i. e., western Gangdese (west to 85°E), middle Gangdese (85°E to 90°E) and eastern Gangdese (east to ...
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(2006)The Qiushuwan Cu-Mo deposit is an important porphyry-skarn type Cu-Mo deposit in the East Qinling. Six samples of molybdenite for Re-Os isotopic dating are analyzed and the model ages obtained from 145.57 ± 1.80Ma to 147.98 ...
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(2006)Geothermometers of garnet-clinopyroxene Fe-Mg partition and quartz-mineral oxygen isotope fractionation are normally used to estimate temperatures of eclogite formation. Lately, natural observations and experimental ...
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(2006)It is very important to discovery the northern boundary of eastern Tethyan tectonic domain not only for constraining its range and evolution, but also for establishing the tectonic affinity of microcontinents or terranes ...
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(2006)The major element, trace element and isotopic data of the latest-Paleozoic volcanic rocks which include early-Carboniferous andesites (ECA), early-Permian trachytoids (EPT) and middle-Permian basalts(MPB), from Santanghu ...
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(2006)The characteristics of magnetic susceptibility of core samples and logging susceptibility from the depth of 100 ~ 2000m mainhole of Chinese Continental Scientific Drilling (CCSD) are systematically compared. The results ...
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(2006)The western Tianshan high-pressure (HP) metamorphic belt, which is probably to represent paleosubduction mélange of Paleozoic south Tianshan ocean between the Yili-central Tianshan and Tarim plates, is situated in the south ...
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(2006)Dehydration of subducted ocean crust plays a significant role in the generation of island arc volcanics. Hydrous eclogite-facies veins cutting through the host blueschists/eclogites in the western Tianshan high-pressure- ...
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(2006)The region includes southeastern Yunnan and North Vietnam, which locates among the Nanhua, Yangtze and Indio-China Blocks, is a key target to study the tectonic evolution of South China and Southeastern Asian. There is a ...
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(2006)Significant crust uplift and erosion are common processes in response to geological crises. Our study on emplacement depth of Mesozoic granites and gold deposition in the Jiaodong Peninsula of eastern China, respectively, ...
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(2006)Mesozoic volcanic rocks section in Manzhouli Xinyouqi, Inner-Mongolia is mainly composed of trachy-andesite, trachyte and rhyolite 40Ar-39Ar dating of lower section trachy-andesites and middle section rhyolites give a ...
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(2006)Jinvozi Gold Deposit lies in the mid ore-forming band of Beishan Belt, Gansu Province. The analytical result of Raman spectrometric measurement for fluid inclusions in quartz shows that HO2-NaCl, H2O-CO2-CH4, -NaCl, or H2 ...
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(2006)A new-found Permian-Triassic boundary section in Xiushui, Jiangxi Province, China shows evidence for sea-level drop during the latest Permian. Evidence for sea-level drop was preserved in a 2.1 m thick interval of limestone, ...
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(2006)Re-Os isotopic systematics is the best tracer on studying the ophiolitic peridotite because, in contrast with the geochemical properties of Sm-Nd, Rb-Sr, U-Th-Pb and Lu-Hf, all of which are incompatible elements, Os is a ...
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(2006)Raohe Complex, located in the eastern Heilongjiang Province and composed of deep oceanic sediments and mafic igneous rocks,was considered as slice of oceanic crust and intruded by Hamahe and Taipingeun granites. Zircon ...
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(2006)Changbaishan Tianchi volcano once occurred a great eruption around 1000AD, the eruption materials of which were widely distributed gray comenditic pumice and pyroclastic flow. Melt inclusions were found in phenocrysts of ...
Now showing items 521-540 of 40116