Discovery of the Ca-Cl type brine in deep aquifers and implications for the shallow giant glauberite deposits in the Lop Nur playa,Tarim Basin,NW China
Discovery of the Ca-Cl type brine in deep aquifers and implications for the shallow giant glauberite deposits in the Lop Nur playa,Tarim Basin,NW China
1.Objective
Lop Nur is currently one of the world 's largest playa and located in the easternmost of the Tarim Basin,northwestern China.It developed unique giant glauberite deposits during the Quaternary,of which analogue with such a scale deposit is rarely seen around the world.Moreover,potassium-rich brine hosted in these glauberite intercrystalline contains a resource of KCl up to 0.25×109 t,supporting the operation of the global largest plant for K2SO4 fertilizer in Lop Nur.It was generally thought that salt materials such as K+,SO24?,and Ca2+ for glauberite deposits and the related potassium-rich brine in Lop Nur mainly originate from river water in the Tarim Basin,due to Lop Nur served as a terminal lake of the basin during the Quaternary (Fig.1).
Discovery of the Ca-Cl type brine in deep aquifers and implications for the shallow giant glauberite deposits in the Lop Nur playa,Tarim Basin,NW China