P. Wignall

Publications336
h-index68
Citations16,782
Highly Influential Citations912
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Large igneous provinces and mass extinctions
Comparing the timing of mass extinctions with the formation age of large igneous provinces reveals a close correspondence in five cases, but previous claims that all such provinces coincide with…
Mass Extinctions and Their Aftermath
TLDR
In this text the demise of the dinosaurs is put into the proper context of other extinction events and all proposed extinction mechanisms - climate change, meteorite impact, volcanisms - are critically assessed.
Lethally Hot Temperatures During the Early Triassic Greenhouse
TLDR
It is shown that the end-Permian mass extinction coincided with a rapid temperature rise to exceptionally high values in the Early Triassic that were inimical to life in equatorial latitudes and suppressed ecosystem recovery.
Oceanic Anoxia and the End Permian Mass Extinction
Data on rocks from Spitsbergen and the equatorial sections of Italy and Slovenia indicate that the world's oceans became anoxic at both low and high paleolatitudes in the Late Permian. Such…
Rapid and synchronous collapse of marine and terrestrial ecosystems during the end-Permian biotic crisis
A newly studied Permian-Triassic (P-Tr) boundary section in Jameson Land, East Greenland, contains an abundant and well-preserved marine fauna as well as terrestrial palynomorphs. For the first time…
Volcanism, Mass Extinction, and Carbon Isotope Fluctuations in the Middle Permian of China
TLDR
Fossiliferous rocks from southwest China show that a major extinction in the Middle Permian coincided with extensive volcanic eruptions, and the onset of volcanism was marked by both large phreatomagmatic eruptions and extinctions amongst fusulinacean foraminifers and calcareous algae.
Triassic climates — State of the art and perspectives
Abstract The climate of the Triassic period was characterized by a non-zonal pattern, dictated by a strong global monsoon system with effects that are most evident in the Tethys realm. This strong…
Large shifts in the isotopic composition of seawater sulphate across the Permo–Triassic boundary in northern Italy
Carbonate-associated sulphate (CAS) extracted from a Permo–Triassic succession at Siusi in northern Italy is shown to preserve a true seawater-sulphate isotope record. Two periods of increasing δ34S…
Anoxia as a cause of the Permian/Triassic mass extinction : facies evidence from northern Italy and the western United States
Facies, faunal and geochemical evidence from the Permian/Triassic boundary sediments of the Dolomites and Idaho indicates a major anoxic event in the earliest Triassic. In both regions, the basal…
Extent, duration, and nature of the Permian-Triassic superanoxic event
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