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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
Zheng, Rongguo1,2; Li, Jinyi1; Xiao, Wenjiao2,3,4
2019-07-01
Source PublicationJOURNAL OF THE GEOLOGICAL SOCIETY
ISSN0016-7649
Volume176Issue:4Pages:755-770
AbstractThe 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.
DOI10.1144/jgs2018-231
Funding OrganizationNational 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
WOS KeywordSTRENGTH ELEMENT ENRICHMENT ; ASIAN OROGENIC BELT ; HIGH-MG ANDESITES ; PALEOZOIC CRUSTAL GROWTH ; SLAB-WINDOW ; MAGNESIAN ANDESITES ; WEST JUNGGAR ; ISLAND-ARC ; NW CHINA ; CHEMICAL CLASSIFICATION
Language英语
Funding ProjectNational 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]
Funding OrganizationNational 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
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000474687600010
PublisherGEOLOGICAL SOC PUBL HOUSE
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/92682
Collection岩石圈演化国家重点实验室
Corresponding AuthorZheng, Rongguo
Affiliation1.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
Recommended Citation
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.
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