| 铜陵矿集区成矿流体系统时限的初步厘定 |
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| 引用本文：.2004.Tentative Temporal Constraints of Ore_forming Fluid Systems in Tongling Metall ogenic Province[J].Mineral Deposits,23(3):271~280 |
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| 基金项目:国土资源部科技司专项研究计划(B0002_3)和国家地质调查局地质调查项目(200110 000004) |
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| 中文摘要:文章在铜陵矿集区成矿流体系统划分的基础上，对其中的部分流体系 统的流体记录采集了13件样品，分别用Re-Os法(辉钼矿、黄铁矿)、Ar-Ar和K-Ar法(铬云母 、闪长岩等)进行了同位素年龄精确测定，结合野外对不同流体记录的产出层位、切割交叉 关系的研究，厘定了铜陵矿集区4套流体系统的时限。初步界定了矿集区部分流体系统的时 间界限，为流体系统的划分和成矿流体的研究提供了重要的基础。 |
| 中文关键词:地质学 流体系统 时限 初步厘定 铜陵矿集区 |
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| Tentative Temporal Constraints of Ore_forming Fluid Systems in Tongling Metall ogenic Province |
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| Abstract:Based on division of fluid systems in Tongling metallogenic province, the author s collected thirteen samples from various fluid systems. Molybdenite，pyrite，se ricite and diorite were precisely determined by Re_Os，Ar_Ar and K_Ar isotopic d ating methods. These data, combined with the host strata and the cross_cutting r elationship of fluid records, led the authors to determine the time limits of fo ur fluid systems in Tongling ore concentration area: Yanshanian low_to_moderate temperature (epithermal) fluid system〔（118.36±1.96） Ma〕, Yanshanian volcani c fluid system（Early Cretaceous）, Yanshanian magmatic fluid system（Late Juras sic_Early Cretaceous 〔(144.93±0.44）～（133.59±0.55） Ma〕 and Hercynian eruptive sedimentary fluid system〔early stage of Late Carboniferous (303±33) M a～late stage of Late Permian〕. On such a basis, the tentative temporal const raints of fluid systems in Tongling metallogenic province are established, a nd hence an important basis for fluid system division and metallogenic fluid stu dy is provided. |
| keywords:geology, fluid systems, temporal constraints, tentative decision, Tongling metallogenic province |
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