洪泽盐盆赵集次凹古盐岩地球化学研究

Geochemical Research on Ancient Salt Rock in Zhaoji Sag, Hongze Basin

关于洪泽盐盆赵集次凹中沉积的阜宁组四段盐岩的成因,目前多有争议,对成盐物质来源的限定显得尤为重要。本文通过对赵集次凹两个钻井岩芯的微量元素地球化学研究,结合测井资料、沉积特征以及孢粉化石资料等,发现盐类物质主要来源于邻区淮安凸起,但是残余海侵水也是盐类来源的重要一部分,因此具有一定的找钾前景。

There are debates about the genesis of the salt rock in member 4 of Funing Formation from Zhaoji Sag, Hongze Basin. Therefore, it is really important to confine the source of the salt. In this paper, we analyzed trace element concentrations of salt rock samples collected from two drill cores in the Zhaoji Sag. Combined with the geology and sedimentary characteristics and fossil research by previous literature, we believe that the salt was mainly from the neighbor Huaian uplift while seawater also played an important role in this process. Therefore, it is possible to find potassium deposit in this area.