Recent developments in quantitative stratigraphy

摘要: Abstract During the past 10 years, about 150 scientists in 25 countries have collaborated under auspices of International Geological Correlation Programme Project No. 148: Evaluation and Development Quantitative Stratigraphical Techniques. This paper reviews mathematical methods stratigraphical correlation, mainly biostratigraphy but also chronostratigraphy lithostratigraphy. Sequencing treat relative order stratigraphic events such as highest occurrences fossil taxa observed many sections. Intervals between successive an ordered sequence can be estimated results expressed linear time if a subgroup dated. Recently been used to develop new deep-water benthic foraminiferal zonation for Cenozoic strata Central Viking Grabens, North Sea. Several regional hiatuses 2 5 m.y. duration, recognized matched changes sea level. The same automated isochron contouring with error bars depth or units Cretaceous basins, off eastern Canada. Such information may basin history analysis. Time-successive assemblages fossils established by using multivariate applied co-occurrences method unitary associations conjunction graph-theory on overlap ranges. Other correlation reviewed this include composite standard estimation age chronostratigraphical boundaries maximum likelihood cubic spline interpolations. Attractions quantitative stratigraphy are use rigorous methodology which highlights properties data, ability handle large complex data bases objective manner, statistical evaluation uncertainty results. Generally, little conceptual orientation is required these thereby gain more from particular dataset.