四川盆地某地富矿卤水水文地球化学特征及其成因资源意义
HIGH-GRADE BRINE IN THE SICHUAN BASIN: HYDROGEOCHEMISTRY,ORIGIN AND ITS RESOURCE SIGNIFICANCE
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摘要: 四川盆地某地富矿卤水以深层卤水形式赋存于地下4000余米深的中三叠统雷口坡组四段（T2l4）盐系的碳酸盐岩储层中。富矿卤水与海水各浓缩阶段相比,其中K+含量异常高,构成世界罕见的液态钾盐资源;Br-、I-、B3+、Li+等有用组分也远远超过综合利用工业品位,为优质化工原料水.富矿卤水为沉积变质和钾盐溶滤的复合成因,具有资源及固液态钾盐找矿的指示意义。本文为四川某地固液态找钾提供了有价值的线索。Abstract: The high-grade brine recognized somewhere in the Sichuan Basin are hosted in the evaporite-bearing carbonate reservoirs in the fourth member of the Middle Triassic Leikoupo Formation (T2l4),more than 4,000 m below the surface. The findings of the study suggest that the brines as the rare liquid potash resources and high-grade commercial minerals not only contain extremely large amount of potassium, as compared with those in different concentration stages of sea water, but also have much higher contents of Br, I, B and Li than the pay grades for comprehensive utilization. The brine originated from the metagenesis and dissolution of potash minerals indicate the possibility in the search for solid and liquid potash in the Sichuan Basin.
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Keywords:
- hydrogeochemistry /
- metagenesis /
- dissolution of potash minerals /
- highgrade brine /
- Sichuan Basin
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