Mid-Paleozoic ridge subduction in the Central Beishan of the southern Altaids: evidence from geochemical, Sr-Nd and zircon U-Pb-Hf-O isotopic data of Gongpoquan volcanic rocks
文献类型：期刊论文
| 作者 | Zheng, Rongguo1,2; Li, Jinyi1; Xiao, Wenjiao2,3,4 |
| 刊名 | JOURNAL OF THE GEOLOGICAL SOCIETY
 |
| 出版日期 | 2019-07-01 |
| 卷号 | 176期号:4页码:755-770 |
| ISSN号 | 0016-7649 |
| DOI | 10.1144/jgs2018-231 |
| 英文摘要 | The investigation of Mid-Paleozoic tectonics could constrain the relations of early and late Paleozoic subduction events in the southern Altaids and improve our understanding of the architecture of accretionary orogens. The Gongpoquan volcanic rocks are widespread in the Central Beishan and contain important information on the tectonics of the southern Altaids. Geochronological data constrain the eruptive time of the Gongpoquan volcanic rocks as early Silurian-early Devonian (434-411 Ma). The Gongpoquan andesites show similar geochemical characteristics to those of typical sanukitoids, including high MgO and compatible element concentrations, enrichments in large ion lithophile elements and light rare earth elements, and depleted isotopic compositions. The geochemical data show that the Gongpoquan andesites were generated through the partial melting of subducting sediments and subsequent melt-mantle peridotite interactions. The early Silurian basalts are Na-rich and exhibit high Nb/U and Nb/La ratios, an enrichment in high field strength elements and enriched isotopic compositions, making them akin to Nb-enriched basalts. Such Nb-enriched basalts should be derived from the melting of a mantle component similar to ocean island basalt in the mantle wedge. The early Devonian basalts are calc-alkaline, enriched in large ion lithophile elements and depleted in high field strength elements. They yield high Ba/Yb ratios and depleted isotopic compositions, indicating an origin via the partial melting of a depleted mantle wedge metasomatized by subduction-related fluids. Our data prove that the Paleo-Asian Ocean may still have been subducted during the Mid-Paleozoic. During this process, a spreading ridge was subducted beneath the Central Beishan, resulting in the opening of a slab window, which generated the observed 431-411 Ma sanukitoids and Nb-enriched basalts. |
| WOS关键词 | STRENGTH ELEMENT ENRICHMENT ; ASIAN OROGENIC BELT ; HIGH-MG ANDESITES ; PALEOZOIC CRUSTAL GROWTH ; SLAB-WINDOW ; MAGNESIAN ANDESITES ; WEST JUNGGAR ; ISLAND-ARC ; NW CHINA ; CHEMICAL CLASSIFICATION |
| 资助项目 | National Natural Science Foundation of China[41502214] ; National Natural Science Foundation of China[41572206] ; National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[41230207] ; National Key Research and Development Program of China from the Ministry of Science and Technology of China[2017YFC0601301] ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences[J1706] ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows[2015LH0049] ; China Postdoctoral Foundation[2016M590990] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB18020203] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-SYS012] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000474687600010 |
| 出版者 | GEOLOGICAL SOC PUBL HOUSE |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; China Postdoctoral Foundation ; China Postdoctoral Foundation ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; China Postdoctoral Foundation ; China Postdoctoral Foundation ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; China Postdoctoral Foundation ; China Postdoctoral Foundation ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; China Postdoctoral Foundation ; China Postdoctoral Foundation ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/92682]  |
| 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 | Zheng, Rongguo |
| 作者单位 | 1.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China 2.Chinese Acad Sci, Xinjiang Res Ctr Mineral Resources, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Rongguo,Li, Jinyi,Xiao, Wenjiao. Mid-Paleozoic ridge subduction in the Central Beishan of the southern Altaids: evidence from geochemical, Sr-Nd and zircon U-Pb-Hf-O isotopic data of Gongpoquan volcanic rocks[J]. JOURNAL OF THE GEOLOGICAL SOCIETY,2019,176(4):755-770. |
| APA | Zheng, Rongguo,Li, Jinyi,&Xiao, Wenjiao.(2019).Mid-Paleozoic ridge subduction in the Central Beishan of the southern Altaids: evidence from geochemical, Sr-Nd and zircon U-Pb-Hf-O isotopic data of Gongpoquan volcanic rocks.JOURNAL OF THE GEOLOGICAL SOCIETY,176(4),755-770. |
| MLA | Zheng, Rongguo,et al."Mid-Paleozoic ridge subduction in the Central Beishan of the southern Altaids: evidence from geochemical, Sr-Nd and zircon U-Pb-Hf-O isotopic data of Gongpoquan volcanic rocks".JOURNAL OF THE GEOLOGICAL SOCIETY 176.4(2019):755-770. |
入库方式： OAI收割
来源：地质与地球物理研究所
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