Long-lived low Th/U Pacific-type isotopic mantle domain: Constraints from Nd and Pb isotopes of the Paleo-Asian Ocean mantle
文献类型：期刊论文
| 作者 | Liu, Xijun1,5,6; Xu, Ji-Feng8; Castillo, Paterno R.4; Xiao, Wenjiao3,5; Shi, Yu1,6; Zhang, Zhiguo1; Wang, Xuan-Ce2; Ao, Songjian3; Wang, Baohua1,6; Hu, Rongguo1,6 |
| 刊名 | EARTH AND PLANETARY SCIENCE LETTERS
 |
| 出版日期 | 2021-08-01 |
| 卷号 | 567页码:13 |
| 关键词 | Pacific and Indian mantle domains Paleo-Asian Ocean Paleo-Pacific Ocean ophiolite Pb isotope |
| ISSN号 | 0012-821X |
| DOI | 10.1016/j.epsl.2021.117006 |
| 英文摘要 | The presence of Pacific-type and Indian-type mid-ocean ridge (MORB) isotopic source domains in the upper mantle is a clear manifestation of global-scale mantle compositional heterogeneities. The Indiantype mantle domain is a long-lived feature that can be traced back to, at least, the Palaeozoic Tethyan mantle domain. Few temporal constraints currently exist, however, regarding the longevity of Pacifictype mantle domain. The extinct Paleo-Asia Ocean (PAO), a subsidiary ocean of the Panthalassic Ocean that formed during the breakup of the Rodinia supercontinent in Mesoproterozoic to Neoproterozoic, can provide a solution to this dilemma. Here, we report the first complete geochemical and Sr, Nd and high-precision Pb isotopic data set for representative mafic rock samples from ophiolites representing remnants of the PAO basement ranging in age from 275 to 624 Ma to constrain the composition of their mantle provenance. Data suggest that the sub-PAO mantle has a similar long time-integrated, high Sm/Nd ratio as the global depleted upper mantle, but also shows typical Pacific MORB-like Pb isotopic compositions with lower Pb-207/Pb-204(t) and Pb-208/Pb-204(t) for given Pb-206/Pb-204(t) ratios, and low radiogenic Pb-208*/Pb-206*, indicating a long time-integrated, low Th/U ratio. Thus, the Pacific-type mantle domain, like the Indian-type mantle domain, is a long-lived secular mantle domain that can be traced back to early Paleozoic or even to the Neoproterozoic. Data further indicate that the Nd and Pb isotopic distinction between such two large-scale and long-term mantle domains is due to the different evolutionary and tectonic histories of the circum-Pacific (PAO, Paleo- and modern Pacific) and sub-TethysIndian oceanic mantle realms. Our results indicate that the high Sm/Nd and low Th/U ratio of Pacific-type mantle domain most likely are an inherited, long-standing intrinsic feature of the depleted upper mantle derived from the Earth's primordial mantle with less contamination of continental materials. In contrast, the large-scale and long-lived Indian-type mantle heterogeneity is produced by plate tectonic-driven continental material circulation in the upper mantle. Such a genetic link between plate tectonics and mantle chemical geodynamics is crucial to our understanding of how the Earth system works. (C) 2021 Elsevier B.V. All rights reserved. |
| WOS关键词 | DAXINGANLING OROGENIC BELT ; TECTONIC EVOLUTION ; BREAK-UP ; BACK-ARC ; OPHIOLITE ; TETHYAN ; GEOCHRONOLOGY ; GEOCHEMISTRY ; RODINIA ; MORB |
| 资助项目 | National Key Research and Development Project of China[2017YFC0601200] ; National Natural Science Foundation of China[92055208] ; National Natural Science Foundation of China[41772059] ; National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[41822204] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS)[XDB18020203] ; Key Research Program of Frontier Sciences of CAS[QYZDJ-SSW-SYS012] ; CAS "Light of West China" Program[2018-XBYJRC-003] ; CAS "Light of West China" Program[2017-XBQNXZ-B-013] ; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology[MGQNLM201901] ; China-Pakistan Joint Research Center on Earth Sciences |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000659467000017 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; Key Research Program of Frontier Sciences of CAS ; Key Research Program of Frontier Sciences of CAS ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; China-Pakistan Joint Research Center on Earth Sciences ; China-Pakistan Joint Research Center on Earth Sciences ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; Key Research Program of Frontier Sciences of CAS ; Key Research Program of Frontier Sciences of CAS ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; China-Pakistan Joint Research Center on Earth Sciences ; China-Pakistan Joint Research Center on Earth Sciences ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; Key Research Program of Frontier Sciences of CAS ; Key Research Program of Frontier Sciences of CAS ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; China-Pakistan Joint Research Center on Earth Sciences ; China-Pakistan Joint Research Center on Earth Sciences ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; Key Research Program of Frontier Sciences of CAS ; Key Research Program of Frontier Sciences of CAS ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; China-Pakistan Joint Research Center on Earth Sciences ; China-Pakistan Joint Research Center on Earth Sciences |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/102058]  |
| 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 | Xu, Ji-Feng; Castillo, Paterno R. |
| 作者单位 | 1.Guilin Univ Technol, Coll Earth Sci, Guangxi Key Lab Hidden Metall Ore Deposits Explor, Guilin 541004, Peoples R China 2.Yunnan Univ, Sch Earth Sci, Kunming 650500, Yunnan, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 4.UCSD, Scripps Inst Oceanog, La Jolla, CA 92093 USA 5.Chinese Acad Sci, Xinjiang Res Ctr Mineral Resources, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China 6.Guilin Univ Technol, Collaborat Innovat Ctr Explorat Nonferrous Met De, Guilin 541004, Peoples R China 7.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China 8.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Xijun,Xu, Ji-Feng,Castillo, Paterno R.,et al. Long-lived low Th/U Pacific-type isotopic mantle domain: Constraints from Nd and Pb isotopes of the Paleo-Asian Ocean mantle[J]. EARTH AND PLANETARY SCIENCE LETTERS,2021,567:13. |
| APA | Liu, Xijun.,Xu, Ji-Feng.,Castillo, Paterno R..,Xiao, Wenjiao.,Shi, Yu.,...&Song, Yujia.(2021).Long-lived low Th/U Pacific-type isotopic mantle domain: Constraints from Nd and Pb isotopes of the Paleo-Asian Ocean mantle.EARTH AND PLANETARY SCIENCE LETTERS,567,13. |
| MLA | Liu, Xijun,et al."Long-lived low Th/U Pacific-type isotopic mantle domain: Constraints from Nd and Pb isotopes of the Paleo-Asian Ocean mantle".EARTH AND PLANETARY SCIENCE LETTERS 567(2021):13. |
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来源：地质与地球物理研究所
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