A late-Carboniferous to early early-Permian subduction-accretion complex;in Daqing pasture, southeastern Inner Mongolia: Evidence of northward;subduction beneath the Siberian paleoplate southern margin

doi:10.1016/j.lithos.2013.07.008

	A late-Carboniferous to early early-Permian subduction-accretion complex;in Daqing pasture, southeastern Inner Mongolia: Evidence of northward;subduction beneath the Siberian paleoplate southern margin
	Liu, Jianfeng 1; Li, Jinyi ; Chi, Xiaoguo 1; Qu, Junfeng ; Hu, Zhaochu 2; Fang, Shu 3; Zhang, Zhong 3
刊名	LITHOS
	2013
卷号	177 页码:285-296
关键词	Paleo-Asian Ocean Late-Carboniferous Subduction-accretion complex Southeast Inner Mongolia Tectonic setting
ISSN号	0024-4937
DOI	10.1016/j.lithos.2013.07.008
英文摘要	A subduction-accretion complex is identified from previously defined late-Carboniferous and early-Permian strata in Daqing pasture, southern Xiwuqi, Inner Mongolia. The subduction-accretion complex is composed of a matrix of siltstone and exotic blocks of bioclastic limestone, pillow basalt, foliated basalt, chert and asbestos. The pillow basalt possesses the geochemical characteristics of mid-ocean ridge basalt (N-MORB), whereas the foliated basalt displays the geochemical characteristics of island arc basalt (IAB), indicating that these basalts are of different origins. U-Pb (zircon) dating indicates that the foliated basalt formed in the late-Carboniferous (314.5 to 318.4 Ma) and the biodastic limestone formed in the early early-Permian. Combined with regional geological data, the subduction-accretion complex and coeval calc-alkaline granitic belt to the north constitute the essential elements of the late-Carboniferous to early early-Permian subduction zone on the southern margin of the Siberian paleoplate. The zircon epsilon(Hf)(t) values of the foliated basalt are positive (+14.4 to +23.9), suggesting that this basalt originated directly from depleted mantle. The temporal-spatial distribution of the subduction-accretion complex and ophiolite belts in southeastern Inner Mongolia indicates that there was significant lateral crustal growth on the southern margin of the Siberian paleoplate in the late Paleozoic. (c) 2013 Elsevier B.V. All rights reserved.
学科主题	构造地质学
WOS关键词	ASIAN OROGENIC BELT ; PHANEROZOIC CRUSTAL GROWTH ; XILIN-GOL COMPLEX ; TRACE-ELEMENT ANALYSES ; ND ISOTOPIC EVIDENCE ; U-PB AGES ; TECTONIC ; IMPLICATIONS ; CONTINENTAL GROWTH ; VOLCANIC-ROCKS ; HEGENSHAN OPHIOLITE
WOS研究方向	Geochemistry & Geophysics ; Mineralogy
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000324721000018
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40110]
专题	中国地质科学院地质研究所
作者单位	1.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China. 2.Jilin Univ, Coll Earth Sci, Changchun 130061, Peoples R China. 3.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China. 4.Inner Mongolia Tenth Geol Mineral Explorat Inst, Chifeng 024005, Peoples R China.
推荐引用方式 GB/T 7714	Liu, Jianfeng,Li, Jinyi,Chi, Xiaoguo,et al. A late-Carboniferous to early early-Permian subduction-accretion complex;in Daqing pasture, southeastern Inner Mongolia: Evidence of northward;subduction beneath the Siberian paleoplate southern margin[J]. LITHOS,2013,177:285-296.
APA	Liu, Jianfeng.,Li, Jinyi.,Chi, Xiaoguo.,Qu, Junfeng.,Hu, Zhaochu.,...&Zhang, Zhong.(2013).A late-Carboniferous to early early-Permian subduction-accretion complex;in Daqing pasture, southeastern Inner Mongolia: Evidence of northward;subduction beneath the Siberian paleoplate southern margin.LITHOS,177,285-296.
MLA	Liu, Jianfeng,et al."A late-Carboniferous to early early-Permian subduction-accretion complex;in Daqing pasture, southeastern Inner Mongolia: Evidence of northward;subduction beneath the Siberian paleoplate southern margin".LITHOS 177(2013):285-296.