高校地质学报Issue(3)：513-519,7.
黔西南贞丰中-上三叠统竹杆坡组微相与沉积环境演化
Microfacies and Depositional Environment Evolution of the Middle-Upper Triassic Zhuganpo Formation in Zhenfeng, Southwestern Guizhou
摘要
Abstract
Aiming at understanding the Middle-Late Triassic drowning of the Yangtze carbonate platform, this paper analyzes the microfacies of the Middle-Upper Triassic Zhuganpo Formation in Zhenfeng area, Southwestern Guizhou and discusses its depositional environment evolution. Using standard microfacies type methods of Flügel, nine microfacies including laminated bindstone, peloidal packstone, micritic limestone, bioclastic wackestone, encrinite packstone, intraclastic-ooid-bioclastic grainstone, lump-bioclastic wackestone, bioclastic wackestone-pelagic, and micritic limestone-pelagic are recognized. The ordered combination and stratigraphic distribution of these 9 microfacies show that they were formed during the rapid transition from tidal flat to carbonate platform margin environments, and the prolonged deep shelf and basin environments. The analysis of sea-level changes of the Zhuganpo Formation indicates that they were different from the main part of Yangtze Platform, but their third-order cycles and second-order cycles were briefly concordant with global sea-level changes.关键词
微相/沉积环境演化/竹杆坡组/黔西南Key words
microfacies/depositional environment evolution/Zhuganpo Formation/Southwestern Guizhou分类
天文与地球科学引用本文复制引用
王建坡,程龙,曾雄伟..黔西南贞丰中-上三叠统竹杆坡组微相与沉积环境演化[J].高校地质学报,2013,(3):513-519,7.基金项目
中国地质调查局“华南地史生物辐射期生态系统重建研究”项目（1212011120148）和“关岭生物群特征及其环境演化研究”项目（1212010611603）联合资助 （）
