Age Determination Of Neoproterozoic In The Area Of The Xinjiang Area

The sequence of the South China and Sinian strata in theXinjiangNeoproterozoic ququg region is fully developed,and the contact relationship between the top and the bottom is obvious.The sequence of the Kuru qtag group is further perfected,and it is of great significance in the process of earth evolution.It is well known that the formation of the strata of the Kuru qtag group in Xinjiang is very well developed,and the stratigraphic sequence,volcanic events,moraine events,sedimentary times and lithostratigraphy are always the concern of geologists,but there is no unified understanding of the stratigraphic determination,time division and formation mechanism of the Neoproterozoic.In this paper,through the systematic collection of field measured geological profiles,the age determination of SHRIMP206Pb/238U in the volcanic rocks in the qreqatg group,the use of previous paleo microflora study,and the study of the glacial sedimentary age are used to study the chronological stratigraphy,and the stratigraphic sequence,volcanic events and Moraine in the study area are basically determined.The formation mechanism of events,sedimentary ages,time series and sedimentary evolution.The geological problems of the incomplete stratigraphic sequence of the Kuru KTG group were solved,and the Nanhua and Sinian Ji Bingchuan deposits were determined to be 4 glacial periods and 3 interglacial periods,and it was found that the Nanhua and Sinian volcanic rocks could be divided into the eruption period of bainixi,the eruption period of Altun gully,the time of the jet of the saamokite and the eruption period of the water spring.It is of great significance to further study the stratigraphic sequence,volcanic events and moraine events in the area.