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| DOI | 10.1016/j.tecto.2023.229957 |
| Paleogeographic and tectonic evolution of Mesozoic Qiangtang basins (Tibet) | |
| Ma, Anlin; Hu, Xiumian; Garzanti, Eduardo; Boudagher-Fadel, Marcelle; Xue, Weiwei; Han, Zhong; Wang, Ping | |
| 发表日期 | 2023 |
| ISSN | 0040-1951 |
| EISSN | 1879-3266 |
| 卷号 | 862 |
| 英文摘要 | Reconstructing the Mesozoic paleotectonic and paleogeographic evolution of marine Qiangtang basins is essential for understanding the evolution of diverse Tethyan oceanic seaways and pre-Cenozoic mountain building in the Tibetan Plateau, with significant implications for hydrocarbon exploration. The geological knowledge of these basins is, however, largely incomplete. Here we illustrate new geological mapping, stratigraphic, structural, sedimentological, and provenance data collected along a >40-km-long, well exposed crosssection of the Biluoco fold-thrust belt in South Qiangtang, together with a compilation of regional data from the Qiangtang, Amdo, and Hoh-Xil terranes. We also provide refined biostratigraphy and chronostratigraphy of the exposed successions in the Biluoco type area. Newly achieved information indicates that the North Qiangtang and South Qiangtang basins evolved independently during the Mesozoic. The South Qiangtang basin started to subside by the Late Triassic and closed by the Late Jurassic. In contrast, sedimentation in the North Qiangtang basin commenced in the latest Early Jurassic and ended in the latest Jurassic. The Qiangtang basins received sediments from volcanic rocks exposed in the central Qiangtang and Hoh-Xil terranes since the Late Triassic, whereas Paleozoic strata in the Central Qiangtang mountain range were the primary source of detritus for the North Qiangtang basin in the early Middle Jurassic and for South Qiangtang basin in the Late Triassic and Middle Jurassic. Middle to Late Triassic volcanism and convergence associated with the closure of Paleo-Tethys within the Hoh-Xil and central Qiangtang terranes resulted in the topographic uplift of the central and northern Qiangtang regions. The Jurassic development of Qiangtang basins and their final inversion were controlled by the dynamics of the northward-subducting Bangong-Nujiang oceanic slab, microcontinent accretion to South Qiangtang, and Lhasa/Qiangtang collision. |
| 关键词 | Qiangtang sedimentary basinsProvenance analysisDetrital -zircon geochronologyTethys OceanForaminifera biostratigraphy |
| 英文关键词 | U-PB GEOCHRONOLOGY; HIGH-MG ANDESITES; NORTHERN TIBET; PROVENANCE ANALYSIS; INTRAOCEANIC ARC; LHASA-QIANGTANG; BASEMENT ROCKS; SUBDUCTION; TETHYS; CHINA |
| WOS研究方向 | Geochemistry & Geophysics |
| WOS记录号 | WOS:001035777200001 |
| 来源期刊 | TECTONOPHYSICS
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/283228 |
| 作者单位 | Nanjing University; University of Milano-Bicocca; University of London; University College London; Chengdu University of Technology; Nanjing Normal University |
| 推荐引用方式 GB/T 7714 | Ma, Anlin,Hu, Xiumian,Garzanti, Eduardo,et al. Paleogeographic and tectonic evolution of Mesozoic Qiangtang basins (Tibet)[J],2023,862. |
| APA | Ma, Anlin.,Hu, Xiumian.,Garzanti, Eduardo.,Boudagher-Fadel, Marcelle.,Xue, Weiwei.,...&Wang, Ping.(2023).Paleogeographic and tectonic evolution of Mesozoic Qiangtang basins (Tibet).TECTONOPHYSICS,862. |
| MLA | Ma, Anlin,et al."Paleogeographic and tectonic evolution of Mesozoic Qiangtang basins (Tibet)".TECTONOPHYSICS 862(2023). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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