摘要
皖北地区是我国重要的煤炭基地,含煤地层层序地层学研究对于深部煤炭资源预测至关重要。通过对两淮煤田典型钻孔剖面的层序地层分析与对比,根据区域不整合面及局部侵蚀不整合、生物带缺失、海侵方向及沉积体系转换面、分流河道下切谷冲刷面等识别出7个层序界面。根据这些界面,结合初始海泛面和最大海泛面,将皖北地区石炭、二叠系划分为了6个三级层序和12个体系域。
The coalfield in north of Anhui province is one of the biggest coal bases of China. It is very important to study the stratigraphic sequence of coal-bearing strata for predicting and exploring coal resources. Through the analysis and comparison of coalfield typical drilling hole section sequence stratum in Huainan-huaibei coalfield, 7 kinds of sequence boundaries were recognized based on regional unconformity surface, local erosion unconformity, transgressive direction and sedimentary system transformation, distributary channel incised valley erosion surface. According to the interface, combined with the initial flooding surfaces and the sea surface the 6 third order sequences and 12 system tracts are distinauished in C-P coal-bearing strata in north Anhui.
出处
《煤炭与化工》
CAS
2015年第5期16-19,共4页
Coal and Chemical Industry
基金
河北自然科学基金(D2015402029)
关键词
两淮煤田
层序界面
体系域
Huainan-huaibei coalfield
sequence boundary
, system tracts
