首页 | 本学科首页   官方微博 | 高级检索  
     


The Sequence of Magmatic-Tectonic Events and Orogenic Processes of the Yanshan Belt, North China
Authors:DENG Jinfu  SU Shangguo  MO Xuanxue  ZHAO Guochun  XIAO Qinghiu  JI Guangyi  QIU Ruizhao  ZHAO Hailing  LUO Zhaohu  WANG Yang  LIU Cui China University of Geosciences  Beijing  and Key Laboratory of Lithospheric Tectonics  Lithoprobe Techniques  Ministry of Education of China
Abstract:This paper emphasizes that the interactive constraints of geology and isotopic dating is the best approach to construct the geological event sequence, and has compiled 106 data of reasonable isotopic ages for the igneous rocks of the Yanshan belt. We propose a sequence of mgmatic-tectonic events in the Jurassic-Cretaceous Yanshan orogen of North China. Five orogenic episodes are divided, (1) pre-and initial orogenic episode (Early Jurassic); (2) early orogenic episode (Middle Jurassic); (3) peak orogenic episode (Late Jurassic); (4) late orogenic episode (early Early Cretaceous), and (5) post-orogenic episode. Each episode is a short cycle, all of the orogenic processes construct a longer cycle, and they, in general, followed a counter-clockwise (ccw) PTt path. Finally, it is suggested that the Yanshanian movement was so intensive that the magmatism and tectonic deformation had involved all the lithosphere thickness and the late-Achaean-formed cratonic lithosphere had been significantly reworked.
Keywords:magmatic-tectomc event sequence   Yanshan belt   orogenic episodes and processes
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《《地质学报》英文版》浏览原始摘要信息
点击此处可从《《地质学报》英文版》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号