Petrogenesis and tectonic setting of ore-related porphyry in the Duobaoshan Cu deposit within the eastern Central Asian Orogenic Belt, Heilongjiang Province, NE China

doi:10.1016/j.jseaes.2018.07.002

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院矿产资源研究重点实验室

	Petrogenesis and tectonic setting of ore-related porphyry in the Duobaoshan Cu deposit within the eastern Central Asian Orogenic Belt, Heilongjiang Province, NE China
	Zhao, Chao 1,2,3; Qin, Kezhang 1,2,3; Song, Guoxue 3; Li, Guangming 1,2; Li, Zhenzhen 1,2; Pang, Xuyong 1,2,3; Wang, Le 1,2,3
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2018-10-01
卷号	165 页码:352-370
关键词	Duobaoshan deposit Ore-related porphyry SIMS zircon U-Pb age Geochemistry Sr-Nd-Hf-O isotopes Eastern CAOB
ISSN号	1367-9120
DOI	10.1016/j.jseaes.2018.07.002
英文摘要	The Duobaoshan porphyry Cu deposit (2.37 Mt Cu @ 0.47%; 73.4 tons Au @ 0.144 g/t and 80,000 tons Mo @ 0.016%) is located in the eastern part of the Central Asian Orogenic Belt (CAOB). Mineralization mainly occurs in the granodiorite and Ordovician volcanic rocks, and SIMS zircon U-Pb dating indicates that the ore-forming granodiorite porphyry emplaced at around 477 Ma. In addition, whole-rock major and trace element compositions show that the granodiorite porphyry belongs to a high-K to medium-K calc-alkaline series and has an affinity of adakitic rocks with high Sr, and low Y and Yb. Granodiorite porphyry samples are enriched in large ion lithophile elements (LILE) and light rare earth elements (LREE), and are depleted in high field strength elements (HFSE) and heavy rare earth elements (HREE). Their geochemical natures show a high Ni content (average 45.5 ppm) and Mg-# value (average 46). The granodiorite porphyry shows very low initial Sr-87/Sr-86 ratios (from 0.70279 to 0.70414) and low 8180 (mean = +5.38%o), very high epsilon(Nd)(t) values (mean = + 4.7) and epsilon(Hf)(t) values (mean = + 12.11), and very young two-stage Hf and Nd model ages (average 765 Ma and 827 Ma, respectively). Given that the ore-related intrusions are coeval with the high-Mg diorites and and esites in the region, it is proposed that both the ore-related granodiorite porphyry and granodiorite were derived from melting of a thickened juvenile mafic lower crust, which was induced by underplating of melts from a depleted mantle wedge above a subduction zone. A certain proportion of slab melts may also have been involved in the magmas that produced ore-related intrusions.
资助项目	National Natural Science Foundation of China[41390444] ; National Natural Science Foundation of China[41572064]
WOS关键词	TRONDHJEMITE-GRANODIORITE TTG ; UNDERPLATED BASALTIC CRUST ; SETOUCHI VOLCANIC BELT ; U-PB GEOCHRONOLOGY ; HIGH-MG ANDESITES ; CONTINENTAL-CRUST ; GEOLOGICAL SIGNIFICANCE ; ADAKITIC MAGMAS ; SOUTHWEST JAPAN ; FLAT SUBDUCTION
WOS研究方向	Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000449447300021
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/89441]
专题	地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者	Qin, Kezhang
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Chao,Qin, Kezhang,Song, Guoxue,et al. Petrogenesis and tectonic setting of ore-related porphyry in the Duobaoshan Cu deposit within the eastern Central Asian Orogenic Belt, Heilongjiang Province, NE China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2018,165:352-370.
APA	Zhao, Chao.,Qin, Kezhang.,Song, Guoxue.,Li, Guangming.,Li, Zhenzhen.,...&Wang, Le.(2018).Petrogenesis and tectonic setting of ore-related porphyry in the Duobaoshan Cu deposit within the eastern Central Asian Orogenic Belt, Heilongjiang Province, NE China.JOURNAL OF ASIAN EARTH SCIENCES,165,352-370.
MLA	Zhao, Chao,et al."Petrogenesis and tectonic setting of ore-related porphyry in the Duobaoshan Cu deposit within the eastern Central Asian Orogenic Belt, Heilongjiang Province, NE China".JOURNAL OF ASIAN EARTH SCIENCES 165(2018):352-370.