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GeologyScience Repository: Recent submissions
Now showing items 21-40 of 40910
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(2006)This work presents new geochronological data on the oldest (Mesoarchean) island-arc association of the Central Karelian terrane (Fennoscandian Shield), which is located in the southeastern part of the Karelian Craton in ...
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(2006)We tested characteristic elements of the Cenomanian bed in the N petroleum field. In this work, we present the results of an investigation of an element of rock bed represented by a parallelepiped 200 m × 200 m × 132.8 m ...
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(2006)In this communication, we present new geological and geochronological evidence (U–Pb dating of single zircon grains and microcharges) for identification of the Vendian stage in the formation of metamorphic complexes of the ...
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(2006)The Makhtesh Ramon erosional–tectonic depression (canyon), 40 km long and approximately 8 km wide, is situated in the Negev Desert (southern Israel), 65 km southwest of the Dead Sea. The canyon rim and center are located ...
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(2006)The objective of our paper is to compute images of reflecting–scattering elements in the investigated geological medium for a given velocity model, i.e., for a model that describes the traveltime of waves with a sufficient ...
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(2006)The Early Proterozoic was characterized by the development of large epicratonic depressions, which often host large and unique deposits of Cu, Pb, Zn, U, Au, Fe, phosphorites, barite, fluorite, and other mineral resources. ...
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(2006)We systematized and generalized data on the basic chemical composition of the suspended load from 128 rivers over the observation period from the beginning of the 20th century (the complete source information will be ...
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(2006)In this paper, we present the experimental data on the influence of background amplitude A on intensity N of relaxation processes in the earth’s crust. We have established that the intensity of relaxation processes correlates ...
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(2006)First data on the Sr, Nd, and O isotopic compositions in Mesozoic granitoids of the upper Amur region and previous data on the Sr and Nd isotopic compositions available for different-age granitoids are discussed. The upper ...
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(2006)The Fedorova–Pana Massif (~400 km2 in area) located in the central Kola Peninsula belongs to the Northern belt of pyroxenite–gabbronorite PGE-bearing intrusions. The massif is confined to the junction of the Archean Keivy ...
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(2006)The continuing study of lunar regolith with a JSM-5610LV low-vacuum electron microscope equipped with EDS JED-2300 JEOL (Japan) made it possible to detect several oxygen-bearing phases and associated native metal in one ...
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(2006)The aim of this study was to determine at which parameters hydrothermal systems generate rich veins with bulk sphalerite contents of 30% and local concentrations in vein cross sections up to 60-70% and more. Such contents ...
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(2006)Late Cenozoic magmatism in the Greater Caucasus during the last 8.5 Ma was manifested in the Elbrus, Kazbek, and Central Georgian neovolcanic regions. In our work, we present K–Ar dates obtained for young rocks of Central ...
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(2006)Mechanisms of the incorporation of isomorphic impurities of Al, Ti, and Ge into quartz were studied by EPR techniques. For this purpose, laboratory experiments were carried out on quartz annealing, which allowed us to model ...
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(2006)The Greenland continental margin is a modern example of a passive margin formed as a result of the opening of the northern Atlantic in the Late Mesozoic–Early Cenozoic. The time of the beginning of spreading in the Labrador ...
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(2006)The experiments were conducted with fractions of low albite, intermediate sanidine, and α-quartz crushed to 50–100 μm. The fractions were repeatedly rinsed with water in an ultrasonic bath to remove dust particles. The ...
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(2006)Distinctive compositional features of cyclic saturated hydrocarbon biomarkers have been established in oils from the main petroliferous lithostratigraphic complexes of various structural zones in the Timan-Pechora petroliferous ...
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(2006)The paper summarizes the principal results obtained over the past three decades at the Vernadsky Institute and the Department of Geochemistry of the Moscow State University by the computer simulation of basaltic magma ...
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(2006)The spatial and temporal dynamics of stream net density (SND) within the Central and Southern parts of the Russian Plain during the last two centuries are studied by comparison of historical cartographic sources. A significant ...
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(2006)(Ba,V) micas are rather rare. Reports about their occurrence in the Urals are unknown to date. We found these micas in igneous and metamorphic rocks of the Il’menskie Gory (Ilmeny Mountains) Complex and its framework in ...
Now showing items 21-40 of 40910