THE development of reliable methods of world-wide stratigraphic correlation involves the gradual replacement of empirical and traditional ‘index fossils’ by zonal index species selected on the basis ...

The Carboniferous period is pivotal in the geological record, marked by intricate stratigraphic sequences and diverse microfossil assemblages that reveal past environmental conditions and tectonic ...

Biostratigraphy is a stratigraphic discipline that uses the vertical and lateral distribution of fossil organisms within sedimentary successions to establish relative ages, correlate stratigraphic ...

Geologic assessment of active tectonism depends on two key measures: the age and the amount of deformation of a given stratigraphic unit. The amount of deformation can normally be measured with ...