The Mesozoic Collage and Orogeny Process of Micro-blocks in Bangong-Nujiang Suture Zone, Tibetan Plateau

被引：0
|
作者：
Liu Y. [1 ,2 ]
Li S. [1 ,2 ]
Yu S. [1 ,2 ]
Cao X. [1 ,2 ]
Zhou J. [1 ,2 ]
Li Y. [1 ,2 ]
Wang Y. [1 ,2 ]
Xu L. [3 ]
Guo R. [1 ,2 ]
Zhou Z. [1 ,2 ]
机构：
[1] Key Lab of Submarine Geosciences and Prospecting Techniques, Institute for Advanced Ocean Study and College of Marine Geosciences, Ocean University of China, Qingdao, 266100, Shandong
[2] Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, Shandong
[3] Beijing Institute of Geological Engineering, Beijing
来源：
Geotectonica et Metallogenia | 2019年 / 43卷 / 04期
关键词：
Collage; Micro-blocks; Tibetan Plateau; Yanshanian;
D O I：
10.16539/j.ddgzyckx.2019.04.013
中图分类号：
学科分类号：
摘要：
The subduction and closure of the Bangong-Nujiang Ocean are recognized as significant events in the geotectonic evolution of Tibetan Plateau. This study focuses on the Mesozoic magmatic rocks, sedimentary strata, metamorphic and deformation features, and discusses their relation with the evolution of the Bangong-Nujiang Ocean in details. The Qiangnan-Baoshan, Lhasa, Nierong and Jiayuqiao micro-blocks rifted from the northern margin of the Gondwana as rifting-induced micro-blocks. The northern Lhasa micro-blocks was a product of the back-arc spreading of the Bangong-Nujiang Ocean, and evolved into an accretion-induced micro-blocks due to the southward subduction of the Bangong-Nujiang Ocean. All these micro-blocks collaged together as subduction-derived micro-blocks preserving in the orogenic belt. The Bangong-Nujiang Ocean experienced a complex and prolonged process of multiple collage and collision among micro-blocks during the Mesozoic period. This process may have started in the Late Jurassic and completed at the end of the Early Cretaceous to early Late Cretaceous. Both longitudinal and transverse diachronism occurred during the closure of the Bangong-Nujiang Ocean. The northward subduction of the Indus-Yarlung Zangbo Ocean is important to the closure of the Bangong-Nujiang Ocean, as well as the formation of the modern tectonic framework of Tibetan Plateau. © 2019, Science Press. All right reserved.
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页码：824 / 838
页数：14
相关论文
共 54 条
  • [1] Baxter A.T., Aitchison J.C., Zyabrev S.V., Radio larian age constraints on Mesotethyan ocean evolution, and their implications for development of the Bangong- Nujiang suture, Tibet, Journal of the Geological Society, 166, pp. 689-694, (2009)
  • [2] Chen W.W., Zhang S.H., Ding J.K., Zhang J.H., Zhao X.X., Zhu L.D., Yang W.G., Yang T.S., Li H.Y., Wu H.C., Combined paleomagnetic and geochronological study on Cretaceous strata of the Qiangtang terrane, central Tibet, Gondwana Research, 41, pp. 373-389, (2015)
  • [3] Chen Y., Zhu D.C., Zhao Z.D., Meng F.Y., Wang Q., Santosh M., Wang L.Q., Dong G.C., Mo X.X., Slab breakoff triggered ca. 113 Ma Magmatism around Xainza Area of the Lhasa Terrane, Tibet, Gondwana Research, 26, pp. 449-463, (2014)
  • [4] DeCelles P.G., Kapp P., Ding L., Gehrels G.E., Late Cretaceous to middle Tertiary basin evolution in the central Tibetan Plateau: Changing environments in response to tectonic partitioning, aridification, and regional elevation gain, Geological Society of America Bulletin, 119, pp. 654-680, (2007)
  • [5] Dewey J.F., Shackleton R.M., Chang C., The tectonic development of the Tibetan Plateau, Philoso Phical Transactions of the Royal Society, 327, pp. 379-413, (1988)
  • [6] Fan J.J., Li C., Liu Y.M., Xu J.X., Age and nature of the late Early Cretaceous Zhaga Formation, northern Tibet: Constraints on when the Bangong-Nujiang Neo- Tethys Ocean closed, International Geology Review, 57, pp. 342-353, (2015)
  • [7] Fan J.J., Li C., Wang M., Xie C.M., Reconstructing in space and time the closure of the middle and western segments of the Bangong-Nujiang Tethyan Ocean in the Tibetan Plateau, International Journal of Earth Sciences, 107, pp. 231-249, (2018)
  • [8] Fan J.J., Li C., Xie C.M., Wang M., Petrology Geochemistry and Geochronology of the Zhonggang Ocean Island Northern Tiber: Implications for the Evolution of the Bangongco-Nujiang Oceanic Arm of Neo-Tethys, International Geology Review, 56, pp. 1504-1520, (2014)
  • [9] Fan J.J., Li C., Xu J.X., Wang M., Petrology Geochemistry and Geological Significance of the Nadong Ocean Island Banggong-Nujiang Suture Tibetan Plateau, International Geology Review, 56, pp. 915-928, (2014)
  • [10] Guynn J.H., Kapp P., Pullen A., Gehrels G.E., Heizler M., Ding L., Tibetan basement rocks near Amdo reveal "missing" Mesozoic tectonism along the Bangong suture, central Tibet, Geology, 34, pp. 505-508, (2006)
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