| 中上扬子地区五峰组沉积环境的再认识 |
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| 引用本文： | 肖传桃,李建明,郭成贤.中上扬子地区五峰组沉积环境的再认识[J].四川地质学报,1996(4). |
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| 作者姓名： | 肖传桃 李建明 郭成贤 |
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| 作者单位： | 江汉石油学院地质系 |
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| 摘 要： | 通过对中上扬子地区五峰期海平面变化、沉积特征、生态特征和沉积速率等的分析，认为五峰组页岩段形成于海平面上升时期，属深海沉积。首次提出观音桥段形成于深海环境中，并属深海等深流沉积。并识别出三种等深岩相类型，即砂质等深岩相、泥质等深岩相和生物局等深岩相，它们均呈巨型条带状分布于中上扬子地区。
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| 关 键 词： | 海平面变化，沉积速率，深海环境，五峰组 |
REUNDERSTANDING OF SEDIMENTARY ENVIRONMENT OF THE WUFENG FORMATION IN MID-UPPER YANGTZE AREA |
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| Xiao Chuantao,Li Jianming and Guo Chengxian.REUNDERSTANDING OF SEDIMENTARY ENVIRONMENT OF THE WUFENG FORMATION IN MID-UPPER YANGTZE AREA[J].Acta Geologica Sichuan,1996(4). |
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| Authors: | Xiao Chuantao Li Jianming and Guo Chengxian |
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| Institution: | Jianghan Petroleum Institute |
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| Abstract: | Based on the sea level change,sedimentary and ecologic features and sedimentary rate of the Wufeng Formation,it is believed that the Shale Memberof the Wufeng Formation is deep-sea sediments which were formed in rising period of sea level. This paper puts forward that the Guanyingqiao Member of the Wufeng Formation is deep-sea contourite sediments.Finally, three types of contourites factes i. e. sandy, muddy and bioclastic contourites factes are recognized. They occur in the form of gigantic belts within mid-upper Yangtze Area. |
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| Keywords: | sea level change sedimentary rate deep-sea environment Wufeng Formation |
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