Sedimentary Facies and Palaeogeography of the Evaporates in the Middle-Upper Yangtze Area

• 责任者：Men Yupeng (Chengdu Institute of Geology and Mineral Resources ; Chengdu 610081 ; China) ; Xu Xiaosong
• 刊名：Sedimentary Geology and Tethyan Geology
• 出版年：2010
• 卷期：30(3)
• 关键词：蒸发岩 ; evaporites ; 岩相古地理 ; lithofacies paleogeography ; 扬子地区 ; Yangtze Region
• 页码：p.58-64
• 图表：6 illus., 11 refs.
• 分类号：0603
• issnNo：ISSN1009-3850
• isbnNo：CN51-1593/P

The evaporates as the cap rocks of the Early Paleozoic marine oil and gas accumulation occur on a wide range of scales and in tremendous thickness in the central-upper Yangtze area, and are assigned to the Longwangmiaoan and Maozhuangian-Zhangxian strata to the east of Chengdu in Sichuan, north of Zunyi in Guizhou and west of the Wuling Mountains in Hunan and Guizhou provinces. The features of tectonics, paleogeography and sedimentary facies are responsible for the restricted, enclosed or semi-enclosed tectonic-paleogeographic settings, and thus are favorable for the deposition of the evaporates in the study area.