摘要
本文系统地研究了康滇地轴东缘不同时代岩石及不同含矿层位铅锌矿石的稀土元素地球化学特征 ,并加以对比。认为本区地壳演化的不均一性及多期构造岩浆活动反映在不同时代岩石其稀土元素地球化学特征也不相同 ,继承性差。本区矿石的稀土元素分布模式不同于以前报道过的呈W型 ,而是一种新的稀土元素分布模式。不同含矿层位铅锌矿石稀土元素分布模式及其参数类似 ,与岩石差异明显 ,说明主要成矿物质不来自基底及盖层岩石 ,而来自深部 (上地幔 ) ,并且是在同一个成矿期形成的。
The REE geochemical characteristics of rocks and lead\|zinc ores of different ages at the eastern margin of the Kangdian Axis show that the rocks from different strata have different REE characteristics but the lead\|zinc ores from different strata have similar REE specialities, and the REE distribution patterns of the rocks are not the same as those of the lead\|zinc ores, demonstrating that the crust evolution in this area is heterogenous in nature and major ore\|forming materials came from the upper mantle, and lead\|zinc mineralization took place in the same period of metallogenesis.\;
出处
《地质地球化学》
CSCD
北大核心
1999年第3期5-16,共12页
Geology-Geochemistry
基金
地矿部地质行业定向基金资助
关键词
康滇地轴
岩石
铅锌矿石
成矿
稀土族
地球化学
eastern margin of Kangdian Axis
rock and lead\|zinc ore
the same source and period of metallogenesis
