KFU. Card publication. Five million years of high atmospheric CO2 in the aftermath of the Permian-Triassic mass extinction

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FEDERAL UNIVERSITY

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FIVE MILLION YEARS OF HIGH ATMOSPHERIC CO2 IN THE AFTERMATH OF THE PERMIAN-TRIASSIC MASS EXTINCTION

Form of presentation

Articles in international journals and collections

Year of publication

2022

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Authors, employees of KFU

Muravev Fedor Aleksandrovich, author

Silantev Vladimir Vladimirovich, author

Other authors

Joachimski Michael , author

Bibliographic description in the original language

Michael M. Joachimski, Johann Müller, Timothy M. Gallagher, Gregor Mathes, Daoliang L. Chu, Fedor Mouraviev, Vladimir Silantiev, Yadong D. Sun and Jinnan N. Tong, 2022. Five million years of high atmospheric CO2 in the aftermath of the Permian-Triassic mass extinction // Geology, Vol. 50, Is. 6, PP. 650-654

Annotation

The end-Permian mass extinction, the largest biological crisis in Earth history, is currently understood in the context of Siberian Traps volcanism introducing large quantities of greenhouse gases to the atmosphere, culminating in the Early Triassic hothouse. In our study, the late Permian and Early Triassic atmospheric CO2 history was reconstructed by applying the paleosol pCO2 barometer. Atmospheric pCO2 shows an approximate 4× increase from mean concentrations of 412–919 ppmv in the late Permian (Changhsingian) to maximum levels between 2181 and 2610 ppmv in the Early Triassic (late Griesbachian). Mean CO2 estimates for the later Early Triassic are between 1261–1936 ppmv (Dienerian) and 1063–1757 ppmv (Spathian). Significantly lower concentrations ranging from 343 to 634 ppmv are reconstructed for the latest Early to Middle Triassic (Anisian). The 5 m.y. episode of elevated pCO2 suggests that negative feedback mechanisms such as silicate weathering were not effective enough to reduce atmospheric pCO2 to precrisis levels and that marine authigenic clay formation (i.e., reverse weathering) may have been an important component of the global carbon cycle keeping atmospheric pCO2 at elevated levels.

Keywords

Atmospheric CO2, Permian, Triassic, paleosol, greenhouse

The name of the journal

GEOLOGY

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=265478&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Muravev Fedor Aleksandrovich	ru_RU
dc.contributor.author	Silantev Vladimir Vladimirovich	ru_RU
dc.contributor.author	Joachimski Michael	ru_RU
dc.date.accessioned	2022-01-01T00:00:00Z	ru_RU
dc.date.available	2022-01-01T00:00:00Z	ru_RU
dc.date.issued	2022	ru_RU
dc.identifier.citation	Michael M. Joachimski, Johann Müller, Timothy M. Gallagher, Gregor Mathes, Daoliang L. Chu, Fedor Mouraviev, Vladimir Silantiev, Yadong D. Sun and Jinnan N. Tong, 2022. Five million years of high atmospheric CO2 in the aftermath of the Permian-Triassic mass extinction // Geology, Vol. 50, Is. 6, PP. 650-654	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=265478&p_lang=2	ru_RU
dc.description.abstract	GEOLOGY	ru_RU
dc.description.abstract	The end-Permian mass extinction, the largest biological crisis in Earth history, is currently understood in the context of Siberian Traps volcanism introducing large quantities of greenhouse gases to the atmosphere, culminating in the Early Triassic hothouse. In our study, the late Permian and Early Triassic atmospheric CO2 history was reconstructed by applying the paleosol pCO2 barometer. Atmospheric pCO2 shows an approximate 4× increase from mean concentrations of 412–919 ppmv in the late Permian (Changhsingian) to maximum levels between 2181 and 2610 ppmv in the Early Triassic (late Griesbachian). Mean CO2 estimates for the later Early Triassic are between 1261–1936 ppmv (Dienerian) and 1063–1757 ppmv (Spathian). Significantly lower concentrations ranging from 343 to 634 ppmv are reconstructed for the latest Early to Middle Triassic (Anisian). The 5 m.y. episode of elevated pCO2 suggests that negative feedback mechanisms such as silicate weathering were not effective enough to reduce atmospheric pCO2 to precrisis levels and that marine authigenic clay formation (i.e., reverse weathering) may have been an important component of the global carbon cycle keeping atmospheric pCO2 at elevated levels.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Atmospheric CO2	ru_RU
dc.subject	Permian	ru_RU
dc.subject	Triassic	ru_RU
dc.subject	paleosol	ru_RU
dc.subject	greenhouse	ru_RU
dc.title	Five million years of high atmospheric CO2 in the aftermath of the Permian-Triassic mass extinction	ru_RU
dc.type	Articles in international journals and collections	ru_RU