湖南外生金成矿特征及成矿区预测

外生金包括砾岩金和松散砂金，是外能作用在地表开放条件下形成的。在地壳发展过程中，动力学成矿的时空演化是连续的，但主要集中在早、晚元古代及早、晚古生代和中生代，而大发展于新生代。依据演化规律和矿化环境，提出５个找矿有望的外生金成矿带。

Exogenous Deposits of Gold and Prediction of Metallogenic Provinces in Hunan

Exogenous deposits of gold including auriferous conglomerate deposit and that of loose placer gold form under the open conditions on the earth surface.During the process of development of earth crust,evolution of time and space of dynamic mineralization is successive but mineralization mainly concentrates in early and late Proterozoic Peneds,early and late Paleozoic Periods and Mesozoic Period,and in Particular it develops greatly in Cenozoic Period.According to evolution and environment of minerailization author proposes 5 prospective belts of exogenous mineralization of gold.