Characteristics of Geochemical Element and Paleoclimate Effect——A Case Studying of Duanjiapo Section During Late Neogene and Quaternary, in Lantian, Shaanxi

The variation of geochemical element in section can reflect the paleoclimate circum stance in the course of sedimentary.Through systematically analyzing 30 pieces of samples collected from Duan jiapo section,we conclude that there is an obvious catastrophe point for every kinds of elements.Content of element has a great change from 0.57Ma to 0.37MaB.P,but keep unchanged around 0.37Ma. Paleoclimate have changed from the cold-warm fluctuation and total warmand moist to dry-cold climate from 0.57Ma to 0.37Ma B.P and from 0.37 Ma to 0.13Ma B.P and 0.13 Ma to 0.01Ma B.P,the change suggests that the variation trend of paleoclimate is from one geologicera to another. The result from element is not only identical to those from deep sea oxygen isotope,ancient vegetation,and paleoclimate but also consistent with MILAN KOV ITCH period.