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Геология России: Recent submissions
Now showing items 501-520 of 40116
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(2006)Pollucite, Cs-analogue of micas and Cs-enriched beryl are the common Cs-enriched minerals in nature. They all occur in the central part or exocontact wall rocks of the rare-element granites and LCT (Lithium-Cesium-Tantalum)-type ...
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(2006)Fifteen apatite samples and five zircon samples from volcanic rocks and granites in Bogda - Harlik mountains were analysed. The apatite ages range from 109.3 to 11.9Ma and the zircon ages are within the range 81. 7-56.8 ...
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(2006)In Southern China, Geologists normally take the volcanic ash bed (with the thickness from 10 to 50 cm) as the boundary for marine Lower and Middle Triassic (i. e. the boundary between Anisian and Olenekian). The volcanic ...
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(2006)Teleseismic receiver functions, RFs, allow us to image the spatial variation of the converters in crust and upper mantle along the array from Fuyun to Kuerle. Some discontinuous north-dipping mantle converters are seen ...
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(2006)By the synthesis study for three central Pacific ferromanganese crusts (hereinafter for short as crusts) of their biostratigraphy, structure and element geochemistry on the section along their growth directions, it was ...
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(2006)The Donghai region is tectonically located in the southwestern margin of the Su-Lu Orogenic Belt. Several Neoproterozoic gneissic alkaline granite plutons, with typical mineral assemblages of quartz + K-feldspar + ...
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(2006)High-Mg ultrapotassic rocks present in the NS-striking rift system of Lhasa Block in Tibetan Plateau. Geochemically these High-Mg ultrapotassic rocks are characterized by relatively high SiO2 (53% ~ 50%), and high K2O (7% ...
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(2006)According to the alteration and mineraliazation assemblage, mineralizations in Xiongcun deposit can be obviously distinguished into two styles, i. e. early veinlet-disseminated Cu(Au) mineralization with associated ...
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(2006)Concentrations of platinum group elements (PGE) of ores and related rocks from Baimazhai Ni-Cu sulfide deposit were determined by using an ICP-MS with nickel sulfide fire assay pre-concentration. The results show that the ...
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(2006)Tengiz field is an isolated carbonate buildup in the southeastern Precaspian Basin, containing a succession of shallow-water platforms ranging in age from late Famennian to early Bashkirian. Platform backstepping from ...
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(2006)he Tengiz buildup, an intensely cored and studied isolated carbonate platform in the Precaspian Basin, contains a succession of shallow-water deposits ranging from Famennian to Bashkirian in age. From a reservoir perspective, ...
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(2006)Sandstones diagenesis in the Cretaceous Yuyang Formation, Jianghan Basin, China is charactered by cementation and replacement. Optical microscopy and other petrological studies have revealed four main diagenetic events. ...
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(2006)Seismic anisotropy in subduction zones results from a combination of various processes. Although it depends primarily on the orientation of olivine in response to flow, the presence of water and melt in the wedge may modify ...
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(2006)Cation ordering in two important iron nickel sulfide minerals, pentlandite and violarite, was studied by neutron powder diffraction using samples prepared with isotopically enriched 60Ni. Pentlandite of composition Fe4.8Ni4.2 ...
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(2006)The representative basalts and hornblende gabbros samples have been selected from early Cretaceous "bimodal volcanics" and "composite plutons" from eastern Zhejiang and southeastern Fujian provinces of southeastern coast ...
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(2006)Shear-wave splitting estimates from recordings of 10 portable seismographic stations during the first year of the RETREAT seismic deployment, in combination with broadband data from the Italian national seismic network, ...
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(2006)We report a new observation of the olivine B-type lattice-preferred orientation (LPO), from the garnet peridotite at Cima di Gagnone, Switzerland. The olivine B-type fabric forms at low temperatures and/or high stress in ...
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(2006)Shock recovery experiments of sinoite (Si2N2O) were carried out in a pressure range of 28-64 GPa. Post-shock samples were investigated by optical microscopy, X-ray diffraction, micro Raman spectroscopy, and transmission ...
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(2006)The Baishiquan Cu-Ni sulfide deposit is located in the northern part of the Center Tianshan Massif, south of the Aqikuduke-Shaquanzi fault of the Eastern Tianshan Mountains. Ore-body was formed by the magmas and lay within ...
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(2006)After comparing study on Permian basalts from Stantanghu basin eastern of Xinjiang and Liuyuan area of Beishan western of Gansu, on the basis of geochemical characteristics, it is concluded that nearly synchronogenic basalts ...
Now showing items 501-520 of 40116