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Геология России: Recent submissions
Now showing items 1821-1840 of 43490
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(2006)Recent estimates of the rotation between Nubia and Somalia have resulted in disparate poles of rotation for the motion since 3.16 Ma (southwest of South Africa) compared with that since 11.03 Ma (near the east tip of ...
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(2006)The Qaleh-Zari copper deposit, located in South Khorasan in the Central Lut region of Iran, is a polymetallic vein deposit with major amounts of Cu, Au, Ag and minor amounts of Pb, Zn and Bi. Mineralization occurs in a ...
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(2006)The Etna 122 BC basaltic eruption had two Plinian phases, each preceded and followed by weak phreatic and phreatomagmatic activity. This study infers changing eruption dynamics from density, grain size, and microtextural ...
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(2006)Akdalaite (5Al2O3·H2O), as well as hogbomite, kyanite, Zn-bearing staurolite, Mg-chlorite, gahnite, hereynite, quartz, apatite, and zircon, are present as submicrometer-size minerals associated with rutile aggregates ...
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(2006)This paper presents field, geochemical and isotopic (Sr, Nd, Pb) results on basalts from the Antipodes, Campbell and Chatham Islands, New Zealand. New 40Ar/39Ar age determinations along with previous K-Ar dates reveal three ...
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(2006)The coal of the Miocene Bukit Asam deposit in south Sumatra is mostly sub-bituminous in rank, consistent with regional trends due to burial processes. However, effects associated with Plio-Pleistocene igneous intrusions ...
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(2006)Reflection seismic imaging of the uppermost kilometer of crystalline bedrock is an important component in site surveys for locating potential storage sites for nuclear waste in Sweden. To obtain high-quality images, ...
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(2006)Fault data from the central Apennines (Italy) were integrated with earthquake information from seismic catalogues in order to derive an empirical relation between the magnitude of the strongest historical earthquake and ...
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(2006)Supercontinents containing most of the earth's continental crust are considered to have existed at least twice in Proterozoic time. The younger one, Rodinia, formed at ~1.0 Ga by accretion and collision of fragments produced ...
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(2006)The supracrustal rocks in the easternmost part of the Proterozoic fold belt of North Singhbhum, eastern India, are folded into a series of large upright folds with variable plunges. The regional schistosity is axial-planar ...
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(2006)In situ laser ablation inductively coupled plasma mass spectrometry analysis of trace elements, U-Pb ages and Hf isotopic compositions of magmatic zircon from I- and S-type granitoids from the Lachlan Fold Belt (Berridale ...
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(2006)A late Mesozoic belt of volcanic-intrusive complexes occurs in Southeast China. The Qianlishan granites are distributed in the northwest of the belt. The pluton is composed of porphyritic biotite granite (153 Ma) and ...
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(2006)The Anhua-Xupu shoshonitic lamprophyres, emplaced along the western margin of the South China orogen (Cathaysian block), formed about 207 Ma. They are characterized by high K2O/Na2O ratios (0.84-1.72), high K2O + Na2O ...
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(2006)Most fluorite deposits in southernmost Brazil are hosted by Neoproterozoic granitic associations. Fluorite deposits are, nevertheless, much younger than granitic magmatism, and the only probable role of granitic rocks in ...
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(2006)Small biserial foraminifera were abundant in the early Miocene (ca. 18.9-17.2 Ma) in the eastern Atlantic and western Indian Oceans, but absent in the western equatorial Atlantic Ocean, Weddell Sea, eastern Indian Ocean, ...
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(2006)Aillikites (carbonated, melilite-free ultramafic lamprophyres grading to carbonatites) are minor components of the Gardar alkaline igneous province. They occur principally as minor intrusions and as clasts in diatremes, ...
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(2006)A methodology is proposed for the quantification of volcanic explosions based on three parameters derived from broad-band seismic signals: The counter force of the eruption F, the power of the explosion P and the duration ...
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SEISMIC ATTENUATION DUE TO WAVE-INDUCED FLUID FLOW IN A POROUS ROCK WITH SPHERICAL HETEROGENEITIES (2006)Most natural porous rocks have heterogeneities at nearly all scales. Heterogeneities of mesoscopic scale - That is, much larger than the pore size but much smaller than wavelength - Can cause significant attenuation and ...
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(2006)Elliptical holes ~0.2-0.3 mm in diameter with beveled edges have been found penetrating the zooids of encrusting hederellids (colonial metazoans of uncertain affinity) from several localities in the Middle Devonian (Givetian) ...
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(2006)Extensive measurements of water balance components in a forest under the succession from Japanese red pine (Pinus densiflora) to evergreen oak (Quercus myrsinaefolia) were carried out. Significant decreases of transpiration ...
Now showing items 1821-1840 of 43490