Testing for causal relationships between large pyroclastic volcanic eruptions and mass extinctions

Details Testing for causal relationships between large pyroclastic volcanic eruptions and mass extinctions Testing for causal relationships between large pyroclastic volcanic eruptions and mass extinctions

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19..893e&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 19, no. 9, May 4, 1992, p. 893-896. Research supported by NSF.

Mathematics

Logic

4

Biometeorology, Climate Change, Effusives, Extinction, Paleontology, Volcanology, Biological Evolution, Cenozoic Era, Mesozoic Era, Paleoclimatology

Scientific paper

To study the connection between volcanism and mass extinction, an approach is employed to identify large pyroclastic eruptions with well-constrained age determinations, and evaluate the fossil record for evidence of significant regional or global extinctions. The largest, best constrained pyroclastic events known, i.e., Toba Tuff, Huckleberry Ridge Tuff, Tuff of Blacktail and the Elkhorn Mountain volcanics are selected for this evaluation. Neither global or regional terrestrial vertebrate diversity nor global marine diversity exhibit any biological effect from these extremely massive pyroclastic eruptions. It is concluded that massive pyroclastic eruptions are unlikely to have been an effective cause of mass extinctions.

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