摘要
本文对世界现代陆相盐湖蒸发岩的分布特点、形成环境和成盐机制进行了探讨。总结了近年作者发现的几种罕见盐类的形成条件、分布规律,为预测其新产地提供了信息;揭示了蒸发岩形成过程与卤水介质pH值、矿化度之间的内在联系及其影响因素;对成盐作用的主要外界因素总结为两种途径,并用自然界的实际资料和实验结果加以论证。
This paper is concerned with the distribution of modern continental evaporites and their forming environments. The Qinghai-Xizang (Tibet) Plateau is the most important saltforming site for various evaporites. Lithium is enriched not only in brines, but also in solid salts. Studies of the forming environments of antarcticite and sulphohalite permit us to predict their new depositing locations. We have discovered hydroglauberite in many locations on the Qinghai-Xizang (Tibet) Plateau which is the only location where hydroglauberite can be found in modern continental evaporitesRelations have been established between the pH of brines and the depositional type of evaporites. A negative correlation is also noticed between the pH value of brines and their salinity.There are two major factors leading to the formation of salt: evaporite concentration and brine blending. Evidence developed from field observations and lab work lends strong support to the above conclusion.
出处
《地球化学》
CAS
CSCD
北大核心
1990年第4期333-339,共7页
Geochimica
