Trace elements displayed different geochemical characteristics in the horizontal and vertical of the basin, siderophile elements showed enrichment in Dongsheng District and poor in Zhenyuan District.

• 3、微量元素在盆地内横向和纵向上显示出不同的地球化学特征,东胜区亲铁元素显示出富集状态,而镇原区则呈现出了贫化特征;