The source rocks of dark mudstone, coal and carboniferous mud stone are thicker in the east and thinner in the west in their thickness.

 
  • 岩性主要为暗色泥岩、煤和碳质泥岩。最有利的烃源岩为二叠系的太原组和山西组。有机质丰度高、类型好。
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