carboniferous to permian rift 石炭二叠纪裂谷
late carboniferous to early permian 晚石炭世至早二叠世
Quantity Simulation to Carboniferous-Permian Petroleu 武清凹陷石炭系
Carboniferous: of, belonging to, or denoting a geologic division of the Paleozoic Era following the Devonian and preceding the Permian.
石炭纪的，石炭系的：(属于或表示)地质上的一个分段，即紧跟着泥盆纪而早于二叠纪的古生代的。
The Carboniferous-Lower Permian source rocks are high to very high in maturity, with a wide distribution, great thickness, high content of organic material and better variety.
石炭系—下二叠统烃源岩广泛分布，厚度大、有机质含量丰富，处于高成熟—过成熟阶段，为现实烃源岩。
Jurassic coal resources in Datong coal-field will close to exhausted, and Carboniferous-Permian coal resources in Datong coal-field will become target of large-scale development.
大同煤田侏罗系煤炭资源临近枯竭，石炭二叠纪煤系将成为大规模开发对象。
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