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GeologyScience Repository: Recent submissions
Now showing items 1-20 of 40910
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(2006)The lithosphere of rift zones is characterized by high permeability. Therefore, discharge of endogenous fluids is confined to these zones. Additional heat transport related to their flux should be reflected in the joint ...
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(2006)This paper is dedicated to a numerical modeling study of the formation mechanisms of a large-scale vortex over a warm water band on the ocean surface. For this purpose, we developed a 3D model of the atmospheric circulation ...
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(2006)The study of an oxidation zone at the Udokan deposit has shown that alteration of copper sulfides (chalcopyrite, bornite, and chalcocite) under cryogenic conditions is accompanied by the formation of hydrated complex ...
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(2006)The Panarechka volcanotectonic calderalike structure (PVTS) was found in the Early Proterozoic Pechenga–Varzuga Rift Belt (fault-lineament) of the Kola region. This is an oval body (21 × 8 km in size) that extends in a NW ...
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(2006)The Ust’-Dep ophiolite block, a part of the Selemdzha–Zeya Belt, occupies an area of 350 km2 and incorporates apoharzburgite serpentinite massifs intruded by numerous (>60) dikes of diabases and granitoids up to 100 m thick ...
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(2006)Periodic alternation of ice ages and warm interglacial periods is a characteristic feature of the Earth’s climatic system in the Quaternary Period. This is testified by the data from oxygen isotopic analysis on deep-sea ...
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(2006)We studied the Cenozoic sedimentary cover on the basis of data of continuous seismic profiling (CSP) carried out in 2003–2004 in the White Sea in the course of comprehensive geophysical investigations by the Marine Arctic ...
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(2006)Eudialyte is the common mineral of alkaline agpaitic massifs. In some cases, it occurs as a major mineral and important carrier of some rare elements. The crystal chemical formula of typical eudialyte contains six Ca (as ...
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(2006)The first syntheses of diamond polycrystals in pyrrhotite–carbonic melts are reported in this communication. The results obtained are directly related to the issue of diamond origin in the Earth’s mantle, because pores in ...
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(2006)Mass balance of incompatible elements was analyzed for different inferred reservoirs of the bulk silicate Earth. It was shown that the lower mantle, as well as the primitive mantle, includes an MORB-source depleted mantle ...
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(2006)The ruby pressure scale, in which pressure is measured on the basis of the R1 line shift of ruby luminescence, has been reconsidered. The wellknown ruby scale, which was calibrated using room-temperature isotherms of Cu ...
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(2006)The study of scapolite-bearing eclogite-like rocks and granulites, experimental data, and finds of scapolite in igneous rocks showed that high-Ca scapolite can be of both metamorphic and magmatic origin under the high ...
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(2006)The speciation of Fe, Mn, Zn, Cu, Co, Ni, Cr, Pb, and Cd was studied in 52 samples of bottom sediments collected during Cruise 49 of the R/V Dmitrii Mendeleev in estuaries of the Ob and Yenisei rivers in the southwestern ...
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(2006)Geological, petrochemical, and geochemical data are reported for volcanic rocks of a Cretaceous pull-apart basin in the Tan Lu strike-slip system, Asian continental margin. A comparison of these volcanic rocks with magmatic ...
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(2006)Sodalites are framework aluminosilicates with the general formula Na8Al6Si6O24 · (X)(1–2), where X represents Cl –, Br–, I–, S , C , OH –, and other anions. Sodalites usually crystallize in a cubic structure with space ...
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(2006)The evaluation of the abundances of chemical elements in the Earth's crust is a pivotal geochemical problem. Its first solutions in the early 20th century formed the empirical groundwork for geochemistry and justified ...
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(2006)Cosmogenic radionuclides with distinctive half-lives from chondritic falls were used as natural detectors of galactic cosmic rays (GCR). A unique series of uniform data was obtained for variations in the integral gradients ...
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(2006)Anoxic wetlands are an important source for the greenhouse gas CH 4, much of which is emitted in form of gas bubbles. The conditions for formation of gas bubbles have recently been described by an analytical model, which ...
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(2006)Lower Jurassic sediments are widespread in West Siberia, where they rest upon compositionally variable Triassic–Precambrian strata. Their stratigraphy is based on the concept of the gradual cyclic (reciprocal) advancement ...
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(2006)The formation and evolution of deep-seated carbonatite magmas under the PT conditions of diamond formation represent complex physicochemical processes that incorporate multicomponent silicate material of mantle peridotite, ...
Now showing items 1-20 of 40910