Age and petrogenesis of late Paleozoic granites from the northernmost   Alxa region, northwest China, and implications for the tectonic   evolution of the region

doi:10.1007/s00531-016-1297-0

CORC > 北京大学 > 地球与空间科学学院

	Age and petrogenesis of late Paleozoic granites from the northernmost Alxa region, northwest China, and implications for the tectonic evolution of the region
	Zhang, Wen ; Pease, Victoria ; Meng, Qingpeng ; Zheng, Rongguo ; Wu, Tairan ; Chen, Yan ; Gan, Lisheng
刊名	INTERNATIONAL JOURNAL OF EARTH SCIENCES
	2017
关键词	Granite Alxa Central Asia Orogenic Belt Paleozoic Tectonics A-TYPE GRANITES PHANEROZOIC CRUSTAL GROWTH ASIAN OROGENIC BELT S-TYPE GRANITES I-TYPE GRANITES ND-HF ISOTOPES SOUTHERN ALTAIDS TRACE-ELEMENT GEOCHEMICAL CHARACTERISTICS INNER-MONGOLIA
DOI	10.1007/s00531-016-1297-0
英文摘要	The Wudenghan, Huhetaoergai and Zhuxiaobuguhe plutons, northern Alxa region, in the southern Central Asia Orogenic Belt are dated by U-Pb zircon to 383 +/- 3, 356 +/- 3 and 286 +/- 2 Ma, respectively. The late Devonian Wudenghan monzogranite, a highly fractionated I-type granite with epsilon (Nd)(t) (-0.2 to -0.1) and very low (Sr-87/Sr-86) (t) (0.704719-0.706113), is from mantle-derived magmas and shows volcanic arc characteristics. The early Carboniferous Huhetaoergai granodiorite with medium-K calc-alkaline peraluminous characteristics represents a volcanic arc granite generated from partial melting of lower continental crust combined with mantle-derived input. The early Permian Zhuxiaobuguhe pluton, an unfractionated calc-alkaline granodiorite with moderately low epsilon (Nd)(t) (-2.0 to -1.1) and low (Sr-87/Sr-86) (t) (0.708370-0.708462), was likely derived from partial melting of the mafic lower crust of a paleo-volcanic arc and represents a post-collisional granite. Our revised tectonic evolution of the region includes (1) northward subduction of the oceanic crust represented by the Engger Us Ophiolitic Belt and formation of the late Devonian Wudenghan monzogranite, (2) northward subduction of the ocean between the Huhetaoergai and Zhusileng tectonic zones and the formation of the Huhetaoergai volcanic arc granite during the early Carboniferous and (3) the emplacement of the Zhuxiaobuguhe pluton in the early Permian during post-collisional extension.; National Natural Science Foundation of China [41372225, 41430210]; China Scholarship Council [2010601124]; Swedish Research Council; Knut and Alice Wallenberg Foundation; Department of Geological Sciences, Stockholm University; SCI(E); ARTICLE; 1; 79-96; 106
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/476352]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Zhang, Wen,Pease, Victoria,Meng, Qingpeng,et al. Age and petrogenesis of late Paleozoic granites from the northernmost Alxa region, northwest China, and implications for the tectonic evolution of the region[J]. INTERNATIONAL JOURNAL OF EARTH SCIENCES,2017.
APA	Zhang, Wen.,Pease, Victoria.,Meng, Qingpeng.,Zheng, Rongguo.,Wu, Tairan.,...&Gan, Lisheng.(2017).Age and petrogenesis of late Paleozoic granites from the northernmost Alxa region, northwest China, and implications for the tectonic evolution of the region.INTERNATIONAL JOURNAL OF EARTH SCIENCES.
MLA	Zhang, Wen,et al."Age and petrogenesis of late Paleozoic granites from the northernmost Alxa region, northwest China, and implications for the tectonic evolution of the region".INTERNATIONAL JOURNAL OF EARTH SCIENCES (2017).