Caledonian Structural Characteristics and Mechanism in Hunan-Jiangxi-Guangxi Provinces

• 责任者：Hao Yi (Key Lab. of Submarine Geosciences and Prospecting Technique ; MOE ; College of Marine Geoscience ; Ocean University of China ; Qindao 266100 ; China) ; Li Sanzhong
• 刊名：Geotectonica et Metallogenia
• 出版年：2010
• 卷期：34(2)
• 关键词：构造变形 ; tectonic deformation ; 湖南 ; Hunan Province ; 江西 ; Jiangxi Province ; 广西 ; Guangxi
• 页码：p.166-180
• 图表：11 illus., 56 refs.
• 分类号：0300
• issnNo：ISSN1001-1552
• isbnNo：CN44-1595/P

This paper selects some regions with many typical Lower Paleozoic strata and intensive Caledonian orogeny. By the description and analysis of the folds and fractures in these regions, it shows that the E-W-striking Cambrian fold belts in the Damingshan-Dayaoshan area were caused by the Late Cambrian-Early Ordovician nappe thrusting and pushing of the Yunkai Block from south to north. However, the NE-NNE-striking fold belts of Lower Paleozoic strata in the Yuanbaoshan-Yuechengling area and Hunan-Jiangxi border area were caused by the Late Ordovician-Early Silurian collision between the Cathaysian Block and the Yangtze Block along the Chenzhou-Lingwu fault zone. Moreover, this shortening was neither related to ocean-subduction nor continent-continent collisional event, but the intracontinental orogenesis. The Caledonian Movement was gradually propagated from south to north at early stage and from east to west at late stage, and the deformation strength increased from south to north.oft-com:office:office" />