2025-11-01 10:24 浏览次数 9
前泥盆纪
the results of trace element analysis of regional stratigraphy show that slightly metamorphosed pre devonian clastic rocks are main source strata for gold and antimony deposits.
区域地层巖石中微量元素分析结果显示,前泥盆系浅变质碎屑巖是主要的矿源层。