نتایج جستجو برای: chlorite
تعداد نتایج: 1412 فیلتر نتایج به سال:
Late Jurassic sandstones of the shallow-marine Sundance Formation contain authigenic chlorite minerals that occur as rosette-like pore fillings of interstratified berthierine/chamosite (B-C) and honeycomb-like pore linings of corrensite and discrete chlorite. B-C is nearly ubiquitous in Sundance sandstones, but is absent near the top of the formation, whereas corrensite and discrete chlorite we...
Journal of the American Chemical Society is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Systematic design of chemical oscillators. 17. Birhythmicity and compound oscillation in coupled chemical oscillators: chlorite-bromate-iodide system Mohamed Alamgir, and Irving R. Epstein J. Am. Chem. Soc., 1983, 105 (8), 2500-2502• DOI: 10.1021/ja00346a080 •...
Greenschist facies metabasite (chlorite schist) and metasediments (banded iron formation (BIF)) in the Wutai Complex, North China Craton recorded extensive fluid activities during subduction-related metamorphism. The pervasive dolomitization chlorite schist significant dolomite enrichment at BIF–chlorite interface support existence of highly channelized updip transportation CO2-rich hydrotherma...
Hydrothermal-reactor experiments were conducted to investigate the potential formation of chlorite and microquartz grain coatings on detrital quartz feldspar grains, understand their role in inhibiting (albite) overgrowths. Modern-day proximal distal unconsolidated sediment from Bute Inlet (British Columbia, Canada) with known amounts precursor clay content, used as starting material. The sampl...
pedogenesis and clay mineralogy of soils and rock samples were studied in a transect of calcareous, gypsiferous, saline soils and sediments of bakhtegan lake bank in southern iran. the main objectives of study were to determine the occurrence of clay minerals and factors controlling their distribution pattern and relative abundance in soils and parent materials. the soil parent material is high...
A curious fusion between chlorite dismutase-like and antibiotic biosynthesis monooxygenase-like domains within a single open reading frame has been revealed by both sequence homology and structural modeling in Haloferax volcanii PitA and its homologues in other halophilic archaea. While this fusion may reflect an environmental adaptation to life in hypersaline environments and hence one specifi...
Spatiotemporal pattern formation in the autocatalytic chlorite–tetrathionate reaction is studied experimentally in porous media where heterogeneities are introduced as glass beads packed in a monolayer. From initially vertical planar chemical fronts in a vertical slab, asymmetric convective structures with stable geometry evolve which propagate horizontally with constant speed. The single conve...
Loess may be integrated into slope deposits at different soil depths and influence related physical, chemical mineralogical properties. Therefore, tracking the border between deposited loess underlying materials estimating depth of penetration is a challenge. Five soils from Lower Silesia province in south-western Poland having types geologic substrate being covered by various thicknesses were ...
ABS~CT Particle-size analyses of brickearth and Clay-with-flints from Kent, England, are presented. A calcareous sample of brickearth is comparable to loess. In th~ clay fraction, there is more illite (or glauconite) than kaolin; and there is some chlorite. The clay fraction of the Clay-withflints consists of smectite, illite and quartz and is probably derived directly from the Chalk. Black san...
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