碳氧同位素水文地球化学方法在找钾中的应用  

APPLICATION OF HYDROGEOCHEMICAL METHOD OF C AND O ISOTOPES TO THE PROSPECTING OF POTASH DEPOSIT

作　　者：虞修竞[1] 夏克勤[1] 贾疏源[1] 

机构地区：[1]成都理工学院,四川成都610059

出　　处：《矿物岩石》2001年第2期84-88,共5页Mineralogy and Petrology

基　　金："八五"国家攻关计划项目 (编号 :85 -90 1-0 6-0 1-0 4)

摘　　要：在系统测定和分析了云南兰坪—思茅盆地调查区盐系地层 ,钾矿层中碳酸盐以及盐系 HCO3-的碳 (1 3C) ,氧 (1 8O)同位素组成的基础上 ,发现了含钾盐泉的同位素组成特征和影响盐泉 HCO3-同位素组成的一些因素。结果确定了对找钾有利的盐泉 ,经与其他找钾方法确定含钾异常有较好的吻合性 ,表明用碳酸盐同位素方法找钾有良好的前景。Based on the measurement and analysis of isotopic compositions of C and O in the salt strata and potash layers in the Lanping Simao basin,the characteristics of isotope of potassium bearing salt springs are recognized and the factors affecting the isotopic composition of salt springs are understood.Accordingly,the salt springs favourable for the formation of potassium are determined.This method tallies with other methods of determining the potash anomaly,and therefore,is of potential for the prospecting of potash deposit.

关 键 词：钾盐 氧同位素 碳同位素 水文地球化学 碳酸岩 找钾前景 

分 类 号：P619.211[天文地球—矿床学] P641.3[天文地球—地质学]