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Now showing items 1695-1714 of 39065
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(2004)Measurements of space-time distributions of the background emissions in the frequency range 0.5-5 Hz and their seasonal and diurnal variations are presented. The analysis of impedance ratio determines the presence of high ...
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(2002)Numerous analog models and some natural examples display smoothly curving backlimb fold hinges over sharp, angular bends in the underlying thrust surface. We present a new kinematic model that can reproduce this geometry ...
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BACKSCATTERED 39AR LOSS IN FINE-GRAINED MINERALS: IMPLICATIONS FOR 40AR/39AR GEOCHRONOLOGY OF CLAY (2000)The interpretation of 39Ar recoil loss from clay minerals during application of the 40Ar/39Ar analytical technique is controversial. To further explore the mechanism for 39Ar recoil loss, we quantified the effects of ...
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(2000)The publication of Backscattered Scanning Electron Microscopy and Image Analysis of Sediments and Sedimentary Rocks marks a significant point in the history of sedimentary petrology. The evolution of the scanning electron ...
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(1987)Initial studies of the ability of silicate bacteria to break down smectite minerals used four smectite specimens from the Askani clay deposit, Georgia. They were subjected to quantitative chemical, as well as by X-ray and ...
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(1999)Transmission electron microscopic (TEM) analyses of freshwater biofilms and bacterial cells, grown in experimental culture, have shown that these microorganisms are commonly associated with fine-grained (Fe, Al)-silicates ...
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(1999)Mobilization of contaminant Pb and other cations from a weathered andesite was examined by conducting water-rock leaching experiments to measure release rates of the major and minor elements found in the bulk rock. Experiments ...
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(1996)Polonium has been observed as the sole α-emitting nuclide in groundwaters of central Florida, in the absence of its radiogenic parents, at levels of 1,000 dpm/l or more. Because of the chemical similarity of Po to S (both ...
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(PANGAEA, 1995-10-22)
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(1999)The study of the fossilization processes of modern cyanobacteria provides insights needed to recognize bacterial microfossils. The fossilization of cyanobacteria is discussed and images of recent and fossil bacteria and ...
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(1996)It is well known that many microorganisms can reduce the highly toxic soluble selenium oxyanions (selenate and selenite) to a much less toxic insoluble form, namely elemental selenium. We are developing a bacterial treatment ...
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(PANGAEA, 2016-07-20)Bacteriohopanepolyols (BHPs) are ubiquitous bacterial membrane lipids, encountered in soils, river and marine suspended particulate matter (SPM) and sediments. Their abundance and distribution provides a direct means to ...
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(1990)In an area of the Eastern Aldan region, on the periphery of a large body of rocks of the ultramafic-alkalic carbonatite (UAC) association, in the middle of a formation of carbonate (dolomitic) rocks of Vendian to Early ...
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(1983)The comparison of geological and geophysical data from the Kenya and Baikal rift zones permits us to consider the formation of these zones to be associated with the development of wide asthenospheric upwellings beneath ...
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(2002)The basic stratigraphic domains of the Late Precambrian in Siberia are the Uchur-Yudoma, Baikal-Lena, and Priyenisel-Angara structure-facies areas (SFA) of the periphery of the old Siberian Platform. Correlation of local ...
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(2003)По серии позвонков из известного верхнемелового местонахождения Баин-Дзак (Монголия) описан рогатый динозавр Bainoceratops efremovi gen. et sp. nov. Особенности морфологии отличают новую форму от типичного для джадохтских ...
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(2003)A new horned dinosaur, Bainoceratops efremovi gen. et sp. nov., is described on the basis of vertebral series from the well-known Bain-Dzak locality (Mongolia). The new form is distinguished from Protoceratops andrewsi ...
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(2008)This new tectonic synthesis provides a framework for understanding the dynamic evolution of Baltica and for constraining tectonic correlations within the context of the Neoproterozoic break-up of Rodinia–Pannotia. Cryogenian ...
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(2002)We propose that Baltica was geographically inverted throughout the Neoproterozoic and therefore suggest reassessment of the classic Wilson Cycle paleoreconstruction de- picting an Atlantic-type early Paleozoic (Iapetus) ...
Now showing items 1695-1714 of 39065