Catastrophic extinction of Caribbean rudist bivalves at the Cretaceous-Tertiary boundary

Thomas Steuber, Simon F. Mitchell, Dieter Buhl, Gavin Gunter, Haino U. Kasper

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

Abstract

Strontium isotope ratios (87Sr/86Sr) in pristine low-Mg calcite of shells of rudist bivalves from the Titanosarcolites limestones exposed in the Central, Maldon, and Marchmont inliers of Jamaica indicate that species-rich rudist-coral associations persisted into the latest Maastrichtian (66-65 Ma). This finding contradicts the currently accepted hypothesis of stepwise extinction of rudist bivalves in the middle Maastrichtian and argues for a catastrophic, impact-related demise of Caribbean Cretaceous reefal ecosystems at the Cretaceous-Tertiary boundary.

Original languageBritish English
Pages (from-to)999-1002
Number of pages4
JournalGeology
Volume30
Issue number11
DOIs
StatePublished - Nov 2002

Keywords

  • Chemostratigraphy,Sr/Sr
  • Cretaceous-tertiary boundary
  • Jamaica
  • Maastrichian
  • Rudists

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