Negative reversal structure and the fault - block type buried hills are very common in Palaeozoicgroup in Tongwang area of Dongying Sag.
负反转构造和断块型古潜山普遍存在于东营凹陷通王地区古生界之中。
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So the Late Palaeozoicgroup in ne China has tremendous potential for oil and gas resources, and should be an important new area for deep hydrocarbon exploration.