石油实验地质2011，Vol.33Issue(1)：22-27,6.
四川盆地南缘寒武系膏溶角砾岩的识别标志及勘探意义
Distinguishing indicators and prospect significance of Cambrian dissolved gypseous breccias in southern Sichuan Basin
摘要
Abstract
Dissolved gypseous breccias were discovered with gypseous rocks in the Cambrian surface out crops in Huocaoping region of Leibo County and Heima region of Ganluo County in the southern Sichuan Basin. According to profile analyses of the Cambrian, several dissolved gypseous breccias were found in Zhuazhuayan (13 layers, over 30 m thick), Changping (4 layers, 17. 5 m thick), Fandian (4 layers,over 20 m thick) and Sanhuichang (4 layers, 35 m thick). The dissolved gypseous breccias were divided into 2 types, including amaranth gypsum-bearing breccia mudstones and lark gypsum-dissolved breccia dolostones, with locally well preserved lamellar and flaser deposit structures. The breccias were gene rally 3 cm long and 2 cm wide. The compositions were micrite dolostones and the cements included clays and calcites. Initial rocks of the dissolved gypseous breccias were thythmically banding dolomitic gypse ous rocks, which could be compared with the Middle and Lower Cambrian gypseous rocks (10 lay ers 26. 9 m) from Well Dingshan 1. It is predicted that, from the southeast to the center of the basin,there exist thick gypseous rocks of lagoon facies.关键词
石膏/膏溶角砾岩/寒武系/油气勘探/四川盆地南缘分类
能源科技引用本文复制引用
彭勇民,高波,张荣强,张殿伟,孙冬胜,沃玉进,周雁,汪新伟,李双建..四川盆地南缘寒武系膏溶角砾岩的识别标志及勘探意义[J].石油实验地质,2011,33(1):22-27,6.基金项目
国家自然科学基金项目(40739904)资助. （40739904）
