Process of Rifting and Collision along Plate Margins of the Qinling Orogenic Belt and Its Geodynamics

查看全文 作　　者：LIU [1]Shaofeng;ZHANG [2]Guowei

机构地区：[1]Earth Science and Resource Faculty, China University of Geosciences, Beijing 100083;[2]Northwest University, Xi'an 710069

出　　处：《Acta Geologica Sinica(English Edition)》索引1999年第73卷第3期,共14页

基　　金：supported by the National NaturalScience Foundation(Nos.49772119,49732080 and49290100). 摘　　要：The Qinling erogenic belt underwent complicated processes of rifting and collision, as shown by the coexistence of (1) ocean extension and plate margin rifting and (2) subduction of the frontal oceanic crust and extension of the rear plate margin. These resulted in a basin-mountain framework characterized by the coexistence of plates separated by the ocean basin and continental blocks demarcated by the rifting sea trough in the marginal region and the coexistence of subduction orogeny and ocean extension. Generally speaking, the plate marginal area between the North China plate and Yangtze plate continually rifted from north to south and the rifted micro-plates continually accreted northwards. This especial orogenic process was probably controlled by two events of deep mantle geody-namic adjustment and mantle plume activities, which occurred in the Shangdan suture belt and Mianlue suture belt from north to south respectively. 关键词：RIFT SUBDUCTION lateral ACCRETION vertical ACCRETION mantle plume

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Process of Rifting and Collision along Plate Margins of the Qinling Orogenic Belt and Its Geodynamics

参考文献(28)

引证文献(24)

耦合文献(94)

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