辽宁北部秀水地区中侏罗统地层的厘定及其地质意义

The determination of the middle Jurassic strata in Xiushui area, northern Liaoning Province, and its geological significance

摘要: 通过开展油气基础地质调查，对分布于辽宁北部秀水河子一带的含煤岩系进行了钻孔岩心资料、岩性组合和古生物化石特征的研究。结果表明，该套含煤岩系地层时代为中侏罗世，可以与辽宁西部地区的海房沟组对比。该套地层的厘定为研究区构造演化、油气地质勘探寻找中侏罗统烃源岩层提供了重要的基础地质资料。

Abstract: Through basic geological investigation of oil and natural gas, the authors studied the data of drill holes, lithologic assembly and paleontology fossils for a coal-bearing rock formation distributed along the Xiushui River. The result indicates that the geological age of the coal-bearing rock formation is Middle Jurassic, and the stratigraphic horizon is correlated with Haifanggou Formation in western Liaoning Province. The confirmation of the geological age of this coal-bearing rock formation offers important information for studying tectonic evolution and searching for the bed of source rock in the prospecting for oil and natural gas.