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Now showing items 21-40 of 219
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(2004)Among materials of the OJSC Lukoil obtained in the northern Caspian region, there are cores samples recovered from the depth of 7 to 37 m below bottom, piston cores, and high-resolution seismic profiles. These materials ...
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(1999)Ti-biotite megacrysts, glimmerites, and intergrowths of biotite, clinopyroxene, and ilmenite megacrysts were found in Quaternary basanites and Miocene picrobasaltic tuff of the Vitim Plateau. The TiO2 content in the micas ...
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(2004)Previous studies concluded that the Bosphorus Strait was formed during the Quaternary by fluvial incision of a valley between the Black Sea, to the north, and the Marmara Sea in the south. Hitherto, however, few details ...
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(2006)Calcretes are abundant in Late Quaternary channel and floodplain strata of the southern Ganga plains. In a key section at Kalpi, pedogenic carbonates (nodules, rhizoconcretions, and powdery carbonate) are present within ...
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(1996)Carbonates of mantle origin have been found in xenoliths from Quaternary basaltic volcanoes in NW Spitsbergen. The carbonates range from dolomite to Mg-bearing calcite and have high Mg-numbers [Mg/(Mg+Fe)=(0.92–0.99)]. In ...
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(2006)The Masoko maar (southern Tanzania) provides one of the most continuous Late Quaternary lacustrine sedimentary records from Africa. A detailed chronostratigraphic framework coupled with sedimentological and magnetic ...
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(1989)We chose for investigaton the Koshabulak tectonic structure, within the Sultan-Sandzhar swell, which is one of the group of Pitnyak tectonic uplifts of the Bukhara Bench, which were formed during Hercynian time and continue ...
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(2003)Lithologies and stratigraphic relationships of late Quaternary core sediments were examined in three piston cores, recovered from the western Ulleung Basin. The approximately 8-m long cores consist of muddy sediments that ...
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(2006)The hydrochemistry of major ions and environmental isotope compositions (18O, 2H and tritium) of water samples have been used to investigate the characteristics of rainfalls, surface water and groundwater in the Damascus ...
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(1989)Mud volcanoes occupy a special place among natural phenomena. First, in terms of the scale of discharges of carbonaceous gases from them, the acute stage of their eruption is comparable to surface lava eruptions from cone ...
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(2006)This review embraces approximately 100 publications on chlorine (Cl) in coal. Topics reviewed in this paper include: (a) historical introduction; (b) some peculiarities of Cl environmental geochemistry; (c) estimation of ...
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(1989)Both of the main morphological types of chromiferous 'upper mantle' amphiboles and micas, i.e. the interstitial and poikilitic, previously found in inclusions from alkalic basalts, have now been identified in ultramafic ...
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(2004)The specified on the basis of K-Ar data magmatic activity phases in manifestation time coincide with certain activity phases of other large latest-volcanism centers at Greater Caucasus - Elbrus and Kazbek. The initial ...
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(2006)The Sun has an obvious effect on climate since its radiation is the main energy source for the outer envelopes of our planet. Nevertheless, there is a long-standing controversy on whether solar variability can significantly ...
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(1999)A palynological analysis of the Baikal sediments from a 200 m deep borehole permitted tracing continuous climatic and vegetation changes in the Baikal region for the last 5 Ma (from the Early Pliocene). The sediment age ...
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(1989)Processes of hydrocarbon accumulation in oil and gas basins are controlled by various geologic bodies, including the so-called clinoforms, which certainly affect these processes. It is very important to determine the origin ...
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(1988)The Quaternary Shavaryn-Tsaram volcano (central Mongolia) is one of the richest known repositories of mantle nodules and megacrystals. Magnesial biotite, rhombic pyroxene, pyrope, sanidine and ilmenite have been found in ...
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(2006)The late Mesozoic-early Tertiary evolution of the Mediterranean region was defined by a series of collisions between Gondwana-derived continental blocks and Eurasia as the intervening ocean basins closed. The late ...
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(1997)The Late Cenozoic volcanic rocks of the East Sikhote Alin are believed to be Pliocene-Quaternary formations by most investigators, even though there is evidence that volcanic activity there began as early as the late ...
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(1997)The Late Cenozoic volcanic rocks of the East Sikhote Alin are believed to be Pliocene-Quaternary formations by most investigators, even though there is evidence that volcanic activity there began as early as the late ...
Now showing items 21-40 of 219