Simulation of Carbon Isotope Excursion Events at the Permian-Triassic Boundary Based on GEOCARB
Abstract: The biggest Phanerozoic mass extinctionoccurred at the Permian-Triassic boundary and resulted in the loss of about 95% or more of all marine species. For quite some time, many kinds of abnormal environmental events were adopted to explain the abnormal reduction of carbon isotope at the Permian-Triassic boundary, however there still has not been a unified opinion. In this paper, based on the carbon cycle balance model of the earth under a long-period scale, the contributions of possible cataclysm events at the Permian-Triassic boundary to the carbon isotope records in carbonates were quantitatively simulated. The results proved that a single event, such as volcanism, terrestrial ecosystem collapse or another factor, was not strong enough to lead to the negative bias of carbon isotope at the Permian-Triassic boundary. Even though the release of methane hydrate can result in a comparably large negative excursion of inorganic carbon, this explanation becomes unsuitable when both the shifting Permian-Triassic boundary and the fluctuation record of other inorganic carbon isotopes in the early Triassic as a whole are considered. Therefore, it is suggested that the dynamic equilibrium between inorganic carbon reserves and organic carbon reserves was possibly disturbed by a superimposed effect of multiple events.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Simulation of Carbon Isotope Excursion Events at the Permian-Triassic Boundary Based on GEOCARB ; volume:10 ; number:1 ; year:2018 ; pages:441-451 ; extent:11
Open Geosciences ; 10, Heft 1 (2018), 441-451 (gesamt 11)
- Urheber
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Zhong, Y. J.
Huang, K. K.
Lan, Y. F.
Chen, A. Q.
- DOI
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10.1515/geo-2018-0034
- URN
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urn:nbn:de:101:1-2501051448077.634673667749
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:32 MESZ
Datenpartner
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Beteiligte
- Zhong, Y. J.
- Huang, K. K.
- Lan, Y. F.
- Chen, A. Q.
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