The source and fate of massive carbon input during the latest paleocene thermal maximum

Miriam E. Katz, Dorothy K. Pak, Gerald R. Dickens, Kenneth G. Miller

Research output: Contribution to journalReview articlepeer-review

303 Scopus citations

Abstract

Lithologic, faunal, seismic, and isotopic evidence from the Blake Nose (subtropical western North Atlantic) links a massive release of biogenic methane ~55.5 million years ago to a warming of deep-ocean and high-latitude surface waters, a large perturbation in the combined ocean-atmosphere carbon cycle (the largest of the past 90 million years), a mass extinction event in benthic faunas, and a radiation of mammalian orders. The deposition of a mud clast interval and seismic evidence for slope disturbance are associated with intermediate water warming, massive carbon input to the global exogenic carbon cycle, pelagic carbonate dissolution, a decrease in dissolved oxygen, and a benthic foraminiferal extinction event. These events provide evidence to confirm the gas hydrate dissociation hypothesis and identify the Blake Nose as a site of methane release.

Original languageEnglish (US)
Pages (from-to)1531-1533
Number of pages3
JournalScience
Volume286
Issue number5444
DOIs
StatePublished - Nov 19 1999

All Science Journal Classification (ASJC) codes

  • General

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