The current status of cyclostratigraphy and astrochronology in the Mesozoic
Huang Chunj · Dixue qianyuan · 2014
Accurately determining the geological time is the key to our understanding the Earth's evolutionary history and geologic processes.And how to improve the accuracy of geological time has always been a scientific problem to be solved.The astronomical theory based on the paleoclimate changes has been generally accepted and widely used over the past thirty years.Especially it was successfully applied to the astronomical calibration of the geology time scale.This digital dating method is to obtain a continued high-resolution geological time by astronomical tuning,which is an innovation of the traditional geological dating methods,such as paleontology,paleomagnetism and radioisotope dating methods.An absolute astronomical time scale(ATS)has been calibrated most of the Cenozoic time in the latest international geological chronology of The Geologic Time Scale 2012(GTS2012),however,there is still a challenge for astronomical calibrating the Mesozoic time.Currently,the application of the stable 405ka long eccentricity period to calibrate the Mesozoic Geological time scale is the biggest improvement of the geology time scale from GTS2004to GTS2012.This paper introduces the basic theory of astronomical cycles and its current application status in the Mesozoic.