Analysis strategies and methods of surface exposure chronology data for Quaternary glaciation
Terrestrial cosmogenic nuclide(TCN)surface exposure dating is the most mainstream and significant methods of determining the age of local or regional Quaternary glaciation.Intense geomorphologic processes of-ten cause samples to be affected by pre-exposure or incomplete exposure,which leads to dating results that are not indicative of the true age of glaciation,and the dispersion of the chronological data can even be very high when their influence is large.Several statistical analyses of moraine exposure dating have been proposed by scholars to reduce their influence.However,the results are often highly variable,which have even become the source of controversy over the asynchronous temporal and spatial patterns of glacial evolution and its driving mechanism.What's more,there is a lack of systematic review and assessment of these methods,both nationally and internationally.In this paper,we aim to review the existing analytical strategies and methods,as well as their possible limitations,and propose a better analytical method.The P-PDE method proposed in this paper is not only reliable,but also fulfils the requirements for establishing glacial evolution sequences on a millennial time scale.In addition,the summary of the strategies and methods of chronological data in this paper is also im-portant for improving the reliability and accuracy of exposure dating for applications in other related fields.
moraineexposure datingtrue exposure ageanalytical strategies and methodsP-PDE
万方数据
维普
