| 河台韧性剪切带型金矿床成矿作用地球化学研究 |
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| 引用本文： | 陆建军. 河台韧性剪切带型金矿床成矿作用地球化学研究[J]. 南京大学学报(自然科学版), 1993, 29(2): 293-302 |
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| 作者姓名： | 陆建军 |
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| 作者单位： | 南京大学地球科学系 |
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| 摘 要： | 河台韧性剪切带型金矿床产于糜梭岩之中。石英中包裹体成分及氢、氧和碳同位素研究揭示,成矿流体为雨水和变质流体的混合体,富硫和碳,早期成矿流体主要为变质作用、混合岩化和花岗岩化作用过程中产生的变质流体,成矿晚期有大量雨水参与;流体成分以 K~ 、Na~ 、HCO_3~-、SO_4~=、CO、CO_2、CH_4和水为主.硫、铅同位素研究揭明,金等成矿物质来源于云开群上亚群.结合地层中金丰度和区域性金分布研究得出,在变质作用、混合岩化和花岗岩化作用过程中,矿源层中金发生明显活化转移,并在构造扩容带聚集成矿.
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| 关 键 词： | 包裹体 同位素 金丰度 地球化学 广东河台金矿 |
A GEOCHEMICAL STUDY ON METALLOGENESIS OF HETAI GOLD DEPOSIT IN DUCTILE SHEAR ZONE,GUANGDONG PROVINCE |
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| Lu Jianjun. A GEOCHEMICAL STUDY ON METALLOGENESIS OF HETAI GOLD DEPOSIT IN DUCTILE SHEAR ZONE,GUANGDONG PROVINCE[J]. Journal of Nanjing University: Nat Sci Ed, 1993, 29(2): 293-302 |
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| Authors: | Lu Jianjun |
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| Affiliation: | Department of Earth Sciences |
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| Abstract: | Hetai gold deposit in ductile shear zone is hosted by mylonites.Its features of inclusions,oxygen,hydrogen and carbon isotopes indicate that ore-forming fluids have a middle salinity,are rich in carbon and sulfur and come from metamrophic and migmatitic solutions in the early ore-forming stage,whereas a huge amount of meteoric water participated in ore-forming processes in the late ore-forming stage.The researches on sulfur and lead isotopes and gold abundances show that the Yunkal Group is the source strata of gold and supplies a great number of gold for formation of the gold deposit.Gold mineralisation is closely related to metamorphism,migmatization and granitization. |
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| Keywords: | fluid inclusion isotope gold abundance the Hetai gold deposit in Guangdong |
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