摘要
应用构造作用力影响静水压力的理论,用构造校正方法,测算了玲珑-焦家式金矿的成矿深度。焦家金矿Ⅰ、Ⅱ号矿体形成深度为2243.6m±,Ⅰ号矿体脉群形成深度为1632.4m±(105Ma±),玲珑金矿四个成矿阶段的深度分别是3455m±(213Ma±),1914.4m±(100.28Ma士),1091m士(80.67Ma士)和721m±(71.86Ma±)。这些结果已被近年深部第二富集带新增储量数百吨所初步证实,表明胶东金的成矿作用,主要与燕山期基底逐渐上隆及反时针区域压剪的大地构造环境有关。
The depths for the formation of typical Lmglong-Jiaojia style gold deposits were estimated using the theory of influence on the hydrostatic pressure by the tectonic force and the method of tectonic correction. For the Jiaojia gold deposit, orebodies I and II were probably formed at a depth of 2243. 6 m± and ore vein swarm III was formed at about 1643. 4 m (105 Mai). In three structural zones of the Linglong gold field, the depths of ore dormation in four mineralization stages appear to be 3455 m± (213 Ma), 1914. 4 m± (100. 28 Ma±), 1091. 0 m± (80. 67 Ma±) and 721. 0 m± (71. 86 Ma±) respectively.Those research results have been verified by finding a few hundred tons of additional gold reserves in the second concentration zone at depth in recent years. It shows that the mineralization of Jiaodong gold deposits is related mainly to gradual basement uplifting and regional anti-clockwise shearing in the Yanshanian period.
出处
《地质论评》
CAS
CSCD
北大核心
1996年第6期550-559,共10页
Geological Review
基金
国家科委基础研究项目(国科高字〔1994〕83号文)
国家计委国土地区司资助项目(JG947110)
关键词
金矿床
成矿
深度研究
成矿深度
tectonic hydrostatic pressure, formational depth, Linglong-Jiaojia style gold deposit, tectonophysical chemistry
