黔东地区下古生界地层中金属成矿与油气成藏的关系

贵州东部下古生界海相地层中,有些金属矿产与古油气藏有着密切的空间关系.文章根据地层中金属元素的含量初步判断了主要的矿源层.Hg、Sb、Au 3种金属元素与南方地区下古生界最为主要的烃源岩九门冲组有着密切的成生关系,伴随着九门冲组的埋藏演化,在油气演化的湿气阶段,金属矿物逐步结晶成矿.矿床最终就位于有利的沉积相区和沉积界面中,如灰岩重力流、古杯点礁、局限海台地、古喀斯特等.

RELATIONSHIP BETWEEN METAL MINERALIZATION AND ACCUMULATION OF OIL AND GAS IN THE EASTERN GUIZHOU

There are affinities between some metal deposits and paleo - oil deposits in lower Paleozoic strata in the eastern Guizhou province. Some metal source rocks are estimated based on contents of trace elements in strata. Three metals such as Hg, Sb and Au are suggested migrated together with oil and gas which generated from Jiumenchong formation, a famous source rock in the south China. Metal deposits are formed during wet gas period, and filled in favorable facies area and sedimentary interface.