平庄盆地充填沉积特征和聚煤规律

根据地层和构造形迹发育特点，简述了平庄盆地诞生、成长及消亡的演化历史。从岩性、粒度分析、垂向层序、沉积断面结构、砂砾岩体几何形态等方面论述了盆地晚中生代充填沉积相的５种类型、各沉积相的空间配置关系；并进一步论述了盆地含煤地层——下白里统古园组、元宝山组的沉积环境。指出了聚煤构造、沉积环境拉煤的规律及找煤远景区段。

FILLING-SEDIMENTARY CHARACTERISTICS AND COAL-FORMING REGULATIONS OF PINGZHUANG BASIN

ased on the situations of strata and the natures of geological structure,the evoluting history of the birth, growth and death of pingzhuang basin are explained. According to the characteristics of the lithology,grain size analysis,vertical bed succession,structure of sedimentary interupting-plane and geometric forms of granulite body,the five filling--sedimentary factes of late Mesozoic era of the basin are discussed,i. e.lake, lake side fan delta,lake side delta, alluvial fan and river. And the spatial relationship of every face are given out. The sedimg.ntary enviroments of Xingyuan Group and Yuanbaoshan Group of lower Cretaceous period are sure. Finally, the regulations of structure--controlling and sedimentary e nvirome nt-cotrolling on coal forming and coal--prospecting regions are point out.