我国白垩纪晚期—古近纪由于燕山运动和喜马拉雅运动,形成了一系列的断陷盆地,金坛盐矿就是该时期始新世中晚期的盐湖沉积。本次研究首次在国内半定量的进行了石盐原生包裹体的分析,发现其中Ca2+缺失而富含SO42-,原始卤水成分为Na-Mg-K-Ca-Cl-SO4体系。
During the late Cretaceous-Tertiary,a series of fault basins were formed because of Yanshanian orogeny and Himalayan orogeny.Jintan Salt Mine is a middle-late Eocene salt lake deposits.In this paper,we reconstruct for the first time in China the chemistry composition of ancient brine using the primary fluid inclusions in halite.The brine in fluid inclusions has little Ca2+ but abundant SO42-,which suggests the ancient salt lake is a Na-Mg-K-Ca-Cl-SO4 system.