柴西尕斯库勒地区深部孔隙卤水水化学特征及成因分析

Hydrochemical Characteristics and Genesis of Deep Pore Brine in Gas Hure Area,Western Qaidam Basin

中文关键词:  尕斯库勒  深部孔隙卤水  水化学特征  特征系数  成因分析

英文关键词:Gas Hure  Deep pore brine  Hydrochemical characteristics  Characteristics coefficient  Genetic analysis

中文摘要:

      深部孔隙卤水是近年来盐湖勘查的工作重点。对尕斯库勒地区深部孔隙卤水的离子特征及聚类分析显示,卤水中的K⁺、B₂O₃和Li⁺具有相似的物质来源,且各离子之间具有普遍的相关性；孔隙卤水中的钾、镁、锂具有相对较高的品位,各离子含量普遍呈现一个自南向北增大的趋势,而且上部卤水离子浓度普遍高于下部。尕斯库勒地区北部段深部具有较好的钾、镁、锂找矿前景。根据卤水的特征系数及其在K⁺,Na⁺,Mg²⁺∥Cl-,SO2-₄-H₂O(25℃)介稳相图中的分布,推测尕斯库勒地区深部孔隙卤水的主要来源,既有溶滤表层晶间层的溶滤水,又有深部的沉积水,显示出典型的多源性。

英文摘要:

      Deep pore brine is the key object in recent salt lake exploration.The ionic characteristics and clustering analysis of deep pore brine in Gas Hure area,Qaidam Basin show that the K⁺,B₂O3 and Li⁺in the deep brine have the similar material sources,there is a universal relevance among ions as well.The K⁺,Mg²⁺ and Li⁺ grade of deep brine is relatively high,the ionic contents show an increase tendency from south to north,and the upper part ionic contents are higher than the lower part commonly.In conclusion,the north part of Gas Hure area has a better exploration prospect of K⁺,Mg²⁺ and Li⁺.According to the characteristic coefficients of deep pore brine and the distribution in K⁺,Na⁺,Mg²⁺∥Cl-,SO2-₄-H₂O(25℃) interface stability phase diagram,it is speculated that the typical multi-source of deep pore brine in Gas Hure area include mainly both the lixiviated water which lixiviating surface intercrystalline layer and deep sedimental water.