Shanxian formation is old crevasse splay and old channel sedimentary of the Yellow river, and its propery is mainly fine silt and silt;

  • 单县组为黄河古决口扇、古河道沉积,岩性主要为细砂、粉砂;

  • 互联网摘选 2025-01-20 11:44:41

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