The Sedimentologic-Geotectonic Evolution in the Jiangsu-Zhejiang-Anhui Region

作     者：Xia Bangdong and Lu Hongbo Department of Earth Sciences, Nanjing University, Nanjing, Jiangsu Liu Linqun 

作者机构：Department of Earth Sciences Nanjing University Nanjing Jiangsu 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：1989年第63卷第2期

页      面：127-137页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 081803[工学-地质工程] 07[理学] 08[工学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0816[工学-测绘科学与技术] 

主　　题：Ordovician sedimentary accumulated Jiangsu Anhui northeast tectonic Yangtze sandstone margin 

摘      要：The Yangtze plate, extending from east to west in southern China, was formed about 800 Ma ago. Since the Sinian, two aulacogens trending east-northeast and connected at the east ends, have been initiated in the Jiangsu-Zhejiang-Anhui region on the east margin of the plate with a sedimentary sequence up to 10,000 m in thickness. At a later stage of sedimentologic evolution, flysch and molasse were produced. The flyseh was accumulated in the Late Ordovician, when the two aulacogens became bays that opened to the east; the elastic materials were derived from the Yangtze oldland on the northern and southern sides of the basins. The molasse was accumulated from the terminal Late Ordovician to the Middle Ordovician; the clastie materials came from an uplifted orogenic belt in the east. This indicates that a major change in the tectonic pattern of the basins has taken place.