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Catastrophic extinction of Caribbean rudist bivalves at the Cretaceous-Tertiary boundary
Thomas Steuber, Simon F. Mitchell, Dieter Buhl, Gavin Gunter and Haino U. Kasper
Catastrophic extinction of Caribbean rudist bivalves at the Cretaceous-Tertiary boundary
Geology (Boulder) (November 2002) 30 (11): 999-1002
Catastrophic extinction of Caribbean rudist bivalves at the Cretaceous-Tertiary boundary
Geology (Boulder) (November 2002) 30 (11): 999-1002
Index Terms/Descriptors
- alkaline earth metals
- Antilles
- biochemistry
- Bivalvia
- calcite
- carbonate rocks
- carbonates
- Caribbean region
- catastrophes
- Cenozoic
- Cretaceous
- ecosystems
- Greater Antilles
- Heterodonta
- Invertebrata
- isotope ratios
- isotopes
- Jamaica
- K-T boundary
- limestone
- lower Paleocene
- Maestrichtian
- mass extinctions
- Mesozoic
- metals
- Mollusca
- paleo-oceanography
- Paleocene
- paleoecology
- Paleogene
- reef environment
- Rudistae
- sedimentary rocks
- SEM data
- Senonian
- shells
- Sr-87/Sr-86
- stable isotopes
- stratigraphic boundary
- strontium
- Tertiary
- Upper Cretaceous
- upper Maestrichtian
- West Indies
Latitude & Longitude
Abstract
Strontium isotope ratios ( (super 87) Sr/ (super 86) Sr) 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.
ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 30
Serial Issue: 11
Title: Catastrophic extinction of Caribbean rudist bivalves at the Cretaceous-Tertiary boundary
Affiliation: Ruhr Universitaet, Institut fuer Geologie, Mineralogie und Geophysik,
Bochum,
Federal Republic of Germany
Pages: 999-1002
Published: 200211
Text Language: English
Publisher: Geological Society of America (GSA),
Boulder, CO,
United States
References: 28
Accession Number: 2002-079178
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Annotation: With GSA Data Repository Item 2002118
Illustration Description: illus. incl. 1 table, sketch map
N18°08'60" - N18°19'60", W78°13'60" - W77°22'00"
Secondary Affiliation: University of the West Indies,
JAM,
JamaicaUniversitaet zu Koeln,
DEU,
Federal Republic of Germany
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 200224
