The First Geological Map of Intrusive Rocks in Dabie Orogenic Belt and Its Adjacent Areas and Explanatory Notes
详细信息
- 责任者：Chen Ling (Faculty of Earth Sciences ; China University of Geosciences ; Wuhan 430074 ; China) ; Ma Changqian
- 刊名：Geological Bulletin of China
- 出版年：2012
- 卷期：31(1)
- 关键词：侵入体 ; intrusions ; 地质图 ; geologic maps ; 大别山 ; Dabie Mountains
- 页码：p.13-19
- 图表：3 illus, 82 refs.
- 分类号：2100
- 出版序号：20130626
- issnNo：ISSN1671-2552
- isbnNo：CN11-4648/P
摘要
///In order to exchange the basic information obtained from the authors recent researches funded by the National Natural Science Foundation of China with other researchers, this paper presents the first geological map of intrusive rocks in Dabie orogenic belt and its adjacent areas (1∶500 000). The research shows that the Early Cretaceous intrusive bodies possess the majority of all the intrusive rocks, while Neoproterozioc and Early Paleozoic bodies are much less. Most of the Neoproterozioc intrusive bodies occur as stocks in southern Dabie, Hong’an area in western Dabie and northern Huaiyang area. The Early Paleozoic intrusive bodies are much smaller, constituting paired magmatic belts in south and north parts of Dabie orogenic belt. The Late Jurrassic intrusive bodies are mainly distributed in the lower and middle reaches of the Yangtze River . The Early Cretaceous intrusive bodies are widely spread, covering 47% of the total area of the orogenic belt. The Late Mesozoic magma is probably associated with the northwestward subduction of Paleo-Pacific plate underneath the South China block and subsequent extensional events.