摘要
梅城-寒婆坳地区位于湖南省涟邵煤田北段西部,受多期构造运动影响,区内广泛发育紧密线状褶皱和一系列由南东往北西挤压形成的逆冲断层。依据野外观测及地质资料分析了研究区构造几何形态,提出该区构造具有分带分段的特征,自北向南划分为北、中、南三个构造区带,自西向东分为西、中、东三个带。北段主体构造线方向为NE向,构造样式以叠瓦状逆冲断层为主;中段主体断层走向由NNE转为近SN向,以褶皱为主,推覆断裂为辅,局部发育白垩系红层;南段构造转为SN向,为一东翼被破坏的向斜。
The Meicheng-Hanpoao area is situated in western north sector of the Lianshao coalfield, Hunan Province. The area has been impacted by multistage tectonic processes, widely developed compact linear folds and a series of thrusts formed by SE-NW com- pression. Based on field observation and geological data, analyzed geometry of structures in study area, considered that the structures have sectorial and zonal features. From north to south can be divided into north, middle and south three structural sectors and from west to east into west, middle and east three zones. The main lineament of the north sector is NE; structural pattern is mainly imbricated thrusts. The strike of main faults in the middle sector is NNE turning into near SN; structural pattern is mainly folds with nappe and de- veloped Cretaceous red beds locally. The lineament of the south sector is turning into SN, a syncline with destructed east limb.
出处
《中国煤炭地质》
2016年第1期1-5,12,共6页
Coal Geology of China
基金
中国地质调查局南方缺煤省份研究课题
湖南省梅城-寒婆坳重点预测区煤炭资源调查评价(12120113074500)
关键词
逆冲推覆构造
控煤作用
分段分带性
梅城-寒婆坳地区
thrust tectonics
coal-controlling function
sectorial and zonal features
Meicheng-Hanpoao area
