摘要
早石炭世大哈拉军山组是西天山地区与成矿关系密切的地层之一,查明其古沉积环境,对于区域找矿规律的研究、找矿方向的确定具有十分重要的意义。根据沉积、构造、古生物、流体等的研究,对大哈拉军山组火山岩的沉积环境进行了讨论,指出大哈拉军山组为陆相喷发的产物。通过地层微量元素特征的对比研究,发现微量元素在围岩、蚀变岩、矿石三者间有规律地变化,认为大哈拉军山组是阿希型金矿的主要矿源层。
Dahalajunshan Formation is one of the strata related with metallogeny in the west Tianshan orogenic belt. Sedimentary environment research will be helpful for the studying of ore-controlling regularities and exploration direction. This paper discusses the sedimentary environment and mineralization of Dahalajunshan Formation on the base of research on sedimentology, tectonics, fossil record, fluid and microelement geochemistry. It is showed that Dahalajunshan Formation was formed in continental eruption environment, and was the main source bed of Axi type gold deposits.
出处
《地质与勘探》
CAS
CSCD
北大核心
2003年第2期1-5,共5页
Geology and Exploration
基金
中国地质调查局项目(编号:200215000008)资助。
