SUMMARY OF STRATIGRAPHY

Source: http://sun1.bham.ac.uk/M.J.Welch/SGCB/st&st.html Click on this image to expand.

Stratigraphy forms the basis of all historical reconstruction. It represents the study of the Earth's history as recorded in sedimentary rocks. Since its inception, biostratigraphy has been the most valued and applied field of stratigraphy.