摘要
同沉积构造在法国塞文煤盆地表现为盆内断层、盆缘断层及褶曲变形,发育在盆内斯蒂芬期含煤岩系中的几个主要同沉积正(逆)断层不但在空间上局部控制了碎屑体和厚煤层的分布形态、厚度大小,而且在时间上完成了正(逆)构造反转,盆缘断层控制了盆地自身的几何形态及其岩相古地理分布的格局,它们活动的先后及强度的差异导致盆地沉降中心或沉积中心和富煤带的侧向迁移,使盆地整体的构造格架发生了由半地堑→地堑→新型式的半地堑的转化,在不同的演化时期,盆内盆缘断层活动方式的改变或活动强度的变化对盆地周围古构造应力场在斯蒂芬期所发生的90°的旋转给予了积极的响应。
The Stephanian Cevennes coal basin is located at the edge of the France Massif Central, and has been studied for 100 years. This work is to emphasize sedimentary dynamics , synsedimentary tectonics in their relation to basin tectonic activity. Sedimentary infilling was controlled by the early tectonics. Distribution of main clastic deposits, thick coal seams and migration of depocenters were controlled by faulted basin internal faults, and border faults. Normal or reverse activity of each fault was related to its direction in relation to the stress field direction. It is thus possible to infer an interpretation taking into account a relation of the stress field as suggested by Bonijoly et al. (1984), who described three compression phases through Stephanian: N-S,NW-SE, E-W.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1993年第2期129-138,共10页
Earth Science-Journal of China University of Geosciences
关键词
煤盆地
断层
应力场
煤系
沉积构造
Cevennes, coal basin, Stephanian, syndepositional fault, stress field.
