biostratigraphy
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Table of Contents
Biostratigraphy
Biostratigraphy has a fairly simple premise…
It is less amusingly defined as…
“The separation and differentiation of rock units on the basis of the description and study of the fossils they contain” Glossary of Geology. Bates & Jackson. 1980
What “makes biostratigraphy work” is evolution. Species evolve into new forms and have a measurable period of existence before becoming extinct. Each species has a discreet inception and extinction in geologic time. Therefore, periods of geologic time may be characterised by the presence (or absence) of a species, the co-existence of several species or their abundance (see below).
biostratigraphy.1679299815.txt.gz · Last modified: 20/03/2023 08:10 by mike_gss