The End of the Cretaceous: Sharp Boundary or Gradual Transition?
- 16 March 1984
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 223 (4641), 1183-1186
- https://doi.org/10.1126/science.223.4641.1183
Abstract
Evidence indicates that the Cretaceous-Tertiary boundary is very sharp, and, within the limits of resolution, it is apparently synchronous at the various boundary localities. Arguments to the contrary, particularly those of Officer and Darke, are shown to invalid.Keywords
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