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Browsing ELibrary by Title
Now showing items 6359-6378 of 22924
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(1999)Variations in the carbon isotopic compositions of marine carbonate and organic carbon provide a record of changes in the fraction of organic carbon buried through time and may provide clues to changes in rates of weathering ...
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(1998)We have formulated dynamic models of processes hypothesized to give rise to observed seismological structure at the base of the mantle. One dimensional seismic models are determined from thermo-chemical convection calculations ...
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(2002)Fault-related folds in contractional settings do not extend indefinitely, but rather commonly terminate as plunging anticlines near the tips of the genetically-related fault. Geologists often attribute the formation of ...
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(1996)Layer stackings in the ideal and real kaolinite structures are considered in terms of layer orientations i = 1, 2, . . . 6, intra- and interlayer displacements of adjacent 0- and T-sheets, s i and t k, distortions of these ...
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(1981)The relationship between recent crustal movements and evidence of seismicity on the active Turanian plate has been inferred by the author in 1966 from the results of integrated seismological and strain-metering investigations. ...
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(2003)The slip instability of an earthquake and its abrupt energy release depend primarily on the intensity of strength drop during accelerated fault slip. This process is typically attributed to changes of frictional resistance ...
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(1995)Four density fractions of interstellar graphite were analyzed for isotopically anomalous noble gases by stepped heating. As in SiC, the dominant components show the signature of the s-process and apparently come from AGB- ...
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(1998)Ion probe determinations of water concentrations and D/H ratios have been performed on different phases (pyroxene, olivine, and mesostasis) of chondrules from the Bishunpur and Semarkona LL3 chondrites. Mean water ...
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(2004)Small amounts of interstellar grains which survived processes in the protoplanetary nebula were identified in carbonaceous and unequilibrated chondrites. The stellar origin of the diamond, graphite, SiC, and corundum grains ...
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(1995)D/H ratios of two meteorites (Renazzo CR and Semarkona LL3), which are known to exhibit the largest departures from the terrestrial hydrogen isotopic ratios, have been determined with the CRPG Nancy ion microprobe. ...
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(2000)The inflow of 137Cs, 90Sr, 239,240Pu, and 241Am to interstitial solutions was studied in organic and mineral soils that are abundant in the region of Belarus subjected to the consequences of the Chernobyl accident. The ...
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(2006)This study aims to contribute to a better understanding of the nature and evolution mechanism of interstratified clay minerals. We examined the <2 m or <0.2 size fraction of interstratified kaolinite-smectite (k-s) formed ...
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(2001)This paper presents a test of a very simple model for predicting beach slope changes. The model assumes that these changes are a function of both the incident wave conditions and the beach slope itself. Following other ...
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(2002)During the evolution of continents, compressive tectonic phases can leave certain tectonic patterns in the lithosphere to be observed by reflection seismology. Also, in the area of the trans-European suture zone (TESZ) in ...
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(2001)We measure the factors that determine growth rate (temperature, drip rate, calcium ion concentration) for 31 waters that feed stalagmites within six cave systems throughout Europe. Water samples were collected at a frequency ...
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(2003)Intra-oceanic arcs are the simplest type of subduction,systems in that they occur where overridding plates of subduction zones consist of oceanic rocks, contrasting with arcs built on continental margins. They comprise,some,40% ...
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(1989)As is well known, intracontinental seas with oceanic-type crust, such as the Caspian, Black, and Mediterranean seas located within the Alpine-Himalayan fold belt, are among the most enigmatic of geological formations. A ...
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(1996)Thermal dehydroxylation and partial fluorination techniques were used to measure intracrystalline fractionation of oxygen isotopes between hydroxyl and non-hydroxyl sites in kaolinite. Several aliquots of a well characterized, ...
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(1996)Intracrystalline REE distributions in fluorapatite have been studied using cathodoluminescence and synchrotron X-ray fluorescence microanalysis (SXRFMA). In the apatite samples studied the {1010} face grows by the spiral ...
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(2003)Intragranular microshear zones within a greenschist facies calcite marble were studied to try to constrain better the processes of dynamic recrystallization as well as the deformation processes that occur within newly ...
Now showing items 6359-6378 of 22924