摘要
安徽新桥铜硫矿床的主要矿体呈似层状赋存于上石炭统黄龙组下部，矿石的Rb－Sr等时线年龄为313.2士32．7Ma，Ph－Ph等时线年龄为290±10Ma。锶和铅同位素组成反映成矿物质主要来自上地壳（地层）。矿床主要由海西期沉积成矿作用形成，后来受到了燕山期岩浆活动迭加改造。
The Xinqiao Cu-S deposit is onc of Cupriferous pyrite deposits in the Cu-Fe multboetalMetallogenic belt in the Middle-Lower Yangtze arca. The ore bodies are stratiform and occur inthe lower member of the Huanglong formation of upper Carboniferous. The ore bodies are be-ded and consistent with the beds of the stratigraphy. The age of Rb-Sr isochron of the orebodies is 313. 2±32. 7 Ma,and that of Pb-Pb isochron is 290±10Ma. The Sr and Pb isotopecomposition shows that thc ore-forming materials mainly came from the upper crust (strata).The deposit was directly formed by sedimentation in the Hercynian period and was superim-posed and tranformed by the Yanshanian magmatism.
出处
《火山地质与矿产》
1995年第2期101-107,共7页
Volcanology & Mineral Resources
基金
国家自然科学基金!490272101
国家攀登项目!30-12
