沈阳阳,吕大炜,张之辉

• 1:山东科技大学地球科学与工程学院

摘要(Abstract)：

运用传统沉积学、层序地层学理论知识，通过野外实地观测和钻井资料分析，对东胜地区延安组进行了层序地层划分。识别出两个三级层序(层序Ⅰ、层序Ⅱ),三个沉积体系域(低位体系域、湖侵体系域、高位体系域)。在延安组识别出两种沉积相——曲流河和湖泊三角洲。同时对延安组的煤层进行显微组分定量统计，研究显示研究区煤相主要为潮湿森林沼泽相。研究区构造稳定，煤相的垂向演化主要受湖平面波动的影响，而湖平面的波动受气候约束，显示气候是煤相演化的主要控制因素。

关键词(KeyWords)： 东胜煤田;延安组;层序地层;显微组分;煤相

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目“华北东部晚石炭—早二叠世煤系沉积记录对全球低纬度沉积古气候研究的启示”(41972170);国家自然科学基金项目“鄂尔多斯盆地中—下侏罗统延安组煤系沉积记录定量古气候重建”(42102127);; 国家重点研究计划重点专项“喀斯特型铝土矿形成过程与成矿模式”(2022YFC2903402)

作者(Author): 沈阳阳,吕大炜,张之辉

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