Jurassic Paleomagnetism of the Lhasa Terrane-Implications for Tethys Evolution and True Polar Wander
文献类型：期刊论文
| 作者 | Ma, Yiming7,8,11; Wang, Qiang5,6,8; Wang, Huapei7; Wan, Bo1; Zhang, Shihong2; Deng, Chenglong1; Zheng, Dongyu3,4; Ren, Qiang3,4; Yang, Tianshui2; Wu, Dan11 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
 |
| 出版日期 | 2022-12-01 |
| 卷号 | 127期号:12页码:23 |
| 关键词 | Tibetan Plateau paleomagnetism subduction northward drift true polar wander |
| ISSN号 | 2169-9313 |
| DOI | 10.1029/2022JB025577 |
| 英文摘要 | The drift history of the Lhasa terrane from Gondwana to Asia plays a crucial role in understanding the Tethys evolution and true polar wander (TPW). However, few reliable paleomagnetic results from Jurassic strata are currently available for reconstructing its northward journey. We performed a combined paleomagnetic and geochronological study on Bima Formation strata in the Xigaze area. Combined with previous results from the Sangri area, our results reveal a paleolatitude of 8 +/- 4 degrees S at similar to 180 Ma for the reference point (29.3 degrees N, 90.3 degrees E). Along with other paleomagnetic results from the Triassic to Cretaceous, our new results suggest that the Lhasa terrane motion accelerated from similar to 2 cm/yr during similar to 220-180 Ma to similar to 17 cm/yr during similar to 180-170 Ma. Paleolatitude information of the North Qiangtang terrane and Tethyan Himalaya is calculated from paleopoles that meet five criteria, which include (a) structural control, (b) well-determined rock age, (c) stepwise demagnetizations, (d) a minimum of 25 specimens or 8 sites are contained, and (e) robust field or reversal tests are provided. Both terranes also show significant acceleration during their northward motion, which may be related to oceanic slab subduction. Thus, all Gondwana-derived microcontinents seem to share a significant acceleration during their northward motion. In addition, recent paleomagnetic results from volcanic rocks dated at similar to 155 Ma subdivide the overall northward motion during similar to 170-130 Ma into two stages, which include a southward drift during similar to 170-155 Ma followed by northward motion during similar to 155-130 Ma. These results support the fast Late Jurassic TPW during a similar to 10 Myr time span. Plain Language Summary The Tibetan Plateau is composed of the Qiangtang, Lhasa, and Himalaya terranes that originate from Gondwana, which was an ancient supercontinent located mainly in the southern hemisphere. How these terranes moved northward from Gondwana to Asia remains unclear due to poor paleolatitude constraints. We provide paleomagnetic evidence to show that the Lhasa terrane was located at similar to 8 degrees S at similar to 180 million years ago (Ma). Together with reliable paleomagnetic data from Late Triassic (similar to 237-201 Ma) limestones and Middle Jurassic (similar to 174-163 Ma) sandstones, our results suggest a significant acceleration during Lhasa's northward motion at similar to 220-170 Ma. Reliable paleolatitude data show significant accelerations of the Lhasa, North Qiangtang, and Tethyan Himalaya terranes during their northward journey, which may be related to oceanic slab subduction. These significant accelerations may be a common feature of these Gondwana-derived microcontinents. The drift history of the Lhasa terrane during similar to 170-130 Ma can be subdivided into a southward drift during similar to 170-155 Ma and a subsequent northward drift during similar to 155-130 Ma. The yoyo-like drift motion of the Lhasa terrane near the equator before and after similar to 155 Ma supports a fast Late Jurassic pole motion event (named true polar wander) during a similar to 10 Myr time span. |
| WOS关键词 | SOUTHERN TIBET EVIDENCE ; CRETACEOUS VOLCANIC-ROCKS ; INDIA-EURASIA COLLISION ; QIANGTANG TERRANE ; TECTONIC EVOLUTION ; NEO-TETHYS ; RED-BEDS ; EARLY SUBDUCTION ; GANGDESE BELT ; GREATER INDIA |
| 资助项目 | Second Tibetan Plateau Scientific Expedition and Research (STEP)[2019QZKK0702] ; National Natural Science Foundation of China[41802242] ; National Natural Science Foundation of China[42174089] ; National Natural Science Foundation of China[91855215] ; National Natural Science Foundation of China[42021002] ; National Natural Science Foundation of China[41874079] ; National Natural Science Foundation of China[42030205] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA2007030402] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA17010403] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB41010304] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000924572300001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | Second Tibetan Plateau Scientific Expedition and Research (STEP) ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/106814]  |
| 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 | Ma, Yiming |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China 2.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Beijing, Peoples R China 3.Chengdu Univ Technol, State Key Lab Oil & Gas Reservoir Geol, Chengdu, Peoples R China 4.Chengdu Univ Technol, Inst Sedimentary Geol, Chengdu, Peoples R China 5.CAS Ctr Excellence Deep Earth Sci, Guangzhou, Peoples R China 6.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 7.China Univ Geosci, Sch Geophys & Geomat, Paleomagnetism & Planetary Magnetism Lab, Wuhan, Peoples R China 8.Chinese Acad Sci, State Key Lab Isotope Geochem, Guangzhou Inst Geochem, Guangzhou, Peoples R China 9.Univ Utrecht, Dept Earth Sci, Utrecht, Netherlands 10.Guilin Univ Technol, Guangxi Key Lab Hidden Metall Ore Deposits Explor, Coll Earth Sci, Guilin, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Yiming,Wang, Qiang,Wang, Huapei,et al. Jurassic Paleomagnetism of the Lhasa Terrane-Implications for Tethys Evolution and True Polar Wander[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2022,127(12):23. |
| APA | Ma, Yiming.,Wang, Qiang.,Wang, Huapei.,Wan, Bo.,Zhang, Shihong.,...&Dekkers, Mark J..(2022).Jurassic Paleomagnetism of the Lhasa Terrane-Implications for Tethys Evolution and True Polar Wander.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,127(12),23. |
| MLA | Ma, Yiming,et al."Jurassic Paleomagnetism of the Lhasa Terrane-Implications for Tethys Evolution and True Polar Wander".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 127.12(2022):23. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。