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Re-Os and U-Pb geochronology of the Songbei porphyry-skarn Mo deposit, North China Craton: Implications for the Early Jurassic tectonic setting in eastern China

文献类型：期刊论文

作者Chu, Shaoxiong; Zeng, Qingdong; Liu, Jianming
刊名JOURNAL OF GEOCHEMICAL EXPLORATION
出版日期2017-10-01
卷号181页码:256-269
关键词U-pb And Re-os Dating Early Jurassic Songbei Porphyry-skarn Deposit Yanshan-liaoning Mo Belt North China Craton Paleo-pacific Plate
ISSN号0375-6742
DOI10.1016/j.gexplo.2017.08.005
文献子类Article
英文摘要The Songbei porphyry-skarn Mo deposit is situated in the eastern part of the Yanshan-Liaoning Mo metallogenic belt on the northern margin of the North China Craton. The deposit is temporally and spatially associated with alkali-feldspar granitic porphyry. We present LA-ICP-MS zircon U-Pb and molybdenite Re-Os dating, whole-rock geochemistry, and in situ zircon Lu-Hf isotopic data for the ore-bearing porphyry, in an attempt to constrain its petrogeriesis and geodynamic setting. The LA-ICP-MS zircon U-Pb dating shows that the Songbei alkali-feldspar granitic porphyry was emplaced in the Early Jurassic (184 +/- 2.0 Ma). Molybdenite Re-Os dating indicates that the associated Mo mineralization was contemporaneous (183.2 +/- 3.0 Ma) with the igneous intrusion. The alkali-feldspar granitic porphyry belongs to the high-K calc-alkaline to shoshonitic series. The porphyry shows affinities with highly fractionated I-type granites: i.e., it is silica rich, with high contents of alkalis, pronounced enrichment of light REE relative to heavy REE, and has significant negative Ba, Sr, P, Ti, and Eu anomalies. Zircon extracted from the alkali-feldspar granitic porphyry has epsilon Hf(t) values of similar to 10.0 to -6.9 and crustal model ages (T-DM2) ranging from 1657 to 1860 Ma. It is suggest that the alkali-feldspar granitic porphyry formed by partial melting of the ancient lower crust of North China Craton followed by extensive fractionally crystallization. Both the geochemical signatures and the spatial - temporal distribution of mineralization during the Early - Middle Jurassic in eastern China suggest that the Songbei porphyry-skarn Mo deposit was formed in a continental margin setting associated with westward subduction of the paleo-Pacific plate in the Early Jurassic.
WOS关键词HF-ISOTOPE ANALYSIS ; LACHLAN FOLD BELT ; A-TYPE GRANITOIDS ; I-TYPE GRANITES ; NE CHINA ; ZHANGGUANGCAI RANGE ; NORTHEASTERN CHINA ; HEILONGJIANG PROVINCE ; VOLCANIC-ROCKS ; TRACE-ELEMENTS
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000414622400022
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China(41602099 ; Major State Basic Research Program of China(2013 CB429804) ; Open Foundation of the Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-04) ; 41390443) ; National Natural Science Foundation of China(41602099 ; Major State Basic Research Program of China(2013 CB429804) ; Open Foundation of the Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-04) ; 41390443) ; National Natural Science Foundation of China(41602099 ; Major State Basic Research Program of China(2013 CB429804) ; Open Foundation of the Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-04) ; 41390443) ; National Natural Science Foundation of China(41602099 ; Major State Basic Research Program of China(2013 CB429804) ; Open Foundation of the Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-04) ; 41390443)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62429]  
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Chu, Shaoxiong
作者单位Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Chu, Shaoxiong,Zeng, Qingdong,Liu, Jianming. Re-Os and U-Pb geochronology of the Songbei porphyry-skarn Mo deposit, North China Craton: Implications for the Early Jurassic tectonic setting in eastern China[J]. JOURNAL OF GEOCHEMICAL EXPLORATION,2017,181:256-269.
APA Chu, Shaoxiong,Zeng, Qingdong,&Liu, Jianming.(2017).Re-Os and U-Pb geochronology of the Songbei porphyry-skarn Mo deposit, North China Craton: Implications for the Early Jurassic tectonic setting in eastern China.JOURNAL OF GEOCHEMICAL EXPLORATION,181,256-269.
MLA Chu, Shaoxiong,et al."Re-Os and U-Pb geochronology of the Songbei porphyry-skarn Mo deposit, North China Craton: Implications for the Early Jurassic tectonic setting in eastern China".JOURNAL OF GEOCHEMICAL EXPLORATION 181(2017):256-269.

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来源：地质与地球物理研究所

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