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The multiple mineralizations and geodynamic settings of the Laozuoshan Cu-Au deposit in the Jiamusi Massif, NE China: Zircon U-Pb geochronological, elemental and Hf isotopic geochemical evidence

文献类型：期刊论文

作者Bai, Cheng-lin3; Sun, Jing-gui3,4; Zhao, Chun-tao3; Qin, Ke-zhang1; Liu, Yang3; Chu, Xiao-lei3; Xu, Zhi-kai3; Li, Yi-xin2
刊名ORE GEOLOGY REVIEWS
出版日期2021-10-01
卷号137页码:19
ISSN号0169-1368
关键词Multiple mineralization Geodynamic setting Laozuoshan Cu-Au deposit Jiamusi Block
DOI10.1016/j.oregeorev.2021.104291
英文摘要Situated in the centre of the Jiamusi Block, the Laozuoshan deposit is a large-sized deposit with composite of vein and lenticular Au orebodies and veinlet-disseminated Cu-Au orebodies. It is characterized by two types of mineralization, skarn Au mineralization and porphyry Cu-Au mineralization. The former occurs along the contact zone between granodiorite and Proterozoic metamorphic rocks in the eastern and central ore zones, while the latter is hosted in granodiorite porphyry and diorite in the western ore zone. In this study, we present the results of geochronological and geochemical analyses of these rocks which show the following features. (1) Zircon U-Pb dating results show that the ages of granodiorite, diorite and granodiorite porphyry are 264.6 +/- 2.6 Ma, 103.2 +/- 1 Ma and 104.6 +/- 1.8 Ma, respectively. (2) Whole-rock elemental compositions indicate that the granodiorite shows potassium-rich adakitic rock properties, and the diorite has typical island arc calc-alkaline magmatic properties. They are all characterized by enrichment in light rare earth elements (LREEs) and large ion lithophile elements (LILEs) and depletion in heavy rare earth elements (HREEs) and high field strength elements (HFSEs). (3) The in-situ Hf isotope analysis results show that the granodiorite and diorite have epsilon Hf(t) values of -3.7 to -8.7 and -0.4 to 10.7, respectively, corresponding to TDMC ages of 2040-2500 Ma and 630-1650 Ma, respectively. These results indicate two periods of mineralization in the Laozuoshan deposit. Skarn mineralization occurred in the late Permian and was a result of metasomatism between partial melting magma that originated from thickened Paleoproterozoic lower crust and Proterozoic marble. Porphyry mineralization took place in the Early Cretaceous and was a result of the shallow emplacement of mid-Neoproterozoic mantle-derived magma with the addition of crustal materials. In terms of geodynamic settings, skarn Au and porphyry Cu-Au mineralization occurred in a compressional setting formed during the gradual closure of the Paleo-Asian Ocean, and a crustal-thinning setting formed from Eurasian Plate-ward subduction, retreating, and rollback of the Paleo-Pacific Plate, respectively.
WOS关键词ASIAN OROGENIC BELT ; GOLD DEPOSIT ; HEILONGJIANG PROVINCE ; VOLCANIC-ROCKS ; NORTHEASTERN CHINA ; GNEISSIC GRANITES ; COPPER-DEPOSIT ; EAST CHINA ; FAULT ZONE ; PORPHYRY
资助项目National Key Research and Development Program of China[2017YFC0601306] ; Program of the China Geological Survey[DD20190368]
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
语种英语
出版者ELSEVIER
WOS记录号WOS:000702741600001
资助机构National Key Research and Development Program of China ; National Key Research and Development Program of China ; Program of the China Geological Survey ; Program of the China Geological Survey ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Program of the China Geological Survey ; Program of the China Geological Survey ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Program of the China Geological Survey ; Program of the China Geological Survey ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Program of the China Geological Survey ; Program of the China Geological Survey
源URL[http://ir.iggcas.ac.cn/handle/132A11/102750]  
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Sun, Jing-gui
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Shandong Gold Resource Dev Co Ltd, Jinan 250101, Peoples R China
3.Jilin Univ, Coll Earth Sci, Changchun 130061, Peoples R China
4.Minist Nat Resources, Key Lab Mineral Resources Evaluat Northeast Asia, Changchun 130061, Peoples R China
推荐引用方式
GB/T 7714		 Bai, Cheng-lin,Sun, Jing-gui,Zhao, Chun-tao,et al. The multiple mineralizations and geodynamic settings of the Laozuoshan Cu-Au deposit in the Jiamusi Massif, NE China: Zircon U-Pb geochronological, elemental and Hf isotopic geochemical evidence[J]. ORE GEOLOGY REVIEWS,2021,137:19.
APA Bai, Cheng-lin.,Sun, Jing-gui.,Zhao, Chun-tao.,Qin, Ke-zhang.,Liu, Yang.,...&Li, Yi-xin.(2021).The multiple mineralizations and geodynamic settings of the Laozuoshan Cu-Au deposit in the Jiamusi Massif, NE China: Zircon U-Pb geochronological, elemental and Hf isotopic geochemical evidence.ORE GEOLOGY REVIEWS,137,19.
MLA Bai, Cheng-lin,et al."The multiple mineralizations and geodynamic settings of the Laozuoshan Cu-Au deposit in the Jiamusi Massif, NE China: Zircon U-Pb geochronological, elemental and Hf isotopic geochemical evidence".ORE GEOLOGY REVIEWS 137(2021):19.

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来源：地质与地球物理研究所

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