FAVORABLE LITHOFACIES TYPES AND GENESIS OF MARINE-CONTINENTAL TRANSITIONAL BLACK SHALE: A CASE STUDY OF PERMIAN SHANXI FORMATION IN THE EASTERN MARGIN OF ORDOS BASIN, NW CHINA

Favorable lithofacies types and genesis of marine-continental transitional black shale: A case study of Permian Shanxi Formation in the eastern margin of Ordos Basin, NW China

Based on core description, thin section identification, X-ray diffraction analysis, scanning electron microscopy, low-temperature gas adsorption and high-pressure mercury intrusion porosimetry, the shale lithofacies of Shan23 sub-member of Permian Shanxi Formation in the east margin of Ordos Basin was systematically analyzed in this study.The Shan2

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A National Pragmatic Safety Limit for Nuclear Weapon Quantities

This study determines the nuclear pragmatic limit where the direct physical negative consequences of nuclear weapons use are counter to national interests, by assuming all unknowns are conservatively optimistic.The only effect considered is nuclear winter (“nuclear autumn” in the low weapons limits) and the resultant effects on the aggr

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