广东曲仁煤田滑覆构造特征及找煤预测

印支至燕山早期,由于扬子板块与华南板块碰撞③],使研究区北部九峰———诸广山一带相对南部曲仁煤田为隆起区,致使该区岩层从北往南顺坡滑移。首先在当冲组至龙潭组不含煤段中形成顺层滑动的F01主滑面。之后,受近南北向挤压应力继续作用,使滑覆构造总体同步褶皱,形成一系列轴向近东西的褶皱构造,同时北部的九峰—诸广山一带再次显著隆起,岩层又顺坡滑移形成F02,造成壶天灰岩大面积滑覆在D-T1地层之上。据此提出了预测找煤区。

Features of Decollement in Quren Coalfield of Guangdong Province and Prediction of Coal

During the early time from Indosinian movement to yanshan movement,because of Collision between yangtze plate and southern China plate made Jiufeng-Zhuguangshan zone of Northern research area uplift relative to Quren Coalfield of southern research area,and made the rocks sliding along the slope from north to south,At first formed the F01 sliding face along the beds in the no coal-bearing member from Dangchong formation to Longtan formation ,and then because of continued compressive stress near south to north direction,made the whole of decollement folded synchronously and formed a series of folds,near east to west direction of axes.Meanwhile,Jiufeng-Zhuguangshan Zone uplift again,and the rocks also sliding again along the slope formed F02 sliding face,and made Hutian limestone covered widely on the strata of D-T1.In view of the above put forward the prediction area of coal.