Paleoproterozoic multiphase magmatism and metamorphism recorded in metamorphic basement rocks of the northern Altyn Tagh, southeastern Tarim Craton
文献类型：期刊论文
| 作者 | Wang, Zhong-Mei1,5; Han, Chun-Ming1,2,4; Xiao, Wen-Jiao1,4,5; Sakyi, Patrick Asamoah3 |
| 刊名 | PRECAMBRIAN RESEARCH
 |
| 出版日期 | 2020-08-15 |
| 卷号 | 346页码:25 |
| 关键词 | Bimodal association Metasedimentary rocks Paleoproterozoic magmatic-metamorphic events Northern Altyn Tagh Tarim Craton |
| ISSN号 | 0301-9268 |
| DOI | 10.1016/j.precamres.2020.105827 |
| 英文摘要 | The Paleoproterozoic is a pivotal time for understanding the geochronological framework of the Tarim Craton. Located at the southeastern margin of the Tarim Craton, the northern Allyn Tagh is the main region of exposed Paleoproterozoic magmatic and metamorphic rocks. These rocks are diverse, diachronous, and modified by multiphase tectonothermal events. In this study, we performed systematic analyses on the amphibolite, felsic gneisses, and metasedimentary rocks in the Aketashitage area, southeastern Tarim Craton, including petrography, mineral chemistry, and whole-rock geochemistry, as well as in-situ zircon U-Pb ages and Hf isotopes, to examine the Paleoproterozoic magmatic-metamorphic events in the northern Allyn Tagh. Results from our study indicate that geochemically, the amphibolite and felsic gneisses in the Aketashitage area resemble the typical bimodal associations of mafic and acidic volcanic rocks. In addition, felsic gneisses are characterized by high Sr and low Y contents, high Sr/Y and (La/Yb)(N) ratios, and indistinctive Eu anomalies, closely resembling high-SiO2 adakites derived from subducted basaltic slab-melt. The palimpsest textures and geochemical features of the Aketashitage metasedimentary rocks suggest that their protoliths are argillaceous rocks. The amphibolite from the study area has a metamorphic age of 1.96 Ga, and the felsic gneisses yield crystallization ages of 2.54-2.52 Ga. The major age peaks of metasedimentary rocks in the Aketashitage area, namely 2.72 Ga, 2.05 Ga, and 1.97 Ga, are remarkably consistent with the magmatic and/or metamorphic events in the same area. Furthermore, the minimum age peak of the studied metasedimentary rocks suggests a depositional age no earlier than 1.97 Ga. Geochemical and geochronological evidence from the exposed rock associations in the Aketashitage area suggest a subduction-related tectonic setting during the Paleoproterozoic. Our new data combined with the findings of previous studies indicate that Paleoproterozoic magmatism and metamorphism in the northern Altyn Tagh area are nearly synchronous, and that both are likely related to oceanic subduction. |
| WOS关键词 | ZIRCON U-PB ; ARCHEAN CONTINENTAL-CRUST ; LU-HF ISOTOPES ; NW CHINA ; DUNHUANG BLOCK ; GEOCHRONOLOGICAL EVIDENCE ; AQTASHTAGH AREA ; TRACE-ELEMENTS ; PRECAMBRIAN EVOLUTION ; GEOCHEMISTRY |
| 资助项目 | National Key R&D Program of China[2017YFC0601205] ; 973 Program[2014CB440801] ; National Natural Science Foundation[41702236] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000561242000020 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; 973 Program ; 973 Program ; 973 Program ; 973 Program ; National Natural Science Foundation ; National Natural Science Foundation ; National Natural Science Foundation ; National Natural Science Foundation ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; 973 Program ; 973 Program ; 973 Program ; 973 Program ; National Natural Science Foundation ; National Natural Science Foundation ; National Natural Science Foundation ; National Natural Science Foundation ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; 973 Program ; 973 Program ; 973 Program ; 973 Program ; National Natural Science Foundation ; National Natural Science Foundation ; National Natural Science Foundation ; National Natural Science Foundation ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; 973 Program ; 973 Program ; 973 Program ; 973 Program ; National Natural Science Foundation ; National Natural Science Foundation ; National Natural Science Foundation ; National Natural Science Foundation |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/97648]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 通讯作者 | Han, Chun-Ming |
| 作者单位 | 1.Chinese Acad Sci, State Innovat Acad Earth Sci, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 3.Univ Ghana, Dept Earth Sci, POB LG 58, Legon, Ghana 4.Xinjiang Res Ctr Mineral Resources, Urumqi 830011, Peoples R China 5.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 | Wang, Zhong-Mei,Han, Chun-Ming,Xiao, Wen-Jiao,et al. Paleoproterozoic multiphase magmatism and metamorphism recorded in metamorphic basement rocks of the northern Altyn Tagh, southeastern Tarim Craton[J]. PRECAMBRIAN RESEARCH,2020,346:25. |
| APA | Wang, Zhong-Mei,Han, Chun-Ming,Xiao, Wen-Jiao,&Sakyi, Patrick Asamoah.(2020).Paleoproterozoic multiphase magmatism and metamorphism recorded in metamorphic basement rocks of the northern Altyn Tagh, southeastern Tarim Craton.PRECAMBRIAN RESEARCH,346,25. |
| MLA | Wang, Zhong-Mei,et al."Paleoproterozoic multiphase magmatism and metamorphism recorded in metamorphic basement rocks of the northern Altyn Tagh, southeastern Tarim Craton".PRECAMBRIAN RESEARCH 346(2020):25. |
入库方式： OAI收割
来源：地质与地球物理研究所
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