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Now showing items 16567-16586 of 43490
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(Федеральное государственное бюджетное учреждение науки Институт земной коры Сибирского отделения Российской академии наук, 2016)Introduction. Transtension is a system of stresses that tends to cause oblique extension, i.e. combined extension and strike slip. Syn-volcanic transtensional deformations of the lithosphere may provide two possible scenarios ...
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(2001)A review is presented on published geochemical and isotopic (Sm-Nd and Rb-Sr) data on the worldwide occurrence of rare-metal granites and greisens in comparison with barren granites of the I and S types. The ratios of major ...
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(1999)The carbon-cycle significance of soil carbonate fluxes is subject to large uncertainties because it is not clear precisely how much calcium is derived from atmospheric sources compared with that from the chemical weathering ...
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(2001)Carbonatites of the western Transbaikalia rift zone were formed in the middle of the Early Cretaceous (130-120 Ma) and are represented by lavas, tuffs, dikes, and veins. They are associated with other highly alkaline ...
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(2001)Potassic magmas (their derivatives, kimberlites and others) are among the products of incipient mantle melting, which occurs at an increase in heat flow (plume ascent). They provide reliable information on the composition ...
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(2002)The South Anyui suture zone extends from the eastern part of the Laptev Sea into western Chukotka (northeastern Arctic Russia) and is everywhere marked by Mesozoic terrigenous turbidite and fragments of ophiolitic sequences. ...
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(2000)Two volcanic centers, South and North Cherpuk Volcanoes, were investigated on the Sredinnyi Range of Kamchatka. The aim of the work was to study the morphology and structure of cinder cones and lava flows and the compositions ...
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(2006)Significant differences between faunal and floral associations existing in different paleogeographic realms in the Kungurian-Late Permian interval make it difficult to correlate the Permian deposits of the world. Resolving ...
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(2005)This paper presents new data for the geological structure of South Sakhalin which is a connecting link between the structural features of the Sakhalin and Hokkaido islands which form the Late Mesozoic-Early Cenozoic ...
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(2006)Alkenone palaeothermometry has demonstrated a wide spatial and temporal applicability for the reconstruction of sea-surface temperatures (SST). Some oceanic realms, however, remain poorly studied. We document U37K' index ...
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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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(2001)In the course of volcanic activity the rising magma interacts with the basement rocks. The resulting system of magma conduits, marked by dikes and subvolcanic bodies, tends to spread as volcanic events are repeated. The ...
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(PANGAEA, 2001-05-31)
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(2006)Stacking of approximately 1500 radial receiver functions recorded at about 80 broadband seismic stations deployed in southern Africa reveals systematic spatial variations in the ratio of crustal P and S wave velocities ...
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(2002)Ten terrestrial impact structures were imaged during two flights of the 1994 space radar laboratory (SRL) experiment. These craters include Wolf Creek, Australia; Roter Kamm, Namibia; Zhamanshin, Kazakhstan; BP and Oasis, ...
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(2003)Nanophase Fe metal grains (np-Fe°) are a product of space weathering, formed by processes related to meteorite impacts, and solar-wind sputtering on airless planetary bodies, such as the Moon. Iron isotopes of lunar soils ...
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(2004)Interpolating physical properties in the subsurface is a recurrent problem in geology. In sedimentary geology, the geometry of the layers is generally known with a precision much superior to that which one can reasonably ...
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(2004)Since its launch in December 1999, the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument has been observing over 1300 of the world's volcanoes during the day and night and at different times ...
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(2003)The low modal abundances of relict chondrules (1.8 vol%) and of coarse (i.e., ≥200 μm-size) isolated mafic silicate grains (1.8 vol%) in Spade relative to mean H6 chondrites (11.4 and 9.8 vol%, respectively) show Spade to ...
Now showing items 16567-16586 of 43490