山东省西南部(包括巨野、济宁、兖州、滕县、枣庄等煤田)是中国重要的煤产地之一。煤田的上部覆盖着较厚的第四系松散沉积物,以往依据岩心样品和古生物化石研究含煤地层及上覆地层,由于采样范围有一定的局限,代表性差,岩相和古生物相的分析不够准确,因而对地层的划分与对比也就不够细致。 Southwest Shandong Province (including Juye, Jining, Yanzhou, Tengxian, Zaozhuang and other coal fields) is one of China’s major coal producing areas. In the past, coalfield strata and overburden strata were studied based on core samples and paleontology fossils. Due to some limitation of sampling range, poor representativeness and insufficient analysis of lithofacies and palaeontology Accurate, so the division and comparison of the stratigraphy is not detailed enough.