Carbono-Permian coal series石炭-二叠纪煤系 Hydrocarbon generation and evolution of Carbono-Permian coal series from the Well Su-50 in the Wuqing Sag,Central Hebei ...
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区内石炭—二叠纪煤系具有良好的煤型气及一定的煤层气潜力，中、下侏罗统和下白垩统暗色泥岩类是最具生油潜力的烃源岩系。
Permo Carboniferous coal series have relative good coal gas potential, dark mudstones in lower Jurassic, lower part of Middle Jurassic and lower Cretaceous are the best source rocks.
河北南部石炭、二叠纪煤系中发育了多种类型的古土壤。
Many kinds of paleosoils develop in the coal measures of Carboniferous and Permian in southern Hebei, China.
中国北方石炭二叠纪和侏罗纪煤系中普遍产出一种可塑性极高的软质粘土，又称木节土，其矿物组成以高岭石为主。
A kind of high plasticity soft-clay, also called kibushi clay, is widely deposited in Carboniferous-Permian and Jurassic coal-bearing strata in northern China.
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