Tethyan geodynamics
文献类型：期刊论文
| 作者 | Wu FuYuan1,2; Wan Bo2; Zhao Liang1,2; Xiao WenJiao2; Zhu RiXiang2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2020 |
| 卷号 | 36期号:6页码:1627-1674 |
| 关键词 | Tethys One-way drifting and convergence Slab pull Back-arc spreading Mantle plume |
| ISSN号 | 1000-0569 |
| DOI | 10.18654/1000-0569/2020.06.01 |
| 英文摘要 | Tethys is a giant and long-lived oceanic system between what once was Gondwana in the south and what has become Laurasia in the north. Its evolution can be broadly represented by the Proto-, Paleo-, and Neo-Tethys oceans, formed in the Early Paleozoic, Late Paleozoic, and Mesozoic, respectively. The final oceanic closure in the Cenozoic resulted in formation of the Alps, the Turkish-Iranian Plateau, and the Himalayan-Tibetan Plateau, representing the development of elevated topography within the tropical-to-subtropical climate belts. The Proto-Tethys formed by the first rifting of the northern Gondwana margin at ca. 500Ma, and the blocks drifted northward and collided with Tarim and North China, and formed the Proto-Tethyan orogeny at ca. 440 similar to 420Ma, with a wide Longmucuo-Shuanghu ocean located to the south. This scenario is comparable with the Appalachian-Caledonian orogeny between the Gondwana-derived Avalonian terrane and Laurentia and Baltic. Northward subduction of the Paleo-Tethys along the LongmucuoShuanghu trench made opening of the previously closed Kuangxiwa-Anemaqen Ocean at ca. 380Ma and spreading of the Jingshajiang-Ailaoshan Ocean as a back-arc basin. During the Late Paleozoic, the western Paleo-Tethys (Rheic Ocean) was manifested by collision of Africa with Europe along the Variscan orogenic belt at 360 similar to 330Ma; whereas in the east, the Paleo-Tethyan oceans among the North China, South China, and Indochina closed simultaneously at ca. 250Ma, with formation of the Cathaysian continent. Together with Laurasia to the north, Gondwana to the south, and the Variscan orogen to the west, a residual Paleo-Tethys ocean was trapped, and the final eustatic regression took place in the Late Triassic-Early Jurassic. Meanwhile, the northern Gondwanan margin resumed rifting with a series of blocks to form the Neo-Tethyan Ocean, which was subsequently closed in the Cenozoic. The formation of the Chinese continent is variably contributed by the Proto-, Paleo-, and Neo-Tethyan orogenies, and formed the world well-known Tethyan metallogenic province. The extensive and long-lived passive margin sedimentation in tropical-to-subtropical climates helped form tremendous reserves of oil and gas. Tethyan paleogeography and paleotopography have influenced global climate and environmental change from deep time to the present. Especially, the oceanic subductions of the Proto-Tethy, Paleo-Tethys and Neo-Tethys match well with the transition of the Earth climate from the greenhouse to the icehouse in the Phanerozoic. The above synthesis indicates that the Tethyan evolution is characterized by northward drift of the rifted continental blocks from Gondwana, and subsequently collision with Eurasia continuously throughout Phanerozoic time. Such northward drifting and subduction strongly suggests that the slab pull is a dominant geodynamic force of plate movement, and the role of mantle plume as a driving force needs further investigation. |
| WOS关键词 | ZIRCON U-PB ; EARLY PALEOZOIC OROGENESIS ; HF ISOTOPIC CONSTRAINTS ; CENTRAL CHINA IMPLICATIONS ; LATE JURASSIC OCEAN ; TRUONG SON TERRANE ; SOUTH CHINA ; TECTONIC EVOLUTION ; SUBDUCTION INITIATION ; PALEOMAGNETIC CONSTRAINTS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000562482600001 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/97656]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Wu FuYuan |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu FuYuan,Wan Bo,Zhao Liang,et al. Tethyan geodynamics[J]. ACTA PETROLOGICA SINICA,2020,36(6):1627-1674. |
| APA | Wu FuYuan,Wan Bo,Zhao Liang,Xiao WenJiao,&Zhu RiXiang.(2020).Tethyan geodynamics.ACTA PETROLOGICA SINICA,36(6),1627-1674. |
| MLA | Wu FuYuan,et al."Tethyan geodynamics".ACTA PETROLOGICA SINICA 36.6(2020):1627-1674. |
入库方式： OAI收割
来源：地质与地球物理研究所
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