Primary productivity and the Cretaceous/Tertiary boundary event in the oceans

Michael Allan Arthur, J. C. Zachos, D. S. Jones

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

Geochemical and paleontological evidence indicate that marine primary productivity decreased rapidly at the Cretaceous-Tertiary boundary resulting in the selective elimination of those organisms directly dependent upon the flux of organic matter as a food source (filter and suspension feeders). Detritus and deposit feeders, however, suffered relatively fewer extinctions, apparently utilizing the reservoir of organic matter stored within the sediments. Lower rates of oceanic productivity might have continued for at least 1.5 m.y. following the initial decrease despite the rapid evolution of fauna and flora during the early Paleocene. Although these results can be viewed as being compatible with the bolide impact hypothesis, the extended period of low productivity afterwards suggests some longer term effects on the biosphere than predicted by such a model.

Original languageEnglish (US)
Pages (from-to)43-54
Number of pages12
JournalCretaceous Research
Volume8
Issue number1
DOIs
StatePublished - Jan 1 1987

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productivity
ocean
bolide
organic matter
deposit feeder
Paleocene
biosphere
detritus
flora
extinction
fauna
filter
food
sediment
rate
long-term effect
organism

All Science Journal Classification (ASJC) codes

  • Palaeontology

Cite this

Arthur, Michael Allan ; Zachos, J. C. ; Jones, D. S. / Primary productivity and the Cretaceous/Tertiary boundary event in the oceans. In: Cretaceous Research. 1987 ; Vol. 8, No. 1. pp. 43-54.
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Primary productivity and the Cretaceous/Tertiary boundary event in the oceans. / Arthur, Michael Allan; Zachos, J. C.; Jones, D. S.

In: Cretaceous Research, Vol. 8, No. 1, 01.01.1987, p. 43-54.

Research output: Contribution to journalArticle

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