Geochronology and geochemistry of the granites from the Mengku iron deposit, Altay Mountains, northwest China implications for its tectonic setting and metallogenesis

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	Geochronology and geochemistry of the granites from the Mengku iron deposit, Altay Mountains, northwest China implications for its tectonic setting and metallogenesis
	Yang, F (Yang, F.)5; Mao, J (Mao, J.); Liu, F (Liu, F.); Chai, F (Chai, F.); Guo, Z (Guo, Z.); Zhou, G (Zhou, G.); Geng, X (Geng, X.); Gao, J (Gao, J.)
刊名	AUSTRALIAN JOURNAL OF EARTH SCIENCES
	2010
卷号	57 期号:6 页码:803-818
关键词	Altay Mountains China geochemistry geochronology granite Mengku iron deposit
ISSN号	0812-0099
英文摘要	SHRIMP U-Pb zircon dating of a granite in the Mengku iron district, Altay, Xinjiang, yielded an age of 400 +/- 6 Ma (MSDW=1.3), which is similar to the age (SHRIMP U-Pb zircon age 404 +/- 8 Ma) of granite north of orebody No. 1 in the Mengku iron deposit. This indicates that the two plutons are of Early Devonian age. These plutons intruded the Kangbutiebao Formation, thereby constraining the age of the Kangbutiebao Formation to404 Ma. The Mengku granite and granite north of the No. 1 orebody are characterised by high silica (SiO2=72.29-78.63%), Na enrichment (Na2O=4.12-7.98%), elevated Th, La, Ce, Nd and LREE, depleted Nb, Ta, P and Ti, as well as moderate negative Eu anomalies (Eu=0.38-0.65). The granites belong to the low-K (tholeiitic) series with Na2O/K2O=6.36-196.25 and are metaluminous and slightly peraluminous with alumina oversaturation indices of 0.97-1.09. Sr-Nd isotopic analyses [epsilon Nd(t)=1.04-2.17] indicate that the sources of the Mengku pluton are predominantly mantle-derived, contaminated with small amounts of crustal components. Chemical, isotopic and structural characteristics indicate that granites in the Mengku district originated in a continental-arc setting associated with plate subduction.
学科主题	矿床地质
WOS关键词	ASIAN OROGENIC BELT ; NW CHINA ; CONTINENTAL GROWTH ; ACCRETIONARY OROGENESIS ; ISOTOPIC EVIDENCE ; SOUTHERN MARGIN ; CRUSTAL GROWTH ; XINJIANG ; ZIRCON ; ROCKS
WOS研究方向	Geology
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000280815400007
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39130]
专题	中国地质调查局
作者单位	1.[Yang, F. 2.Mao, J. 3.Liu, F. 4.Geng, X.] Chinese Acad Geol Sci, Inst Mineral Resources, MRL Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China [Chai, F.] Xinjiang Univ, Coll Geol, Urumqi 830046, Xinjiang, Peoples R China [Chai, F.] Xinjiang Univ, Prospecting Engn Program, Urumqi 830046, Xinjiang, Peoples R China [Guo, Z.] 706 Geol Party Xinjiang Geol & Explorat Bur Nonfe, Altay 836500, Xinjiang, Peoples R China [Zhou, G.] 4 Geol Party Xinjiang Bur Geol & Mineral Explorat, Altay 836500, Xinjiang, Peoples R China [Gao, J.] Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 5.中国地质科学院矿产资源研究所
推荐引用方式 GB/T 7714	Yang, F ,Mao, J ,Liu, F ,et al. Geochronology and geochemistry of the granites from the Mengku iron deposit, Altay Mountains, northwest China implications for its tectonic setting and metallogenesis[J]. AUSTRALIAN JOURNAL OF EARTH SCIENCES,2010,57(6):803-818.
APA	Yang, F .,Mao, J .,Liu, F .,Chai, F .,Guo, Z .,...&Gao, J .(2010).Geochronology and geochemistry of the granites from the Mengku iron deposit, Altay Mountains, northwest China implications for its tectonic setting and metallogenesis.AUSTRALIAN JOURNAL OF EARTH SCIENCES,57(6),803-818.
MLA	Yang, F ,et al."Geochronology and geochemistry of the granites from the Mengku iron deposit, Altay Mountains, northwest China implications for its tectonic setting and metallogenesis".AUSTRALIAN JOURNAL OF EARTH SCIENCES 57.6(2010):803-818.