Flood Basalts and Mass Extinctions
Flood basalts were Earth's largest volcanic episodes that, along with related intrusions, were often emplaced rapidly and coincided with environmental disruption: oceanic anoxic events, hyperthermals, and mass extinction events. Volatile emissions, both from magmatic degassing and vaporized fro...
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ftcdlib:oai:escholarship.org:ark:/13030/qt3q4714cg 2023-06-11T04:15:37+02:00 Flood Basalts and Mass Extinctions Clapham, Matthew E Renne, Paul R 2019-05-30 application/pdf https://escholarship.org/uc/item/3q4714cg unknown eScholarship, University of California qt3q4714cg https://escholarship.org/uc/item/3q4714cg public Climate Action Life Below Water climate change ocean acidification anoxia extinction selectivity physiology Physical Sciences Earth Sciences Geochemistry & Geophysics monograph 2019 ftcdlib 2023-05-29T17:59:47Z Flood basalts were Earth's largest volcanic episodes that, along with related intrusions, were often emplaced rapidly and coincided with environmental disruption: oceanic anoxic events, hyperthermals, and mass extinction events. Volatile emissions, both from magmatic degassing and vaporized from surrounding rock, triggered short-term cooling and longer-term warming, ocean acidification, and deoxygenation. The magnitude of biological extinction varied considerably, from small events affecting only select groups to the largest extinction of the Phanerozoic, with less-active organisms and those with less-developed respiratory physiology faring especially poorly. The disparate environmental and biological outcomes of different flood basalt events may at first order be explained by variations in the rate of volatile release modulated by longer trends in ocean carbon cycle buffering and the composition of marine ecosystems. Assessing volatile release, environmental change, and biological extinction at finer temporal resolution should be a top priority to refine ancient hyperthermals as analogs for anthropogenic climate change. ▪ Flood basalts, the largest volcanic events in Earth history, triggered dramatic environmental changes on land and in the oceans. ▪ Rapid volcanic carbon emissions led to ocean warming, acidification, and deoxygenation that often caused widespread animal extinctions. ▪ Animal physiology played a key role in survival during flood basalt extinctions, with reef builders such as corals being especially vulnerable. ▪ The rate and duration of volcanic carbon emission controlled the type of environmental disruption and the severity of biological extinction. Book Ocean acidification University of California: eScholarship |
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University of California: eScholarship |
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unknown |
topic |
Climate Action Life Below Water climate change ocean acidification anoxia extinction selectivity physiology Physical Sciences Earth Sciences Geochemistry & Geophysics |
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Climate Action Life Below Water climate change ocean acidification anoxia extinction selectivity physiology Physical Sciences Earth Sciences Geochemistry & Geophysics Clapham, Matthew E Renne, Paul R Flood Basalts and Mass Extinctions |
topic_facet |
Climate Action Life Below Water climate change ocean acidification anoxia extinction selectivity physiology Physical Sciences Earth Sciences Geochemistry & Geophysics |
description |
Flood basalts were Earth's largest volcanic episodes that, along with related intrusions, were often emplaced rapidly and coincided with environmental disruption: oceanic anoxic events, hyperthermals, and mass extinction events. Volatile emissions, both from magmatic degassing and vaporized from surrounding rock, triggered short-term cooling and longer-term warming, ocean acidification, and deoxygenation. The magnitude of biological extinction varied considerably, from small events affecting only select groups to the largest extinction of the Phanerozoic, with less-active organisms and those with less-developed respiratory physiology faring especially poorly. The disparate environmental and biological outcomes of different flood basalt events may at first order be explained by variations in the rate of volatile release modulated by longer trends in ocean carbon cycle buffering and the composition of marine ecosystems. Assessing volatile release, environmental change, and biological extinction at finer temporal resolution should be a top priority to refine ancient hyperthermals as analogs for anthropogenic climate change. ▪ Flood basalts, the largest volcanic events in Earth history, triggered dramatic environmental changes on land and in the oceans. ▪ Rapid volcanic carbon emissions led to ocean warming, acidification, and deoxygenation that often caused widespread animal extinctions. ▪ Animal physiology played a key role in survival during flood basalt extinctions, with reef builders such as corals being especially vulnerable. ▪ The rate and duration of volcanic carbon emission controlled the type of environmental disruption and the severity of biological extinction. |
format |
Book |
author |
Clapham, Matthew E Renne, Paul R |
author_facet |
Clapham, Matthew E Renne, Paul R |
author_sort |
Clapham, Matthew E |
title |
Flood Basalts and Mass Extinctions |
title_short |
Flood Basalts and Mass Extinctions |
title_full |
Flood Basalts and Mass Extinctions |
title_fullStr |
Flood Basalts and Mass Extinctions |
title_full_unstemmed |
Flood Basalts and Mass Extinctions |
title_sort |
flood basalts and mass extinctions |
publisher |
eScholarship, University of California |
publishDate |
2019 |
url |
https://escholarship.org/uc/item/3q4714cg |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
qt3q4714cg https://escholarship.org/uc/item/3q4714cg |
op_rights |
public |
_version_ |
1768372562302074880 |