闽西南洛阳铁矿成矿的年代学及S-Pb-O-H同位素约束

IF 1.1 4区地球科学 Q3 GEOLOGY

Resource Geology Pub Date : 2020-10-06 DOI:10.1111/rge.12247

Sen Wang, Da Zhang, Tengda Yu, Ganguo Wu, Y. Di, Yaoyao Zhang, Jimin Yao

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引用次数: 5

摘要

洛阳铁多金属矿床是闽西南晚古生代盆地中一个著名的马坑型矿床。为探讨洛阳马坑型铁矿的成因，对洛阳马坑型铁矿进行了年代学和S-Pb-O-H同位素组成的综合研究。花岗岩的LA-ICP-MS锆石U-Pb年龄和辉钼矿的Re-Os年龄表明，花岗岩的侵位与洛阳矿床的成矿作用在133 ~ 131 Ma之间。H-O和S-Pb同位素组成表明，洛阳矿床成矿物质为岩浆热液源，成矿物质主要来源于上地壳，地幔物质污染程度较低。矿石矿物Pb同位素分析表明，洛阳铁矿形成于造山带。

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Geochronology and S–Pb–O–H isotopic constraints on the generation of the Luoyang Fe deposit in southwest Fujian Province, SE China

The Luoyang Fe polymetallic deposit is a well‐known Makeng‐type ore deposit in a late Paleozoic basin in southwest Fujian, southeast China. To investigate the generation of Makeng‐type Fe deposits, we conducted an integrated study of geochronology and S–Pb–O–H isotope compositions of the Luoyang Fe deposit. The LA–ICP–MS zircon U–Pb ages of the granite and Re–Os ages of the molybdenite suggest that the emplacement of the granite was coeval with the mineralization of the Luoyang deposit at 133–131 Ma. The H–O and S–Pb isotope compositions indicate that the metallogenic material of the Luoyang deposit had a magmatic hydrothermal source, and was derived mainly from the upper crust with a low degree of contamination of mantle material. The Pb isotope analyses of the ore minerals show that the Luoyang Fe deposit formed in an orogenic setting.

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来源期刊

Resource Geology 地学-地质学

CiteScore

2.30

自引率

14.30%

发文量

审稿时长

12 months

期刊介绍： Resource Geology is an international journal focusing on economic geology, geochemistry and environmental geology. Its purpose is to contribute to the promotion of earth sciences related to metallic and non-metallic mineral deposits mainly in Asia, Oceania and the Circum-Pacific region, although other parts of the world are also considered. Launched in 1998 by the Society for Resource Geology, the journal is published quarterly in English, making it more accessible to the international geological community. The journal publishes high quality papers of interest to those engaged in research and exploration of mineral deposits.