库车盆地岩盐及卤水地球化学特征及成矿远景分析

The Kuqa Basin rock salt and brine geochemical characteristics and metallogenic potential

在漫长的地质历史时期,库车盆地经历多次大规模的海侵,为其带来了丰富盐类物质,后期又经历了干旱、半封闭的气候环境,广泛发育了膏岩盖层和巨厚的岩盐沉积,具有良好的固体钾盐成矿远景。本文结合前人在成盐地质构造条件、岩相古地理等方面的研究成果,通过对岩盐及卤水样品中的K+含量、Brx103/Cl、Kx103/Cl、K/Br等地球化学数据及参数的对比分析,对区内地球化学综合异常特征和钾盐找矿前景进行了总结和评价。

During the Long geological history, Kuqa Basin experienced several large-scale transgression, which had brought abundant sources of salty materials. Then it suffered from arid and semi-enclosed climatic enviromnent, which leading to the wide range development of cap layer of gypsum rock and giant-thick salt deposits. So Kuqa has been we summarize the research regarded as a favorable and important region to explore solid potash ore. In this paper, conclusions in tectonic conditions of salifying geology and lithofacies palaeogeography. According to the comparison of geochemical data and parameters of rock salt and brine samples in K＋ content, Brx103/Cl , Kx103/Cl and K/Br ,we obtain the district geochemical anomaly characteristics and evaluate the prospects of explore potash ore in Kuqa basin.