南盘江地区晚二迭世沉积环境模式及构造控制

据晚二迭世沉积相展布和各相带特征分析,南盘江地区晚二迭世可分为大陆、滨海·亚浅海和浅到半深海沉积区,相应地发育了两种类型的碳酸盐台地,台地边缘生物礁和深水海槽相沉积。沉积海盆的上述特性,同区域板块构造发展史有关,并直接受区内古断裂活动的控制。从本区的构造活动性提出了石油勘探中值得注意的问题。

THE SEDIMENTARY ENVIROMENT PATTERN AND ITS TECTONIC CONTROL OF LATE PERMIAN AGE IN NANPANJANG RIVER AREA

On the basis of analysing the development and distribution of the sedimentary facies of late Permian age and their characteristics, it is thought that the sedimentary enviroments of late Permian in Nanpangjang river area consist of continental, shore, sub-shallow sea and shatlow-bathyal ones. Correspondingly, two kinds of earbonate platforms,the bioherm and the deep-water trough facies sedimentation are developed. The above characteristics of the sedimentary sea basin are concerned with the development history of plate tectonics in the area and directly controlled by encient faulting within this area.According to the tectonic activities,some equestions have been posed which must be paid attention to in petroleum exploration.