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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

文献类型：期刊论文

作者Yang, F.1; Mao, J.1; Liu, F.1; Chai, F.2,3; Guo, Z.4; Zhou, G.5; Geng, X.1; Gao, J.6
刊名AUSTRALIAN JOURNAL OF EARTH SCIENCES
出版日期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
DOI10.1080/08120099.2010.495464
文献子类Article
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.
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
WOS记录号WOS:000280815400007
出版者TAYLOR & FRANCIS LTD
资助机构National Basic Research Program of China(2007CB411302) ; National Basic Research Program of China(2007CB411302) ; National Natural Science Foundation of China(40672065) ; National Natural Science Foundation of China(40672065) ; National Key Technologies RD Program(2006BAB07B02-01 ; National Key Technologies RD Program(2006BAB07B02-01 ; Geological Survey of China(1212010786006) ; Geological Survey of China(1212010786006) ; 2006BAB07B02-05) ; 2006BAB07B02-05) ; National Basic Research Program of China(2007CB411302) ; National Basic Research Program of China(2007CB411302) ; National Natural Science Foundation of China(40672065) ; National Natural Science Foundation of China(40672065) ; National Key Technologies RD Program(2006BAB07B02-01 ; National Key Technologies RD Program(2006BAB07B02-01 ; Geological Survey of China(1212010786006) ; Geological Survey of China(1212010786006) ; 2006BAB07B02-05) ; 2006BAB07B02-05) ; National Basic Research Program of China(2007CB411302) ; National Basic Research Program of China(2007CB411302) ; National Natural Science Foundation of China(40672065) ; National Natural Science Foundation of China(40672065) ; National Key Technologies RD Program(2006BAB07B02-01 ; National Key Technologies RD Program(2006BAB07B02-01 ; Geological Survey of China(1212010786006) ; Geological Survey of China(1212010786006) ; 2006BAB07B02-05) ; 2006BAB07B02-05) ; National Basic Research Program of China(2007CB411302) ; National Basic Research Program of China(2007CB411302) ; National Natural Science Foundation of China(40672065) ; National Natural Science Foundation of China(40672065) ; National Key Technologies RD Program(2006BAB07B02-01 ; National Key Technologies RD Program(2006BAB07B02-01 ; Geological Survey of China(1212010786006) ; Geological Survey of China(1212010786006) ; 2006BAB07B02-05) ; 2006BAB07B02-05)
源URL[http://ir.iggcas.ac.cn/handle/132A11/72728]  
专题中国科学院地质与地球物理研究所
通讯作者Yang, F.
作者单位1.Chinese Acad Geol Sci, Inst Mineral Resources, MRL Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China
2.Xinjiang Univ, Coll Geol, Urumqi 830046, Xinjiang, Peoples R China
3.Xinjiang Univ, Prospecting Engn Program, Urumqi 830046, Xinjiang, Peoples R China
4.706 Geol Party Xinjiang Geol & Explorat Bur Nonfe, Altay 836500, Xinjiang, Peoples R China
5.4 Geol Party Xinjiang Bur Geol & Mineral Explorat, Altay 836500, Xinjiang, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
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.

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来源：地质与地球物理研究所

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