摘要
燕山期由于受华夏构造自东向西仰冲作用的影响、改造作西侧伏的海西、印支褶皱带形成ＮＥ向分布、断面南倾、向西南撒开、向北东收敛，形如帚状推覆断裂带，在靠近收敛部分控制着金矿的分布。印支期金矿和碳酸盐台地礁岩的消失、礁前滑脱砾岩和火山碎屑浊积岩系上超盆地的复合、有机质的热解、分异有关，形成成岩—后生矿床；燕山晚期金矿以改造作用为主，形成后生矿床。
During Yanshanian because of obduction of Cathyaysian tectonic from east to west, Hercynian and Indo- Sinian fold belts were reformed, formed brush nappe fault belt opened to southwestward and convergened to northeastward. The gold deposit is located near convergence region. Indo-Sinian gold deposits are associated with the disappearance of carbonate platform reef rock, the composed of slip breacia of fore reef and pyroclastic turbidite rocks in superimposed basin and the thermolysis and differenliation of organic materails to development diagenesis--epigenetic deposit.Late Yanshanian predominating reform produced epigenetic mineral deposit.
出处
《广西地质》
1998年第4期37-44,共8页
Guangxi Geology
