论四川盆地三叠系盐类变质作用及找钾方向  

METAMORPHISM OF TRIASSIC SALT DEPOSITIONS IN SICHUAN BASIN AND ITS GUIDE TO PROSPECTING FOR POTASH RESOURCES

作　　者：林耀庭 

机构地区：[1]西南石油地质局第二地质大队

出　　处：《化工矿产地质》1995年第2期93-102,共10页Geology of Chemical Minerals

摘　　要：四川盆地三叠系盐类在地质历史时期中经受强烈的热融、水溶变质作用及叠加影响，已使原始盐类沉积发生深刻变化。现剖面上所见硬石膏、杂卤石、多钙钾石膏和无水钾镁矾等矿物多系热融、水溶变质产物。由此导致固体钾矿的溶滤破坏，钾组分转入液相，形成液态钾矿（富钾卤水）。面对这一现实，理顺和拓宽四川找钾思路，开辟液态钾矿的找矿工作，是四川找钾工作至为重要的找钾新方向。Abstract In long geological post,Triassic salt despitions in Sichuan basin involved strong thermo-and water-metumorphism, along with effection from overprinting, until the origional regime of despition deeply changed. According to studies on cross sections many salt minerals such as anhydrite, polyhalite, polycalcic syngenite, langbeinite,etc, are all attributed to those metumorphisms, strong enough to convert the solid petussium-bearing sediments into liquid POtassium--rich brine. Considering this conversion, the guide to prospecting for potash resources in Sichuan basin should be pointed to polish despitions of liquid phase after clearing and expanding the train of thought about execrating potash.

关 键 词：三叠纪 盐类物质 变质作用 钾盐 四川盆地 

分 类 号：P619.211[天文地球—矿床学]