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Now showing items 41-60 of 194
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(2001)The Quaternary, the last and shortest period of geological history that is still in progress, is unique in many respects. Quaternary mineral resources are considered here as a constituent of the Quaternary environments. ...
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(1998)The effects of Quaternary sea level changes on the Sr budget of the ocean are investigated using coupled numerical models of the seawater Sr and Ca budgets. Glacial/interglacial sea level cycles influence the Sr concentration ...
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ENHANCED CHEMICAL WEATHERING OF ROCKS DURING THE LAST GLACIAL MAXIMUM: A SINK FOR ATMOSPHERIC CO2? (1999)It has been proposed that increased rates of chemical weathering and the related drawdown of atmospheric CO2 on the continents may have at least partly contributed to the low CO2 concentrations during the last glacial ...
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(2003)An equation of state (EOS) based on thermodynamic perturbation theory is presented for the NaCl-H2O-CH4 system. This equation consistently reproduces PvTX properties and phase equilibria with an accuracy close to that of ...
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(1987)In 1984 the authors detected corundum grains with titanium nitride inclusions in samples of compositionally complex Upper Devonian breccias and Quaternary deposits, collected near the junction of the Azov block with the ...
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(2002)Sedimentation of biogenic and abiogenic components was studied in cores NGC108 (36°36.85'N, 158°20.90'E; water depth 3390 m) and S2612 (32°19.84'N, 157°51.00'E; water depth of 2612 m) from the Shatsky Rise to understand ...
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(2003)The three piston cores, collected from the East Sea, were analyzed to detect changes of sedimentary environment during the late Quaternary. The cores consist mainly of muddy sediments that are interbedded with silty sands, ...
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(2000)The major and trace element and Pb–Sr–Nd isotopic compositions of Quaternary mafic lavas from the northern Ryukyu arc provide insights into the nature of the mantle wedge and its tectonic evolution. Beneath the volcanic ...
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(2004)The isotopic geochronology of a representative collection of moderately acidic volcanics from the Javakheti neovolcanic area in the northwest of the Lesser Caucasus (Georgia) is studied using the K–Ar and Rb–Sr methods. ...
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(2001)Geomorphological investigations in the catchment area of the Baydragiyn river along the southern slope of the Khangay and in the Valley of the Gobi Lakes in western Mongolia provide evidence for Late Quaternary glaciations ...
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(2004)The quaternary chronology and distribution of glaciations through the last million years is described. The scheme of main paleogeographical events is based on multidisciplinary studies (geological, paleontological, ...
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(2004)Field and archival data have been used in compiling the Glaciotectonic Map of Estonia. Two principal types of glaciotectonic deforma- tions shown on this are discussed here: dislocations of rigid bedrock, and soft bed ...
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(2001)We explore the role played on the growth of shallow-water carbonates by changes in accommodation using case studies from Late Quaternary to modern carbonate environments, i.e. coral reefs and carbonate platforms and ramps. ...
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(1997)Thermal structure of the crust beneath the Domandorsky Basin was modeled in the context of its tectonic evolution as a result of backarc rifting processes. The good fit of the theoretical heat flow to the results of heat ...
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(2003)Pre-Quaternary terrestrial climate records in which time has been calibrated using astronomical cycles are, with the exception of lacustrine proxies, poorly represented in the geological record. This omission is a significant ...
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(2001)Isotope and geochemical techniques are the primary way in which the residence time, recharge conditions and subsequent evolution of palaeowaters can be determined. Isotopic species and noble gas concentrations are used as ...
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(2003)Spherical objects, identified as microfossils and named Isuasphaera isua (Pflug), were reported in 1978 from a chert in the 3.7-3.8Ga Isua Greenstone Belt (IGB). Soon afterwards the biological nature of these objects was ...
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(2003)The seismic CMP is the main method of the geological sections study in the Black Sea, because drilling data on the deep basin part are scarce. Accordingly, stratigraphic subdivisions of sedimentary cover can be defined and ...
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(2001)We have calculated long-term erosion rates of 20-100 mm/kyr from quartz-contained 10Be in the bedload of middle European rivers for catchments ranging from 102 to 105 km2. These rates average over 10-40 kyr and agree broadly ...
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(2002)This paper provides an overview of the geography and palaeogeography of the Chuja (Chuya)–Katun river system in the Altai Mountains of south Siberia. In addition, an introduction to the sedimentology of catastrophic flood ...
Now showing items 41-60 of 194