نتایج جستجو برای: organic geochemistry
تعداد نتایج: 207891 فیلتر نتایج به سال:
Ab&r&-Sulphur isotope abundances of thirty-nine specimens of seventeen meteorites are reported. The resultril show again the remarkable constancy of the sulphur isotope ratios for meteorites of all types. However, differences in the SBa/Sa* ratios of 0.4 %a would appear to be significant. The Ssz/P4 ratio for meteorites is discussed as a possible base level from which fr~tion&tion in the earth’...
SPECTROSCOPY OF EXPERIMENTALLY SHOCK METAMORPHOSED QUARTZITE. Arnold Gucsik, Christian Koeberl, Franz Brandstätter, Eugen Libowitzky and Wolf Uwe Reimold, Institute of Geochemistry, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria. ([email protected]) Institute of Geochemistry, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria. ([email protected]) Depa...
a Department of Geology, Sölvegatan 12, Lund University, SE-22362 Lund, Sweden b Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA c Department of Geoscience, University of Wisconsin, 1215 W. Dayton St., Madison, WI 53706, USA d Robert A. Pritzker Center for Meteoritics and Polar Studies, Department of Geology, The Field Museum of N...
Yellowstone National Park plays host to numerous microbiological research projects — officially 23, according to the 1996 Investigators' Annual Reports. However, once categories such as aquatic ecology, the study of brucellosis and other wildlife diseases, environmental education, geochemistry and geothermal systems, and vegetation are included, the total came to at least 35 in 1996. Research p...
N. Pirrone, S. Cinnirella, X. Feng, R. B. Finkelman, H. R. Friedli, J. Leaner, R. Mason, A. B. Mukherjee, G. B. Stracher, D. G. Streets, and K. Telmer CNR-Institute of Atmospheric Pollution Research – Division of Rende, Rende, Italy State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China Geosciences Department, University of Tex...
This review is intended principally to be a reasonably comprehensive bibliography. It covers papers by workers in stable isotope geochemistry in the United States that have been published or presented at national meetings since the last quadrennial report. The titles of the papers in the bibliography are in most cases indicative of the general content, so only the highlights are described below...
Soils are an important site of carbon storage1. Climate is generally regarded as one of the primary controls over soil organic carbon1,2, but there is still uncertainty about the direction and magnitude of carbon responses to climate change. Here we show that geochemistry, too, is an important controlling factor for soil carbon storage.Wemeasured a range of soil and climate variables at 24 site...
The Kazhdumi Formation of the Bangestan Group is a well-known and important source rock in most oil-fields in the Zagros Basin. In order to examine productivity of this formation in southwestern Iran, and to correlate petrographical and palynological data with geochemical properties, one of the best outcrops of this formation, located in Tange-Maghar 45 km northwest of Behbahan city, was sampl...
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