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Carboniferous tectonic incorporation of a Devonian seamount and oceanic crust into the South Tianshan accretionary orogen in the southern Altaids

文献类型：期刊论文

作者Abuduxun, Nijiati1,4,5,6; Windley, Brian F.3; Xiao, Wenjiao4,5,6; Zhang, Ji'en2; Chen, Yichao4; Huang, Peng5,6; Gan, Jingmin4,5,6; Sang, Miao5,6
刊名INTERNATIONAL JOURNAL OF EARTH SCIENCES
出版日期2021-09-20
页码19
ISSN号1437-3254
关键词South Tianshan Accretionary complex Altaids Geochronology Geochemistry
DOI10.1007/s00531-021-02109-6
英文摘要The southern Altaids is of critical significance for a better understanding of the orogenic architecture and continental growth in Central Asia. The tectonic setting of the South Tianshan, a typical Paleozoic accretionary orogen within the southern Altaids, is controversial. This study reports new structural relations, geochemistry, and geochronology of previously assigned Late Silurian-Early Devonian strata in the Karaghol area of the South Tianshan. The constituent rocks are pillow basalts, ribbon cherts, limestones, siliceous mudstones, and turbiditic sandstones. Field relations show that these rocks are characterized by fault-bound tectonic slices and melanges with typical block-in-matrix structures. The pillow basalts show N-MORB, E-MORB, and OIB geochemical fingerprints, and our new LA-ICP-MS zircon U-Pb dates indicate that the maximum eruption age of the OIB-type basalts was ca. 386 Ma, whereas the Maximum Depositional Ages (MDAs) of the turbiditic sandstones were ca. 369 Ma and 355 Ma. The age spectra of the detrital zircons, which define prominent peaks at ca. 370 Ma, ca. 420 Ma, ca. 770 Ma, ca. 960 Ma with subordinate Proterozoic ages, are a good match with the igneous ages of intermediate to felsic magmatism in the Yili-Central Tianshan arc. We conclude that the previously assigned Late Silurian-Early Devonian strata in the Karaghol area are mostly dismembered structural components and melanges that belonged to an accretionary complex of Late Devonian to Early Carboniferous age, into which fragments of a Late Devonian seamount along with South Tianshan oceanic crustal rocks were likely emplaced during north-dipping subduction in the Early Carboniferous. This well-documented accretionary orogen in the Chinese South Tianshan is a key constraint on the accretionary orogenesis of the southern Altaids.
WOS关键词LATE PALEOZOIC EVOLUTION ; CHINESE TIEN-SHAN ; PLATE STRATIGRAPHY ; CONTINENTAL GROWTH ; WESTERN TIANSHAN ; CENTRAL-ASIA ; NW CHINA ; COLLISIONAL TECTONICS ; SOUTHWESTERN TIANSHAN ; EASTERN TIANSHAN
资助项目National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[41962013] ; National Natural Science Foundation of China[42072269] ; National Key R & D Program of China[2017YFC0601206] ; Western Young Scholars Program of the CAS[2017-XBQNXZ-B-013] ; Key Research Program of Frontier Sciences of the CAS[QYZDJ-SSW-SYS012] ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences[131551KYSB20200021]
WOS研究方向Geology
语种英语
出版者SPRINGER
WOS记录号WOS:000698105100001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R & D Program of China ; National Key R & D Program of China ; Western Young Scholars Program of the CAS ; Western Young Scholars Program of the CAS ; Key Research Program of Frontier Sciences of the CAS ; Key Research Program of Frontier Sciences of the CAS ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R & D Program of China ; National Key R & D Program of China ; Western Young Scholars Program of the CAS ; Western Young Scholars Program of the CAS ; Key Research Program of Frontier Sciences of the CAS ; Key Research Program of Frontier Sciences of the CAS ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R & D Program of China ; National Key R & D Program of China ; Western Young Scholars Program of the CAS ; Western Young Scholars Program of the CAS ; Key Research Program of Frontier Sciences of the CAS ; Key Research Program of Frontier Sciences of the CAS ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R & D Program of China ; National Key R & D Program of China ; Western Young Scholars Program of the CAS ; Western Young Scholars Program of the CAS ; Key Research Program of Frontier Sciences of the CAS ; Key Research Program of Frontier Sciences of the CAS ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/102687]  
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Xiao, Wenjiao
作者单位1.Xinjiang Univ, Sch Geol & Min Engn, Xinjiang Key Lab Geodynam Proc & Metallogen Progn, Urumqi 830046, Peoples R China
2.Chinese Acad Sci, State Key Lab Lithospher Evolut, Inst Geol & Geophys, Beijing, Peoples R China
3.Univ Leicester, Sch Geog Geol & Environm, Leicester, Leics, England
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Xinjiang Res Ctr Mineral Resources, Xinjiang Key Lab Mineral Resources & Digital Geol, Urumqi 830011, Peoples R China
6.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China
推荐引用方式
GB/T 7714		 Abuduxun, Nijiati,Windley, Brian F.,Xiao, Wenjiao,et al. Carboniferous tectonic incorporation of a Devonian seamount and oceanic crust into the South Tianshan accretionary orogen in the southern Altaids[J]. INTERNATIONAL JOURNAL OF EARTH SCIENCES,2021:19.
APA Abuduxun, Nijiati.,Windley, Brian F..,Xiao, Wenjiao.,Zhang, Ji'en.,Chen, Yichao.,...&Sang, Miao.(2021).Carboniferous tectonic incorporation of a Devonian seamount and oceanic crust into the South Tianshan accretionary orogen in the southern Altaids.INTERNATIONAL JOURNAL OF EARTH SCIENCES,19.
MLA Abuduxun, Nijiati,et al."Carboniferous tectonic incorporation of a Devonian seamount and oceanic crust into the South Tianshan accretionary orogen in the southern Altaids".INTERNATIONAL JOURNAL OF EARTH SCIENCES (2021):19.

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来源：地质与地球物理研究所

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