In these process of evolution, it deposited mainly hydrocarbon source rocks of lacustrine facies in the Early Cretaceous and secondary coal measures source rocks in Early-Middle Jurassic.

主要形成了下白垩统半深湖相烃源岩，其次为中下侏罗统煤系烃源岩。

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In these process of evolution, it deposited mainly hydrocarbon source rocks of lacustrine facies in the Early Cretaceous and secondary coal measures source rocks in Early-Middle Jurassic.

主要形成了下白垩统半深湖相烃源岩，其次为中下侏罗统煤系烃源岩。

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