The New Tectonic Movement Of Inner Mongolia Greater Khingan Range Chaor River

Study area is located in the northern section of the main ridge and Daxing'anlingwestern slope side.The Quaternary extensive research and development,developmental relatively complete,all of the terrestrial strata.Previous study area Quaternary stratigraphy and paleoclimatic evolution of small,and there is a dispute stratigraphy,chronology divide no accurate dating data,climate data is not very abundant.Therefore it is necessary to carry out the study area is relatively detailed field observations recording systems and indoor data analysis work.This detailed analysis of the study area Quaternary sediments geomorphic characteristics of each period,distribution,lithological characteristics,genetic type and age.Through detailed analysis of the characteristics of Quaternary sediments,dating profile characteristics,and some small amounts of fossil data and other information,to establish a more complete study area Quaternary stratigraphy and discussed the Quaternary era,according to the Some evidence identified the Quaternary era.After the division of the Quaternary good,and with the Pro Quaternary stratigraphic sequence comparison.After the division of the Quaternary good,and with the Pro Quaternary stratigraphic sequence comparison.According to the study area Quaternary sediment characteristics,geomorphological features and a small amount of pollen assemblages recovered Quaternary paleoclimate study area,and analyzes the paleoclimate evolution.Field data collection through field observations and organize the data available,the study area is divided into the Quaternary bottom:Middle Pleistocene clay hill with group Hui River mouth group,Xinsha force group,Zhadun River Formation;next update there Hedong group system,a large black trench set free to cross the river,red trench group;Holocene floodplain deposits with sediments and wind.According to sediment characteristics,combined with some petrographic geomorphology flag,pollen assemblage Holocene climate is characterized by warm and humid-cold and dry-warm and wet-cold and dry,but also with previous studies,the overall trend paleoclimatic evolution coincide.s,restored the Quaternary paleoclimate and paleoclimate evolution:from the Middle Pleistocene climate is cold and dry-warm and wet-cold and dry,which previous studies Quaternary climatic evolution coincide;Late Pleistocene climate overall trend is the evolution from warm to cold,and previous studies of Quaternary paleoclimate evolution remained the same;Holocene climate is characterized by warm and humid-cold and dry-warm and wet-cold and dry,but also with previous studies,the overall trend paleoclimatic evolution ncoincide.