地球系统科学时代的高分辨综合地层学

High resolution integrated stratigraphy in the age of Earth system science

高分辨年代地层系统是地球系统科学研究的基础。高分辨综合地层学试图建立分辨率小于一个生物带的地层单元并使地层对比的误差小于一个生物带。本文将目前用于建立年代地层系统的方法划分为三类:生物地层学、现代地层学的不同分支学科和同位素年代地层学,讨论了不同地层学方法的优势和不足。任何一种地层学方法的分辨率都是有限的,综合地层学为实现地层高分辨划分和高精度对比提供一个有效的途径。生物地层建立可信的相对年代地层格架,现代地层学手段有助于实现高分辨划分和高精度对比,同位素年代地层学赋予生物地层界线和其他地层界线绝对年龄。三者结合共同构成了高分辨综合地层学。

High resolution chronostratigraphic system is the foundation for the research of Earth system science.High resolution integrated stratigraphy makes an attempt to establish high resolution stratigraphic framework with resolution less than a biozone both for a stratigraphic unit and for the correlation error of a stratigraphic boundary.In the present paper the stratigraphic methods are divided into 3kinds generally used to establish chronostratigraphic system.They are biostratigraphy,the various subdisciplines of modern stratigraphy,and isotope chronostratigraphy.Their advantages and disadvantages of the 3kinds of stratigraphic methods are discussed.It is considered that the resolution of any kind of stratigraphic method is limited,and the integrated stratigraphy may provide an effective approach for the high resolution division and high precision correlation of strata.Biostratigraphy is used to establish a believable relative chronostratigraphic framework,the subdisciplines of modern stratigraphy contribute the high resolution division and high precision correlation of strata,and isotope chronostratigraphy gives absolute age of both biostratigraphic boundaries and other kinds of stratigraphic boundaries.The combination of all three（biostratigraphy,modern stratigraphy and isotope chronostratigraphy）commonly constitutes high resolution integrated stratigraphy.