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Геология России: Recent submissions
Now showing items 1181-1200 of 40749
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PHASE EQUILIBRIA OF GLAUCOPHANE-AND KYANITE-BEARING ECLOGITES IN THE UHP BELT OF WESTERN DABIESHAN (2006)There still have been some disputable opinions on the UHP eclogites in western Dabieshan, especially regarding the stability of glaucophane- and kyanite-bearing assemblages in eclogites, their peak PT conditions and mineral ...
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(2006)The South Tianshan Orogen between the Yili-Kazakhstan and Tarim-Karakum plates is one of the representatives of the Central-Asia. type' Orogen and has undergone complicate tectonic evolution and crustal growth processes. ...
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(2006)Picritic lava flows near Lijiang in the late Permian Emeishan flood basalt province are associated with augite-phyric basalt, aphyric basalt, and pyroclastic units. The dominant phenocryst in the picritic flows is Mg-rich ...
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(2006)Two types of adakites were recognized in northern Xinjiang. The first one is subducted oceanic slab-related adakite and composed of Nb-enriched basalt(NEB) and high-Mg or Mg andesite (HMA or MA). The second one is underplating ...
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(2006)In this paper, we present the combined K-Ar geochronological, elemental and isotopic geochemical data for the felsic volcanics from Xilinhaote-Xiwuqi, Inner Mongolia. The whole-rock K-Ar dating gives an early Triassic age ...
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(2006)Re-Os isotopic age of sulfide ores from Baimazhai Cu-Ni sulphide deposit in Yunnan province was determined by using carius tube decomposing technique, acetone extracted Re and inductively coupled plasma mass spectrometry(ICP-MS). ...
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CONDUIT MODELING OF MAGMA FLOW DYNAMICS: A CASE STUDY ON THE ERUPTIVE PROCESS AT THE TIANCHI VOLCANO (2006)Magma uprising velocity is related to the viscosity, density and pressure of the magma, in the lower part of conduit, and a usual model of a viscous liquid can be applied to simulate the flow dynamics of magma. In the ...
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(2006)The Takeshiken alkali-rich intrusion is a typical postorogenic pluton in Chinese Altay orogen. Zircon U-Pb (TIMS) dating yield a 206Pb/238U age of 286 ± 1Ma (MSWD = 0.05), which is interpreted as its formation age. This ...
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(2006)Метасоматиты эйситовой формации – это околорудно измененные породы, выделенные, изученные и описанные на урановых («классические», низкотемпературные), редкометальных, полиметаллических, а также на золоторудных (кварц-жильного ...
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(2006)A numerical model of chemical weathering in soil horizons and underlying bedrock (WITCH) has been coupled to a numerical model of water and carbon cycles in forest ecosystems (ASPECTS) to simulate the concentration of major ...
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(2006)When recent geological calibrations of the 176Lu decay constant are used, the 176Lu-176Hf ages of chondrites are consistently 4% too old (?4.75 Ga). Here, we suggest that this discrepancy reflects the photoexcitation of ...
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(2006)Магнетит постоянно присутствует в измененных ультраосновных породах, прежде всего, в хризотиловых и антигоритовых серпентинитах, в виде рассеянной вкрапленности и является продуктом выноса железа из минералов исходных пород ...
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(2006)В настоящее время в западной литературе доминирует мнение, что формирование всего разнообразия альпинотипных ультрамафитов континентов и океанов есть результат не столько частичного плавления пиролита мантии, сколько ...
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(2006)По современным представлениям восточная граница Восточно-Европейской платформы проводится по зоне Главного Уральского разлома. На участке Среднего Урала платформа представлена Волго-Уральской антеклизой, крупной надпорядковой ...
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(2006)Геохимические исследования, проведённые ранее для карбонатитов Ильмено-Вишневогорского комплекса (ИВК), посвящены вопросам их редкометальной специфики, рудоносности, фациальной принадлежности, сопоставлению с платформенными ...
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(2006)Our knowledge of the degassing pattern of sulphur, chlorine and fluorine during ascent and eruption of basaltic magmas is still fragmental and mainly limited to water-poor basalts. Here we model and discuss the pressure-related ...
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(2006)Exploring the potentials of new methods in palaeothermometry is essential to improve our understanding of past climate change. Here, we present a refinement of the published ?44/40Ca- temperature calibration investigating ...
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(2006)A model Suwannee fulvic acid (SFA [Leenheer, J.A., 1994. In: Baker, L.A. (Ed.), Chemistry of Dissolved Organic Matter in Rivers, Lakes and Reservoirs. Advances in Chemistry Series, vol. 237. American Chemical Society]) was ...
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VAPOR PRESSURES AND EVAPORATION COEFFICIENTS FOR MELTS OF FERROMAGNESIAN CHONDRULE-LIKE COMPOSITIONS (2006)To determine evaporation coefficients for the major gaseous species that evaporate from silicate melts, the Hertz-Knudsen equation was used to model the compositions of residues of chondrule analogs produced by evaporation ...
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(2006)To constrain seasonal changes in the long-range atmospheric transport of land-derived lipid biomarker compounds, we investigated the compound-specific stable isotopic composition of marine aerosol n-alkanes collected from ...
Now showing items 1181-1200 of 40749