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2013, 32(2) 331-336 DOI:
ISSN: 1004-5589 CN: 22-1111/P |
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Organic geochemical characteristics of dark mudstone in Upper Permian Linxi Formation from Northeast Inner Mongolia��China |
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CHEN Chen-1, PENG Xiao-Lei-1, HONG Xue-2, LUO Chen-3 |
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1�� College of Earth Sciences��Jilin University��Changchun 130061��China; 2�� Northeast Oil Bureau of China Petroleum �� Chemical Enterprise��Changchun 130062��China; 3�� Jilin Institute of Geological Sciences��Changchun 130021��China |
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Abstract��
Through geological exploration��typical profile measuring��sampling and experimental analysis��we confirmed the Upper Permian Linxi Formation as the main horizon containing dark mudstone in Northeast Inner Mongolia�� Research of organic petrology and organic geochemistry reveals that the TOC value of the dark mudstone is 0. 45% �� 3. 55%; averaging 1. 09%; its organic matter type is II1 �� II2 in category; vitrinite reflectance of 82% samples is ranging in 2%�� 4%��and it falls into high to over-mature evolution stage�� With the high organic abundance�� large thickness and the wide distribution��the Linxi Formation in Northeast Inner Mongolia is potential in hydrocarbon source rocks��with high potential of gas generating�� |
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Keywords��
Upper Permian
Linxi Formation
source rock
organic geochemistry
Inner Mongolia
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