北疆地区二叠系广泛分布，中二叠统上段和下二叠统上段是主要的烃源岩发育段。

Permian is broadly distributed in Nor th Xinjiang area, and source rocks are principally developed in upper member of Middle Per-main and upper member of Lower Permian.

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北疆地区二叠系广泛分布，中二叠统上段和下二叠统上段是主要的烃源岩发育段。

Permian is broadly distributed in Nor th Xinjiang area, and source rocks are principally developed in upper member of Middle Per-main and upper member of Lower Permian.

youdao