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Book Chapter

Boundaries; A stratigraphie and sedimentologie perspective

By
Joanne Bourgeois
Joanne Bourgeois
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Published:
January 01, 1990

This chapter is written principally with respect to the Cretaceous/Tertiary boundary, but the specific examples given may be generalized to other boundaries of interest. Three issues are addressed: (1) the nature and definition of a stratigraphic boundary, (2) the difficulty in assigning an absolute age to that boundary, and (3) the pitfalls in determining the time span represented by strata bracketing a boundary. Whereas stratigraphic conventions are required to attack many problems, needless arguments are generated when more attention is paid to formal definition than to the scientific question at hand, and the problems generated by various models for boundary events can only be addressed with some understanding of the above three issues.

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GSA Special Papers

Global Catastrophes in Earth History; An Interdisciplinary Conference on Impacts, Volcanism, and Mass Mortality

Virgil L. Sharpton
Virgil L. Sharpton
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Peter D. Ward
Peter D. Ward
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Geological Society of America
Volume
247
ISBN print:
9780813722474
Publication date:
January 01, 1990

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