石油勘探与开发2011，Vol.38Issue(4)：400-408,9.
四川盆地东部上石炭统黄龙组沉积体系及其演化
Depositional systems and evolution of the Upper Carboniferous Huanglong Formation in the eastern Sichuan Basin
摘要
Abstract
New research on basic geology has been done for Upper Carboniferous carbonate lithologic gas pools in the Huanglong Formation in the eastern Sichuan Basin. Based on the development characteristics of terrigenous clastic deposit and the development location of suspending gravels with some psephicity, the transgression direction and tidal depositional system distribution are deduced. It is believed that, two transgression channels were developed in southeast of Yunyang and northwest of Dazhou in the area, two tidal-flat depositional systems in Chongqing-Wanzhou and southeast of Dazhou respectively were formed, and a suit of complete type-I sequence composed of lowstand systems tract (C2h1), transgressive systems tract (C2I12) and early highstand systems tract (C2h1) was developed. Sedimentary microfacies features of each member of the Huanglong Formation were delineated finely. In the middle stage of late Carboniferous, transgressive systems tract was developed in eastern Sichuan, where shallow beach and algal dolomite-flat microfacies were developed, which are favorable for the development of carbonate lithologic traps. In contrast, in the early and late stages of late Carboniferous, lowstand systems tract and highstand systems tract were developed, respectively, where shallow beach microfacies were poorly developed, which limited the large scale development of carbonate lithologic traps.关键词
四川盆地东部/黄龙组/碳酸盐岩/沉积体系/沉积微相Key words
eastern Sichuan Basin/ Huanglong Formation/ carbonate rock/ depositional system/ sedimentary microfacies分类
能源科技引用本文复制引用
李伟,张志杰,党录瑞..四川盆地东部上石炭统黄龙组沉积体系及其演化[J].石油勘探与开发,2011,38(4):400-408,9.基金项目
中国石油科技项目“四川盆地石炭系油气地质综合研究与有利区带优选”(2008D-0704-04) （2008D-0704-04）
