The Study Of Environment Evolution Of Jinyuan Hole's Red Clay Grain Size And Geochemical Characteristics In Fuzhou Bay,Dalian

Jinyuan hole state in Camel Hill,in the southwest of liaodong Peninsula.There is a large number of mammalian paleontology fossil which liking for warmth,and it's same with the uncontinuous sequence fossil of Zhoukou in Beijing.It may be the evidence of ancient human appearance.Therefore,it's a great significance to make sure of the grain size,geochemistry and the distribution of fossils of red clay to study the evolution and changes of climate and environment-Through the study from above thing of red clay of Jinyuan hole,there are following conclusions:?1?From the point of the composition of red clay,the major fraction of red clay is 0.004mm?0.063mm,which average is 55.10%,and the slimsy one is more than the coarse one;the next<0.004mm is fraction;0.063mm?2mm is least;The wind substantially granule with an higher average of 31%.It is suggesting that the earliest source material removal from the air force and subsequently experienced a transformation of the of water,but due to weak hydrodynamic transport,short distance,the composition of deposits did not change significantly.?2?From the point of the geochemical characteristics of red clay,SiO2?Al₂O₃?Fe₂O₃?CaO content higher,they add for 83.77%.The main elements of Si?Fe?K?Mg?Na is relatively wet,Al?Ti relative enrichment;Trace element P?Mn?Zr?Rb?Cr?Cu?Ni relative enrichment.Comprehensive analysis of the various geochemical parameters from the point of view,they indicate the same environmental change,and they can be speculated that warming temperatures substantially about three time.?3?From the point of the mammal fossils of red clay.Fossil has been handling burial formed,distribution characteristics distinct bands.Some warm-animal fossils like Palaeoloxodon,Trogontherium cf.Cuvieri and Macacus Robustus.These fossils indicate that the climate was warm and humid,lush vegetation,water development,the growth of large-leaved forests.