摘要
陕北奥陶纪盐田是我国重要的成盐盆地之一。在充分分析前人研究工作基础上,结合2015年陕西省第一批地质勘查基金项目《陕西省延川县永坪地区石盐矿普查》成果,从陕北奥陶纪盐田最主要含盐系马家沟组马五段马五4和马五6两个最主要含盐系的剖面岩石组合、沉积厚度、盐类矿物组成、主要化学成分、微量元素变化及含盐系形态变化等方面对其进行了较深入的分析研究和介绍,对陕北奥陶纪盐田各含盐系的保存条件进行了总结,并指出陕北盐盆西南部边缘次级凹陷可能为今后盐盆钾盐找矿的重点区域。
The Ordovician salt field in Northern Shaanxi is one of the important salt basins in China. This article is based on a thorough analysis of predecessors’ research work. Combined with the results of the first batch of geological survey funds in Shaanxi Province in 2015,the general survey of stone salt mines in Yongping county,Yanchuan county,Shaanxi province.This article have been analyzed and introduced on the rock composition,sedimentary thickness,composition of salt minerals,main chemical composition,and changes in trace elements and morphological changes in salt-containing systems of the two major salt systems member 5^4 and 5^6 in Majiagou Formation. Summarizes the preservation conditions of the salt systems in the basin. Pointed out that the secondary depression on the southwest edge of the northern Shaanxi salt basin may be a key area for prospecting potash salt in the future.
作者
崔拥军
CUI Yong-jun(Shaanxi Branch of China Geological Exploration Center of Building Materials Industry,Xi'an 710003,China)
出处
《甘肃冶金》
2019年第1期59-64,共6页
Gansu Metallurgy
关键词
盐田
含盐系
奥陶纪
陕北
salt field
salt-bearing
ordovician
northern Shaanxi
