中下扬子北缘中二叠统孤峰组层状硅质岩沉积环境、成因及硅质来源探讨

赵振洋, 李双建, 王根厚

Discussion on Sedimentary Environments,Origin and Source of Middle Permian Gufeng Formation Bedded Cherts in theNorthern Margin of the Middle-Lower Yangtze Area

Zhenyang Zhao, Shuangjian Li, Genhou Wang

图7 孤峰组典型剖面及地理位置 (a)华南晚瓜德鲁普世古地理图[55]；(b)安徽省巢湖平顶山剖面孤峰组地层柱状图及火山灰产出深度[95]

Fig. 7 Representative section and location of Gufeng Formation (a) Late Guadalupian palaeogeographical reconstructions of South China[55]；(b) Stratigraphic column and the volcanic ash beds depth in the Gufeng Formation at the Pingdingshan Section in Chaohu City, Anhui Province[95]