Is there evidence for Cretaceous-Tertiary boundary-age deep-water deposits in the Caribbean and Gulf of Mexico

Gerta Keller, N. Macleod, J. B. Lyons, C. B. Officer

Research output: Contribution to journalArticle

47 Scopus citations

Abstract

Over most of the Gulf of Mexico and Caribbean a hiatus is present between the lower upper Maastrichtian and lowermost Tertiary deposits. Current-bedded volcaniclastic sedimentary rocks at DSDP Sites 536 and 540, which were previously interpreted as impact-generated megawave deposits of K-T boundary age, are biostratigraphically of pre-K-T boundary age and probably represent turbidite or gravity-flow deposits. Absence of continuous sediment accumulation across the K-T boundary in the 16 Gulf of Mexico and Caribbean sections examined prevents their providing evidence of impact-generated megawave deposits in this region. The most complete trans-K-T stratigraphic records may be found in onshore marine sections of Mexico, Cuba, and Haiti. The stratigraphic records of these areas should be investigated further for evidence of impact deposits. -from Authors

Original languageEnglish (US)
Pages (from-to)776-780
Number of pages5
JournalGeology
Volume21
Issue number9
DOIs
StatePublished - Jan 1 1993

All Science Journal Classification (ASJC) codes

  • Geology

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