Late Carboniferous-early Permian arc magmatism in the south-western Alxa Tectonic Belt (NW China): Constraints on the late Palaeozoic subduction history of the Palaeo-Asian Ocean

doi:10.1002/gj.3348

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	Late Carboniferous-early Permian arc magmatism in the south-western Alxa Tectonic Belt (NW China): Constraints on the late Palaeozoic subduction history of the Palaeo-Asian Ocean
	Song, Dongfang 1,2; Xiao, Wenjiao 1,2,3,4; Collins, Alan 5; Glorie, Stijn 5; Han, Chunming 1,2,3
刊名	GEOLOGICAL JOURNAL
	2019-03-01
卷号	54 期号:2 页码:1046-1063
关键词	active continental margin Alxa late Carboniferous-early Permian magmatic rocks Palaeo-Asian Ocean zircon U-Pb-Hf
ISSN号	0072-1050
DOI	10.1002/gj.3348
英文摘要	The tectonic setting of the Alxa Tectonic Belt (ATB) during the late Palaeozoic is highly controversial. The nature and tectonic origin of the late Palaeozoic magmatism in the ATB are key to resolving the current controversy. This paper provides field, petrographic, geochemical, and zircon U-Pb-Hf isotopic data for the late Palaeozoic granitoids and volcanic rocks from the south-western ATB. The granitoids display a wide range of SiO2 contents from diorite, granodiorite, to granites, with widely distributed hydrous minerals such as hornblende and biotite. They are calc-alkaline to high-potassium calc-alkaline, metaluminous with an enrichment of light rare earth elements and large-ion lithophile elements (LILE), and a depletion of high-field-strength elements (HFSE). The presence of mafic-intermediate enclaves in the plutons suggests the role of crust-mantle interaction in generating the granitoids. The volcanic rocks show block-in-matrix structures in the field. They are dacite-porphyry and rhyolite and show calc-alkaline characteristics with an enrichment of LILE and a depletion of HFSE. Laser ablation inductively coupled plasma mass spectrometry zircon U-Pb dating shows that the granitoids and enclaves crystallized during similar to 317-287Ma and the dacite porphyry formed at similar to 295Ma. Hf-in-zircon isotopic compositions reveal predominately positive epsilon(Hf) (t) values and Neoproterozoic T-DM(C) ages for the magmatic rocks, indicating mixing between mantle-derived magma and Precambrian basement during their genesis. The diagnostic field, geochemical data, and isotopic data imply these rocks were generated in a subduction-related active continental margin setting. The presence of A(2)-type granite indicates an extensional environment resulted from slab rollback in a retreating accretionary context can best interpret the large-scale late Carboniferous-early Permian magmatism in the ATB. Our new data, combined with published data, imply that a large active continental margin existed in the Beishan, Alxa, and the northern margin of the North China Craton, due to the south-dipping subduction of the Palaeo-Asian Ocean (PAO) in the late Palaeozoic. Therefore, our data suggest that the PAO did not close until after the early Permian.
资助项目	National Natural Science Foundation of China[41230207] ; National Natural Science Foundation of China[41402196] ; National Natural Science Foundation of China[41730210] ; National Natural Science Foundation of China[41672219] ; China Scholarship Council[201504910051] ; China Postdoctoral Science Foundation project[2015 T80133] ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences[QYZDJ-SSW-SYS012] ; National Key R&D Program of China[2017YFC0601206]
WOS关键词	A-TYPE GRANITES ; S-TYPE GRANITES ; U-PB AGES ; NORTH CHINA ; ACCRETIONARY OROGENS ; INNER-MONGOLIA ; HF ISOTOPES ; I-TYPE ; ZIRCON ; BLOCK
WOS研究方向	Geology
语种	英语
出版者	WILEY
WOS记录号	WOS:000463807400025
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Postdoctoral Science Foundation project ; China Postdoctoral Science Foundation project ; China Postdoctoral Science Foundation project ; China Postdoctoral Science Foundation project ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; 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 ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Postdoctoral Science Foundation project ; China Postdoctoral Science Foundation project ; China Postdoctoral Science Foundation project ; China Postdoctoral Science Foundation project ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; 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 ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Postdoctoral Science Foundation project ; China Postdoctoral Science Foundation project ; China Postdoctoral Science Foundation project ; China Postdoctoral Science Foundation project ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; 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 ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Postdoctoral Science Foundation project ; China Postdoctoral Science Foundation project ; China Postdoctoral Science Foundation project ; China Postdoctoral Science Foundation project ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; 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
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/91279]
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	Song, Dongfang
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China 3.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Res Ctr Mineral Resources, Urumqi, Peoples R China 5.Univ Adelaide, Dept Earth Sci, Ctr Tecton Resources & Explorat TRaX, Adelaide, SA, Australia
推荐引用方式 GB/T 7714	Song, Dongfang,Xiao, Wenjiao,Collins, Alan,et al. Late Carboniferous-early Permian arc magmatism in the south-western Alxa Tectonic Belt (NW China): Constraints on the late Palaeozoic subduction history of the Palaeo-Asian Ocean[J]. GEOLOGICAL JOURNAL,2019,54(2):1046-1063.
APA	Song, Dongfang,Xiao, Wenjiao,Collins, Alan,Glorie, Stijn,&Han, Chunming.(2019).Late Carboniferous-early Permian arc magmatism in the south-western Alxa Tectonic Belt (NW China): Constraints on the late Palaeozoic subduction history of the Palaeo-Asian Ocean.GEOLOGICAL JOURNAL,54(2),1046-1063.
MLA	Song, Dongfang,et al."Late Carboniferous-early Permian arc magmatism in the south-western Alxa Tectonic Belt (NW China): Constraints on the late Palaeozoic subduction history of the Palaeo-Asian Ocean".GEOLOGICAL JOURNAL 54.2(2019):1046-1063.