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1 研究区古地理、地质背景及地理位置 (a) 晚瓜德鲁普世全球古地理图[40]；(b) 研究区地理位置图（http://bzdt.ch.mnr.gov.cn/）；(c) 华南扬子北缘孤峰组分布、同沉积断裂展布[10,42]及剖面位置[6,43,44,45,46,47,48,49,50,51,52]

Fig. 1 Palaeogeography, geological setting and geographical location of the study area (a) Late Guadalupian palaeogeography of the world[40]; (b) Location of the study area in South China（http://bzdt.ch.mnr.gov.cn/）; (c) Distribution of Gufeng Formation, syndepositional faults[10,42] and sampling locations[6,43,44,45,46,47,48,49,50,51,52] in the Northern Margin of Yangtze area, South China