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- Title
Evidence of changes in surface water temperature and productivity at the Cenomanian/Turonian Boundary.
- Authors
Eleson, Jason W.; Bralower, Timothy J.
- Abstract
Calcareous nannofossil assemblages were investigated across the Oceanic Anoxic Event (OAE) at the Cenomanian/Turonian Boundary (CTB) in a section from the Western Interior Basin and a borehole from the New Jersey coastal plain. The objective was to determine the surface-water response to environmental perturbations during the OAE. A decrease in surface water fertility at the two localities is suggested by an increase in relative abundances of taxa with oligotrophic affinities and a concomitant decrease in taxa with mesotrophic or eutrophic affinities. Oligotrophy and anoxia at both localities are likely responses to increased water-column stratification associated with the incursion of warmer waters from lower latitudes.
- Subjects
NEW Jersey; NANNOFOSSILS; GEOLOGICAL basins; WATER temperature; EUTROPHICATION; HYPOXEMIA
- Publication
Micropaleontology, 2005, Vol 51, Issue 4, p319
- ISSN
0026-2803
- Publication type
Article
- DOI
10.2113/gsmicropal.51.4.319