| 大巴山侏罗纪叠加褶皱与侏罗纪前陆 |
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| 关键词:superposed folding paleostress field Jurassic foreland Daba Mountain |
| 基金项目:中石化南方公司资助项目 |
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| 摘要: |
| Jurassic Superposed Folding and Jurassic Foreland in the Daba Mountain, Central China |
| The Daba Mountain, a unique convex-southern bow-like folding belt in NWW-SEE striking Qinling Orogen, is obviously uncoordinated with the Qinling orogenic belt in tectonic characteristics. Researches indicate that the Dabashan bow-like folding belt was formed during late Jurassic and superposed on Triassic folds, and hence it does not belong to Qinling Triassic Orogen. The new evidence reveals that the intra-continent subduction in Dabieshan, Dabashan and other places in central China occurred in Late Jurassic. TheⅠtype superposed folding and deformation was developed on the western side of Daba Mountain with a crossing interference style, in which nearly NS-striking Jurassic folds were superposed on nearly EW-striking Triassic folds. On such a basis, Jurassic foreland can be reconstructed along the bow-like folding belt in the Daba Mountain. The authors believe that the Jurassic intra-continent orogenic movement was an extensive event in eastern China, even in eastern Asia. |
| DONG Shu-wen,HU Jian-min,SHI Wei,ZHANG Zhong-yi,LIU Gang.2006.Jurassic Superposed Folding and Jurassic Foreland in the Daba Mountain, Central China[J].Acta Geoscientica Sinica,27(5):403-410. |
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