广西内生有色─贵金属大地构造成矿单元

根据大地构造环境和其成矿作用以及已知矿床矿点时空分布特点之间的联系，广西可分为８个大地构造成矿带：四堡期（Ｐｔ（１＋２））四堡陆间弧锡多金属成矿带；燕山期（Ｔ３－Ｅ）云开岩浆弧钨锡多金属成矿带；燕山期云开弧背锡钨多金属成矿带；燕山期云开弧后陆内铅锌多金属成矿带；钦州期（Ｚ－Ｐ１）残余陆缘盆地锡钨多金属成矿带；柳州过渡构造城潜在多金属成矿带；上思过渡构造域潜在多金属成矿带和藏南期（Ｋ２－Ｅ）藏缅弧后陆内桂西锡多金属成矿带，含１０个成矿区．探讨了成矿带的大地构造成矿机制和特点，提出了成矿远景区．

GEOTECTONO-ME TALLOGENIC UNITS OF ENDOGENIC NONFERROUS-NOBLE METALS IN GUANGXI

According to the relationship among geotectonic setting and its metallogenesis as well as characteristics of time-space distribution of known ore deposets and spots, 8geotectono-metallogenic belts can be concluded in Guangxi as following, atin-polymetallogenic belt in the Sipu intercontinental arc of the Sipu stage (Pt(1+2), a wolfram -tim -polymetallogneic belt in the Yunkai magmatic arc of the Yanshan stge (T3-E),a tin-wolfram-polymetallogenic belt in the Yunkai back-back-arc of the Yanshan stage,a lead-zinc-polymetallogenic belt in the Yunkai back-arc intracontinent of the Yanshan stage,a tin-wolfram-polymetallogenic belt in the Qinzhou residual epicontinental basin of the Qinzhou stage (Z-P1),a Liuzhou potential metallogenic belt of transitional geotectonic domain, a Shngsi potential metallogmenic belt in transitional geotectonic domain and a tin-polymetallogenic belt in the Tibet-Burma back-arc intracontinent of Zangnan stage (K2-E),and 10 polymetallogenic regions. The geotctonic genetic mechanism and their characteristics is discussed and metallogenic prospect regions proposed.