摘要
涟邵煤田已初步查明的滑来峰有25块之多,它们多发育在测水组及其上、下地层之中,这是由于该岩层的软弱层(泥质岩+煤层)所占比例较大(>50％)的缘故。归纳诸滑来峰的特征,其形成机理有三种:其一为后根部顺层滑移,当滑脱面由浅变深时切层,中部大体顺层滑移,至前缘又有切层现象的经典滑覆构造;其二为与断层相关的滑来峰,它是在断层挤压状态结束以后出现的伸展体制中,断层下盘在重力作用下迁就地形下滑的结果;其三为与复杂的倒转、平卧褶皱相关的滑来峰,近似于近代滑坡形成的机制。
As many as 25 nappe outliers have been preliminary determined in Lianshao coal-field.Theywere developed mostly in Ceshui Formation and its overlying or underlying strata.This phenomenon was result-ed from a high percentage(more than 50％)of soft rocks(coal and shale)in the strata.According to thecharacteristics,there are three formation mechanisms:1)Classical overlap glides;2)Fault—related outliers and3)Ouliers related to complex overfolds and recumbent folds.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
1993年第3期12-15,共4页
Coal Geology & Exploration
关键词
飞来峰
煤田
地质构造
成因
nappe outlier
mechanism
Lianshao coal-field
