论文部分内容阅读
引言许多学者研究过白云岩中Sr 的丰度。这些研究工作的主要目的旨在运用白云岩中Sr的含量以解释白云岩的形成环境。但是自然环境中哪些是沉积白云岩的水体却很难辨识,而且,在正常沉积条件下在实验室中尚未沉淀出白云岩来,因此我们对白云岩中微量元素分布特征的认识是很有限的。鉴于这些原因,至今尚未精确确定Sr 在白云岩中的分配系数D_(Sr)白云岩。目前,使用以往文献资料推荐的D_(Sr)白云岩数值范围来预测白云岩中的Sr 含量,结果误差很大,通常不是接近就是超过大多数白云岩中实测的Sr 含量范围。可见,自然环境
Introduction Many scholars have studied the abundance of Sr in dolomites. The main purpose of these research efforts is to use the content of Sr in dolomite to explain the formation of dolomite environment. However, it is very difficult to identify which sediments of dolomite are in the natural environment. In addition, dolomite has not precipitated in the laboratory under normal sedimentary conditions. Therefore, our understanding of the distribution characteristics of trace elements in dolomites is very limited . For these reasons, the distribution coefficient of Sr in dolomite, D_ (Sr) dolomite, has not yet been precisely determined. At present, the prediction of Sr content in dolomite using the D_ (Sr) dolomite value range recommended by previous literature results in a large error, usually not close to or exceeding the measured Sr content in most dolomites. Visible, natural environment