DOI: 10.1016/j.earscirev.2020.103275
论文题名: Cambrian–Triassic geodynamic evolution of central Qiangtang, Tibet: Comment
作者: Zeng L. ; Shi L.-Z.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2020
卷: 208 语种: 英语
中文关键词: Central Qiangtang
; Jinsa Paleo-Tethyan suture zone
; Shuanghu Paleo-Tethyan suture zone
; Tectonic reconstruction
; Tibetan Plateau
英文关键词: accretionary prism
; allochthon
; Cambrian
; collision zone
; geodynamics
; paleoceanography
; suture zone
; tectonic reconstruction
; Triassic
; China
; Qiangtang Block
; Xizang
英文摘要: We disagree on many basic aspects of the Cambrian–Triassic tectonic reconstruction of central Qiangtang, Tibet, proposed by Xu et al. (2020) (Earth-Science Reviews, v. 201, doi: https://doi.org/10.1016/j.earscirev.2020.103083), because their reconstructions are inconsistent with geological evidence. The allochthonous fragments in the accretionary complex of the Shuanghu suture zone should not be used as indicators of south Qiangtang geology. Furthermore, no evidence exists for repeated drift–collision between north and south Qiangtang along the Shuanghu suture zone from the Paleozoic to Triassic, because the Shuanghu Paleo-Tethys Ocean likely existed from the Cambrian to Triassic, as indicated by continuous ophiolitic rocks. No evidence supports the occurrence of north Qiangtang–Qaidam–Kunlun collision during the Middle Ordovician to early Silurian, because the northward subduction of the Anyemaqen–Kunlun–Muztagh Paleo-Tethyan branch between these two tectonic entities occurred from the Paleozoic to Triassic, as inferred from radiolarian-bearing ophiolitic rocks and coeval arc magmatism in the Kunlun block. In addition, there is no evidence for the North Qiangtang–South China collision during the late Carboniferous to early Permian, because the Jinsa Paleo-Tethyan oceanic branch was active at this time, as evidenced by the presence of radiolarian-bearing ophiolitic fragments in the suture zone. © 2020 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166319
Appears in Collections: 气候变化与战略
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作者单位: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China; Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, China
Recommended Citation:
Zeng L.,Shi L.-Z.. Cambrian–Triassic geodynamic evolution of central Qiangtang, Tibet: Comment[J]. Earth Science Reviews,2020-01-01,208