Geochronology and geochemistry study of the biotite granite from the Daolundaba Cu-W polymetallic deposit in the Inner Mogolia and its geological significance

CORC > 中国地质调查局 > 中国地质调查局 > 中国地质科学院矿产资源研究所

	Geochronology and geochemistry study of the biotite granite from the Daolundaba Cu-W polymetallic deposit in the Inner Mogolia and its geological significance
	Zhou ZhenHua 4; Ouyang HeGen ; Wu XinLi 1; Liu Jun ; Che HeWei 2
刊名	ACTA PETROLOGICA SINICA
	2014
卷号	30 期号:1 页码:79-94
关键词	Zircon U-Pb dating Hf-Pb isotope Early Permian Daolundaba Cu-W polymetallic deposit Xingmeng Orogenic Belt
ISSN号	1000-0569
英文摘要	The Daolundaba Cu-W polymetallic deposit in Inner Mongolia is a newly found Cu-W-Sn intergrowth deposit in the southern Great Hinggan Range, the mineralization is closely related to the coarse-grained biotite granite. However, there is a hot argument over the formation age and a notable gap in the study on magma sources of the biotite granite. In this study, we conducted systematic rock geochemistry, geochronology, Hf-Pb isotopic composition analysis on the biotite granites in Daolundaba deposit. Biotite granite in Daolundaba deposit were characteristic with SiO, of 65.42% similar to 67.41%, Al, K enriched, A/NCK values of 1.08 -1.27, CIPW standard mineral corundum content is higher (1.82% 4.08%), which belonged to peraluminous S-type granite. Trace, rare earth elements composition of the samples showed LREE enriched, HREE depleted pattern and negative Eu anomalies as well as obvious Nb, Ta, Sr, Ti depleted, which displayed as crustal origin volcanic arc granites. Zircon U-Pb dating results showed that the formation age of the biotite granites ranged from 292.1 +/- 0.84Ma (MSWD =1.18) to 292.5 +/- 0.88Ma (MSWD =0.46). Hf isotope composition testing results suggested that the ew(t) values of the biotite granites fall mainly into the range of -0.8 similar to + 13.3, with relatively low Hf-176/(177) Hf values (0.282643 similar to 0.282804) and older two-stage model ages (740 -1024Ma). Whole-rock Pb isotopic compositions are uniform, the values of (206) pb/(204) Pb, (207)po/b(204) Pb and Pb-208/(204) Pb were 18.416 similar to 18. 766, 15.519 similar to 15.542 and 38.238 similar to 39.460, respectively. Biotite granites were the product under the setting of the Early Permian subduction-accretion of the southern margin of Siberian plate, which magma source was mainly derived from the partial remelting of the newly derived young crust from the depleted mantle, and may be occurred contamination by residual ancient crust or mantle during the emplacement process. Paleozoic is an important metallogenic stage of the Xingmeng Orogenic Belt, and the mineralization major of the porphyry-skarn-hydrothermal vein Cu-Mo-Au polymetallic deposit under the island arc or active continental margin setting.
学科主题	矿床地质
WOS关键词	U-PB AGE ; NATURAL REFERENCE MATERIAL ; RE-OS GEOCHRONOLOGY ; SN-FE DEPOSIT ; MC-ICP-MS ; NORTH CHINA ; GEODYNAMIC SETTINGS ; DETRITAL ZIRCONS ; SOUTH CHINA ; LU-HF
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000330817100006
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40421]
专题	中国地质科学院矿产资源研究所
作者单位	1.Chinese Acad Geol Sci, Inst Mineral Resources, MLR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China 2.Met & Geol Explorat Bur N China, Geol Team 4, Qinhuangdao 066013, Peoples R China 3.China Univ Geosci, Sch Earth Sci & Mineral Resources, Beijing 100083, Peoples R China 4.中国地质科学院矿产资源研究所
推荐引用方式 GB/T 7714	Zhou ZhenHua,Ouyang HeGen,Wu XinLi,et al. Geochronology and geochemistry study of the biotite granite from the Daolundaba Cu-W polymetallic deposit in the Inner Mogolia and its geological significance[J]. ACTA PETROLOGICA SINICA,2014,30(1):79-94.
APA	Zhou ZhenHua,Ouyang HeGen,Wu XinLi,Liu Jun,&Che HeWei.(2014).Geochronology and geochemistry study of the biotite granite from the Daolundaba Cu-W polymetallic deposit in the Inner Mogolia and its geological significance.ACTA PETROLOGICA SINICA,30(1),79-94.
MLA	Zhou ZhenHua,et al."Geochronology and geochemistry study of the biotite granite from the Daolundaba Cu-W polymetallic deposit in the Inner Mogolia and its geological significance".ACTA PETROLOGICA SINICA 30.1(2014):79-94.