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Terrestrial acidification during the end-Permian biosphere crisis?

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Title: Terrestrial acidification during the end-Permian biosphere crisis?
Authors: Sephton, MA
Jiao, D
Engel, MH
Looy, CV
Visscher, H
Item Type: Journal Article
Abstract: Excessive acid rainfall associated with emplacement of the Siberian Traps magmatic province is increasingly accepted as a major contributing factor to the end-Permian biosphere crisis. However, direct proxy evidence of terrestrial acidification is so far not available. In this paper, we seek to determine the probability that relative proportions of extractable monophenolic components from soil-derived organic matter in marine sediments provide a molecular proxy for estimating soil acidity. Intermittently low and high ratios of vanillic acid to vanillin detected in latest Permian and earliest Triassic deposits of the southern Alps, Italy, support concepts of pulses of severe acidification (pH <4) during the main phase of the biosphere crisis.
Issue Date: 7-Jan-2015
Date of Acceptance: 2-Dec-2014
URI: http://hdl.handle.net/10044/1/31566
DOI: 10.1130/G36227.1
ISSN: 1943-2682
Publisher: Geological Society of America
Start Page: 159
End Page: 162
Journal / Book Title: Geology
Volume: 43
Issue: 2
Copyright Statement: © 2015 Geological Society of America
Keywords: Science & Technology
Physical Sciences
Geology
POLYCYCLIC AROMATIC-HYDROCARBONS
TRIASSIC BOUNDARY
ACID-RAIN
SOIL
SEDIMENT
VANILLIN
GROWTH
DEGRADATION
EXTINCTION
DEPOSITION
Geochemistry & Geophysics
04 Earth Sciences
Publication Status: Published
Open Access location: http://geology.gsapubs.org/content/43/2/159.full
Online Publication Date: 2015-01-07
Appears in Collections:Earth Science and Engineering
Faculty of Engineering