In terms of molecular geochemistry indexes, the hydrocarbon source rocks both in lower Jurassic and middle Jurassic can be classified as lake facies and swamp facies.
根据分子地球化学指标，下侏罗统和中侏罗统烃源岩都可划分为湖相和沼泽相两类。
A number of suites of Carboniferous, middle-lower Jurassic and lower Cretaceous hydrocarbon source rocks were developed in the basin groups in the Paleo-Asian and Tethyan structural confluence area.
古亚洲与特提斯构造交汇带盆地群发育石炭系、侏罗系（中下统）、白垩系（下统）等多套烃源岩，具有厚度大、分布广、有机质丰度高的特点。
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.
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。
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