| 秦岭卡林型金矿床及相关问题探讨 |
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| 引用本文：.1998.A tentative discussion on the carlin-type gold deposits in Qinling and related problems[J].Mineral Deposits,17(2):172~184 |
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| 基金项目:武警黄金指挥部重点科研项目（1991-Au-5） |
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| 中文摘要:鉴于目前对沉积岩型金矿、卡林型金矿概念和类型划分存在分岐，该文往对秦岭沉积岩区浸染状金矿研究基础上，主张将沉积岩为容矿岩石的金矿床划分为广义和狭义两类：沉积岩型金矿床是具有广义内涵的一类金矿，包容了从沉积-轻微改造，到沉积-强烈改造的一类热液金矿；可划分四种亚娄：卡林型、变质细碎屑岩型、热水沉积岩型、脉状体型。卡林型金矿床是狭义内涵的金矿类型，属于沉积岩型金矿类型中的重要亚类；在区域金成矿密集区内，可构成卡林型矿床地球化学系列。建议不要将沉积岩型金矿和卡林型金矿相互代替使用或等同起来。秦岭沉积岩区卡林型金矿与美国卡林典型矿床有较好的类比性。矿床具有沉积-轻微改造的中-低温热液成因特征。 |
| 中文关键词:卡林型金矿床 沉积岩型金矿床 成矿特征 成矿机制 秦岭 |
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| A tentative discussion on the carlin-type gold deposits in Qinling and related problems |
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| Abstract:In view of the differences existent in the concept and classification of sediments-hosted gold deposits and Carlin-type gold deposits, this paper, based on the study of disseminated gold deposits in Qinling sedimentary area, suggests classifying gold deposits hosted by sedimentary rocks into two types, i. e. , broad sense deposits and narrow sense ones. The sediments-hosted gold deposits are of broad sense type, which consists of sedimentary-weakly reformed and sedimentary-intensely reformed hydrothermal deposits and might be divided into four subtypes, viz. , Carlin type! metamorphosed fine-clastic rock type, sedex type and vein type. The Carlin-type gold deposits are of narrow sense type and constitute an important subtype in sediments-hosted gold deposits. In gold-concentrated areas of the regional metallogenic belt, the Carlin-type gold deposits might form their geochemical series. It is suggested that the terms "sediments-hosted gold deposit" and "Carlin-type gold deposit" should not be used as synonyms. The Carlin-type gold deposits in Qinling area are well correlatable with the Carlin-type gold deposits in U. S. A. These deposits are characterized by sedimentary-weakly reformed mesothermal-epithermal origin. |
| keywords:Carlin-type gold deposit, sediments-hosted gold deposit, mineralization characteristics, metallogenic mechanism/ Qinling area |
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