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A tale of two extinctions; converging end-Permian and end-Triassic scenarios

Bas van de Schootbrugge and Paul B. Wignall
A tale of two extinctions; converging end-Permian and end-Triassic scenarios (in Mass extinctions, Bas van de Schootbrugge (prefacer) and Paul B. Wignall (prefacer))
Geological Magazine (March 2016) 153 (2): 332-354

Abstract

The end-Permian (c. 252 Ma) and end-Triassic (c. 201 Ma) mass-extinction events are commonly linked to the emplacement of the large igneous provinces of the Siberia Traps and Central Atlantic Magmatic Province, respectively. Accordingly, scenarios for both extinctions are increasingly convergent and cross-fertilization of ideas has become important. Here, we present a synthesis of extinction scenarios based on a critical assessment of the available palaeontological, sedimentological, geochemical and geophysical evidence. How similar were the extinction events, what gaps exist in our understanding and how can a comparison of the events enhance our understanding of each event individually? Our focus is on the most important proximate kill mechanisms including: climate change and atmospheric pollution; increased soil erosion, weathering and runoff; forest dieback and the spread of pathogens; and ocean temperature changes, anoxia and acidification. There is substantial evidence to suggest that very similar kill mechanisms acted upon late Permian as well as Late Triassic ecosystems, strengthening the hypothesis that the ultimate causes of the mass-extinction events were similar.


ISSN: 0016-7568
EISSN: 1469-5081
Coden: GEMGA4
Serial Title: Geological Magazine
Serial Volume: 153
Serial Issue: 2
Title: A tale of two extinctions; converging end-Permian and end-Triassic scenarios
Title: Mass extinctions
Author(s): van de Schootbrugge, BasWignall, Paul B.
Author(s): van de Schootbrugge, Basprefacer
Author(s): Wignall, Paul B.prefacer
Affiliation: Utrecht University, Institute of Earth Sciences, Utrecht, Netherlands
Affiliation: Utrecht University, Institute of Earth Sciences, Netherlands
Pages: 332-354
Published: 201603
Text Language: English
Publisher: Cambridge University Press, London, United Kingdom
References: 262
Accession Number: 2016-028276
Categories: StratigraphyGeneral paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
N50°43'00" - N50°43'00", W02°55'60" - W02°55'60"
Secondary Affiliation: University of Leeds, GBR, United KingdomUniversity of Leeds, GBR, United Kingdom
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Cambridge University Press. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201614
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