Massive methane fluxing from magma–sediment interaction in the end-Triassic Central Atlantic Magmatic Province

Manfredo Capriolo; Andrea Marzoli; László E. Aradi; Michael R. Ackerson; Omar Bartoli; Sara Callegaro; Jacopo Dal Corso; Marcia Ernesto; Eleonora M. Gouvêa Vasconcellos; Angelo De Min; Robert J. Newton; Csaba Szabó

doi:10.1038/s41467-021-25510-w

Massive methane fluxing from magma–sediment interaction in the end-Triassic Central Atlantic Magmatic Province

Manfredo Capriolo^*, Andrea Marzoli^*, László E. Aradi, Michael R. Ackerson, Omar Bartoli, Sara Callegaro, Jacopo Dal Corso, Marcia Ernesto, Eleonora M. Gouvêa Vasconcellos, Angelo De Min, Robert J. Newton, Csaba Szabó

^*Corresponding author for this work

Earth and Environmental Sciences

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Abstract

Exceptional magmatic events coincided with the largest mass extinctions throughout Earth’s history. Extensive degassing from organic-rich sediments intruded by magmas is a possible driver of the catastrophic environmental changes, which triggered the biotic crises. One of Earth’s largest magmatic events is represented by the Central Atlantic Magmatic Province, which was synchronous with the end-Triassic mass extinction. Here, we show direct evidence for the presence in basaltic magmas of methane, generated or remobilized from the host sedimentary sequence during the emplacement of this Large Igneous Province. Abundant methane-rich fluid inclusions were entrapped within quartz at the end of magmatic crystallization in voluminous (about 1.0 × 10⁶km³) intrusions in Brazilian Amazonia, indicating a massive (about 7.2 × 10³ Gt) fluxing of methane. These micrometre-sized imperfections in quartz crystals attest an extensive release of methane from magma–sediment interaction, which likely contributed to the global climate changes responsible for the end-Triassic mass extinction.

Original language	English
Article number	5534
Number of pages	9
Journal	Nature Communications
Volume	12
DOIs	https://doi.org/10.1038/s41467-021-25510-w
Publication status	Published - 20 Sept 2021

Bibliographical note

Acknowledgments:
This study was supported by the following collaborative research projects: PRIN 20178LPCP (Italy) to A.M. and A.D.M., TKP2020-IKA-05 (Hungarian Ministry of Human Capacities) to L.E.A. and Cs.Sz., BART_SID19_01 (Italy) to O.B., Young Research Talents Project 301096 MAPLES (Research Council of Norway) to S.C., and NERC Large Grant NE/N018559/1 (UK) to R.J.N. The authors thank A. Sansone (University of Padova) for sample selection, L. Tauro (University of Padova) for sample preparation, and G. Bellieni for valuable assistance during sampling.

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Capriolo, M., Marzoli, A., Aradi, L. E., Ackerson, M. R., Bartoli, O., Callegaro, S., Corso, J. D., Ernesto, M., Vasconcellos, E. M. G., De Min, A., Newton, R. J., & Szabó, C. (2021). Massive methane fluxing from magma–sediment interaction in the end-Triassic Central Atlantic Magmatic Province. Nature Communications, 12, Article 5534. https://doi.org/10.1038/s41467-021-25510-w

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title = "Massive methane fluxing from magma–sediment interaction in the end-Triassic Central Atlantic Magmatic Province",

abstract = "Exceptional magmatic events coincided with the largest mass extinctions throughout Earth{\textquoteright}s history. Extensive degassing from organic-rich sediments intruded by magmas is a possible driver of the catastrophic environmental changes, which triggered the biotic crises. One of Earth{\textquoteright}s largest magmatic events is represented by the Central Atlantic Magmatic Province, which was synchronous with the end-Triassic mass extinction. Here, we show direct evidence for the presence in basaltic magmas of methane, generated or remobilized from the host sedimentary sequence during the emplacement of this Large Igneous Province. Abundant methane-rich fluid inclusions were entrapped within quartz at the end of magmatic crystallization in voluminous (about 1.0 × 106 km3) intrusions in Brazilian Amazonia, indicating a massive (about 7.2 × 103 Gt) fluxing of methane. These micrometre-sized imperfections in quartz crystals attest an extensive release of methane from magma–sediment interaction, which likely contributed to the global climate changes responsible for the end-Triassic mass extinction.",

author = "Manfredo Capriolo and Andrea Marzoli and Aradi, {L{\'a}szl{\'o} E.} and Ackerson, {Michael R.} and Omar Bartoli and Sara Callegaro and Corso, {Jacopo Dal} and Marcia Ernesto and Vasconcellos, {Eleonora M. Gouv{\^e}a} and {De Min}, Angelo and Newton, {Robert J.} and Csaba Szab{\'o}",

note = "Acknowledgments: This study was supported by the following collaborative research projects: PRIN 20178LPCP (Italy) to A.M. and A.D.M., TKP2020-IKA-05 (Hungarian Ministry of Human Capacities) to L.E.A. and Cs.Sz., BART_SID19_01 (Italy) to O.B., Young Research Talents Project 301096 MAPLES (Research Council of Norway) to S.C., and NERC Large Grant NE/N018559/1 (UK) to R.J.N. The authors thank A. Sansone (University of Padova) for sample selection, L. Tauro (University of Padova) for sample preparation, and G. Bellieni for valuable assistance during sampling.",

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AU - Marzoli, Andrea

AU - Aradi, László E.

AU - Ackerson, Michael R.

AU - Bartoli, Omar

AU - Callegaro, Sara

AU - Corso, Jacopo Dal

AU - Ernesto, Marcia

AU - Vasconcellos, Eleonora M. Gouvêa

AU - De Min, Angelo

AU - Newton, Robert J.

AU - Szabó, Csaba

N1 - Acknowledgments: This study was supported by the following collaborative research projects: PRIN 20178LPCP (Italy) to A.M. and A.D.M., TKP2020-IKA-05 (Hungarian Ministry of Human Capacities) to L.E.A. and Cs.Sz., BART_SID19_01 (Italy) to O.B., Young Research Talents Project 301096 MAPLES (Research Council of Norway) to S.C., and NERC Large Grant NE/N018559/1 (UK) to R.J.N. The authors thank A. Sansone (University of Padova) for sample selection, L. Tauro (University of Padova) for sample preparation, and G. Bellieni for valuable assistance during sampling.

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N2 - Exceptional magmatic events coincided with the largest mass extinctions throughout Earth’s history. Extensive degassing from organic-rich sediments intruded by magmas is a possible driver of the catastrophic environmental changes, which triggered the biotic crises. One of Earth’s largest magmatic events is represented by the Central Atlantic Magmatic Province, which was synchronous with the end-Triassic mass extinction. Here, we show direct evidence for the presence in basaltic magmas of methane, generated or remobilized from the host sedimentary sequence during the emplacement of this Large Igneous Province. Abundant methane-rich fluid inclusions were entrapped within quartz at the end of magmatic crystallization in voluminous (about 1.0 × 106 km3) intrusions in Brazilian Amazonia, indicating a massive (about 7.2 × 103 Gt) fluxing of methane. These micrometre-sized imperfections in quartz crystals attest an extensive release of methane from magma–sediment interaction, which likely contributed to the global climate changes responsible for the end-Triassic mass extinction.

AB - Exceptional magmatic events coincided with the largest mass extinctions throughout Earth’s history. Extensive degassing from organic-rich sediments intruded by magmas is a possible driver of the catastrophic environmental changes, which triggered the biotic crises. One of Earth’s largest magmatic events is represented by the Central Atlantic Magmatic Province, which was synchronous with the end-Triassic mass extinction. Here, we show direct evidence for the presence in basaltic magmas of methane, generated or remobilized from the host sedimentary sequence during the emplacement of this Large Igneous Province. Abundant methane-rich fluid inclusions were entrapped within quartz at the end of magmatic crystallization in voluminous (about 1.0 × 106 km3) intrusions in Brazilian Amazonia, indicating a massive (about 7.2 × 103 Gt) fluxing of methane. These micrometre-sized imperfections in quartz crystals attest an extensive release of methane from magma–sediment interaction, which likely contributed to the global climate changes responsible for the end-Triassic mass extinction.

U2 - 10.1038/s41467-021-25510-w

DO - 10.1038/s41467-021-25510-w

M3 - Article

SN - 2041-1723

VL - 12

JO - Nature Communications

JF - Nature Communications

M1 - 5534

ER -

Massive methane fluxing from magma–sediment interaction in the end-Triassic Central Atlantic Magmatic Province

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