Characters of Later Jurassic Yinshan Intraplate Orogeny Belt——Evidence from <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:PlaceName w:st="on">Daqingshan</st1:PlaceName> <st1:PlaceType w:st="on">Mountains</st1:PlaceType>, <st1:place w:st="on">Inner Mongolia</st1:place> <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>

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weight: bold" lang=EN-US>Characters of Later Jurassic Yinshan Intraplate Orogeny Belt——Evidence from Daqingshan Mountains, Inner Mongolia

详细信息

责任者：Du Jumin (Department of Earth Science ; Nanjing University ; Nanjing 210093 ; China) ; Zhang Qinglong
刊名：Acta Geologica Sinica
出版年：2009
卷期：83(7)
关键词：板内构造 ; intraplate tectonics ; 大青山 ; Daqing Mountains
页码：p.910-922
图表：5 illus., 1 table, 1 plate, 51 refs.
分类号：0300
issnNo：ISSN0001-5717
isbnNo：CN11-1951/P

摘要

The Daqingshan Mountains belongs to the south section of Yinshan Mountains, the typical intraplate orogenic belt. The lack of the large scale low-angle thrust faults and interference of large-scale plutons to early structural evolution make it an ideal locality to understand the characters and processes of the Yinshan intraplate orogeny. Field measurement, geometrical and kinematical analysis of structures of west Daqing Shan shows that the Yinshan intraplate orogeny is of two basal features. One is that the crystalline basement was widely involved in the Mesozoic tectonic deformation as thrust nappes and basement-involved folds, and the other is the pre-exist structures were universally rejuvenated and controlled the distribution of succeeding sediments and the development of reverse and thrust faults. These features imply that the crystalline basement is the bearing subsistence during the formation of Yinshan orogeny and controls overlayer’s deformation, implying that the intraplate orogeny resulted from horizontal compression stress.

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