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桂西地区位于峨眉山大火成岩省的西南端,与峨眉山大火成岩省具有一定的空间耦合关系(张旗等,1999)。基本地质面貌是广泛分布的三叠纪沉积中多处出露孤立的晚古生代地层,这些晚古生代地层往往伴随有大面积的基性岩(吴若浩,1993)。桂西地区分布的“辉绿岩型金矿”中的辉绿岩与晚古生代玄武岩共生(吴浩若等,1993,1997),说明晚古生代期间,桂西地区的基性岩浆作用与金矿成矿有密切关系。从野外地
The western Guangxi is located in the southwestern tip of the Emeishan large igneous province and has some spatial coupling with the Emeishan Igneous Province (Zhang et al., 1999). The basic geological features are isolated Late Paleozoic strata exposed extensively in the Triassic sediments. These Late Paleozoic strata are often accompanied by extensive area of basic rocks (Wu Ruohao, 1993). Diabase in the “diabase-type gold deposits” in western Guangxi is symbiotic with Late Paleozoic basalts (Wu et al., 1993, 1997), indicating that the basic magmatism in the western Guangxi during the Late Paleozoic was similar to that of the gold deposits Mineralization is closely related. From the field