湖南金矿大地构造类型及分布规律

运用地洼成矿理论,根据湖南金矿含矿建造。控矿构造,成矿元素组合等。讨论了其大地构造类型及其分布规律。地槽阶段形成的金矿主要为石英脉型金矿。成因类型为变质一地下水热液型,主要分布在雪峰弧形带;地台阶段形成的金矿主要为微细浸染型,成因类型为地下水再造型。主要分布于白马山一龙山东西向构造带;地洼阶段形成的金矿主要为伴生金矿,成因类型为岩浆一次火山热液型,主要分布于七宝山一水口山一铜山岭北东向断裂带及湘南地区的一些与同熔型岩体有关的有色金属矿床中。

Geotectonic Types and Distributional Regularities of Gold Deposits in Hunan Province

Base Upon the Charcteristics of Gold Deposits in Hunan Province, such as auriferous formation, ore-controlled structures, ore forming metallic elements assemenblage and so on, this paper has applied the Diwa (geodepression) metallogeneic theroy to discuss their geotectonic types and distributional regu larities. In geosynclinal stage, gold mainly occurs in the quartz vein with the genetical type of metamorphic-underground hydrothermal ore deposits, which mainly distribute in the Xuefeng arc-belt. In the platform stage, gold are mainly disseminated in tiny sze with the genetical type of underground hydrothermal ore deposits which are mainly distribute in the Baimashan Longshan E-W structural belt. In the Diwa (geodepression ) stage, gold are mainly associated with many kinds of non-ferrousmetal related to syntectic magma, with the genetic type of magma and /or subvolcanic hydrothermal ore deposits which mainly distribute in the Qibaoshan-Shuikoushan -Tongshanling NE fault-belt and in southern Hunan.