Anoxia pre-dates Frasnian–Famennian boundary mass extinction horizon in the Great Basin, USA

Palaeogeography, Palaeoclimatology, Palaeoecology
By: , and 

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Abstract

Major and trace metal results from three Great Basin stratigraphic sections with strong conodont biostratigraphy identify a distinct anoxic interval that precedes, but ends approximately 100 kyr before, the Frasnian–Famennian (F–F, mid-Late Devonian) boundary mass extinction horizon. This horizon corresponds to the final and most severe step of a more protracted extinction period. These results are inconsistent with data reported by others from the upper Kellwasser horizon in Europe, which show anoxia persisting up to the F–F boundary in most sections. Conditions returned to fully oxygenated prior to the F–F boundary in the study area. These data indicate that the worst part of the F–F extinction was not related directly to oceanic anoxia in this region and potentially globally.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Anoxia pre-dates Frasnian–Famennian boundary mass extinction horizon in the Great Basin, USA
Series title Palaeogeography, Palaeoclimatology, Palaeoecology
DOI 10.1016/S0031-0182(99)00116-9
Volume 154
Issue 3
Year Published 1999
Language English
Publisher Elsevier
Contributing office(s) Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center
Description 28 p.
First page 275
Last page 292
Country United States
State Nevada, Utah
Other Geospatial Great Basin