Controlled Drilling Quaternary Pollen Composition and Evolution of Ancient Climate and Environment of Xingtai Purple Mountain West Fault

In this paper, we analyze the assay results of pollen samples in controlled drilling in Xingtai Purple Mountain west fault according to thir main pollen type combinations and ingredients change. Combining with comprehensive analysis of the lithology, facies, sequence and TL dating data of of the stratigraphic section cores uncovered through the controlled borehole, the pollen samples are divide into five pollen combinations. According to the pollen features of the five pollen combinations, we obtain the paleoclimate characteristic and its changing process in Xingtai area since the Quaternary.