Thermogenic methane release as a cause for the long duration of the PETM.
The Paleocene-Eocene Thermal Maximum (PETM) (∼56 Ma) was a ∼170,000-y (∼170-kyr) period of global warming associated with rapid and massive injections of 13C-depleted carbon into the ocean-atmosphere system, reflected in sedimentary components as a negative carbon isotope excursion (CIE). Carbon cyc...
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ftpubmed:27790990 2024-06-23T07:55:15+00:00 Thermogenic methane release as a cause for the long duration of the PETM. Frieling, Joost Svensen, Henrik H Planke, Sverre Cramwinckel, Marlow J Selnes, Haavard Sluijs, Appy 2016-10-25 https://doi.org/10.1073/pnas.1603348113 https://pubmed.ncbi.nlm.nih.gov/27790990 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5087067/ eng eng Atypon https://doi.org/10.1073/pnas.1603348113 https://pubmed.ncbi.nlm.nih.gov/27790990 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5087067/ Proc Natl Acad Sci U S A ISSN:1091-6490 Volume:113 Issue:43 PETM carbon cycle climate change thermogenic methane volcanism Journal Article Research Support, Non-U.S. Gov't 2016 ftpubmed https://doi.org/10.1073/pnas.1603348113 2024-06-13T16:02:00Z The Paleocene-Eocene Thermal Maximum (PETM) (∼56 Ma) was a ∼170,000-y (∼170-kyr) period of global warming associated with rapid and massive injections of 13C-depleted carbon into the ocean-atmosphere system, reflected in sedimentary components as a negative carbon isotope excursion (CIE). Carbon cycle modeling has indicated that the shape and magnitude of this CIE are generally explained by a large and rapid initial pulse, followed by ∼50 kyr of 13C-depleted carbon injection. Suggested sources include submarine methane hydrates, terrigenous organic matter, and thermogenic methane and CO2 from hydrothermal vent complexes. Here, we test for the contribution of carbon release associated with volcanic intrusions in the North Atlantic Igneous Province. We use dinoflagellate cyst and stable carbon isotope stratigraphy to date the active phase of a hydrothermal vent system and find it to postdate massive carbon release at the onset of the PETM. Crucially, however, it correlates to the period within the PETM of longer-term 13C-depleted carbon release. This finding represents actual proof of PETM carbon release from a particular reservoir. Based on carbon cycle box model [i.e., Long-Term Ocean-Atmosphere-Sediment Carbon Cycle Reservoir (LOSCAR) model] experiments, we show that 4-12 pulses of carbon input from vent systems over 60 kyr with a total mass of 1,500 Pg of C, consistent with the vent literature, match the shape of the CIE and pattern of deep ocean carbonate dissolution as recorded in sediment records. We therefore conclude that CH4 from the Norwegian Sea vent complexes was likely the main source of carbon during the PETM, following its dramatic onset. Article in Journal/Newspaper North Atlantic Norwegian Sea PubMed Central (PMC) Norwegian Sea Proceedings of the National Academy of Sciences 113 43 12059 12064 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
PETM carbon cycle climate change thermogenic methane volcanism |
spellingShingle |
PETM carbon cycle climate change thermogenic methane volcanism Frieling, Joost Svensen, Henrik H Planke, Sverre Cramwinckel, Marlow J Selnes, Haavard Sluijs, Appy Thermogenic methane release as a cause for the long duration of the PETM. |
topic_facet |
PETM carbon cycle climate change thermogenic methane volcanism |
description |
The Paleocene-Eocene Thermal Maximum (PETM) (∼56 Ma) was a ∼170,000-y (∼170-kyr) period of global warming associated with rapid and massive injections of 13C-depleted carbon into the ocean-atmosphere system, reflected in sedimentary components as a negative carbon isotope excursion (CIE). Carbon cycle modeling has indicated that the shape and magnitude of this CIE are generally explained by a large and rapid initial pulse, followed by ∼50 kyr of 13C-depleted carbon injection. Suggested sources include submarine methane hydrates, terrigenous organic matter, and thermogenic methane and CO2 from hydrothermal vent complexes. Here, we test for the contribution of carbon release associated with volcanic intrusions in the North Atlantic Igneous Province. We use dinoflagellate cyst and stable carbon isotope stratigraphy to date the active phase of a hydrothermal vent system and find it to postdate massive carbon release at the onset of the PETM. Crucially, however, it correlates to the period within the PETM of longer-term 13C-depleted carbon release. This finding represents actual proof of PETM carbon release from a particular reservoir. Based on carbon cycle box model [i.e., Long-Term Ocean-Atmosphere-Sediment Carbon Cycle Reservoir (LOSCAR) model] experiments, we show that 4-12 pulses of carbon input from vent systems over 60 kyr with a total mass of 1,500 Pg of C, consistent with the vent literature, match the shape of the CIE and pattern of deep ocean carbonate dissolution as recorded in sediment records. We therefore conclude that CH4 from the Norwegian Sea vent complexes was likely the main source of carbon during the PETM, following its dramatic onset. |
format |
Article in Journal/Newspaper |
author |
Frieling, Joost Svensen, Henrik H Planke, Sverre Cramwinckel, Marlow J Selnes, Haavard Sluijs, Appy |
author_facet |
Frieling, Joost Svensen, Henrik H Planke, Sverre Cramwinckel, Marlow J Selnes, Haavard Sluijs, Appy |
author_sort |
Frieling, Joost |
title |
Thermogenic methane release as a cause for the long duration of the PETM. |
title_short |
Thermogenic methane release as a cause for the long duration of the PETM. |
title_full |
Thermogenic methane release as a cause for the long duration of the PETM. |
title_fullStr |
Thermogenic methane release as a cause for the long duration of the PETM. |
title_full_unstemmed |
Thermogenic methane release as a cause for the long duration of the PETM. |
title_sort |
thermogenic methane release as a cause for the long duration of the petm. |
publisher |
Atypon |
publishDate |
2016 |
url |
https://doi.org/10.1073/pnas.1603348113 https://pubmed.ncbi.nlm.nih.gov/27790990 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5087067/ |
geographic |
Norwegian Sea |
geographic_facet |
Norwegian Sea |
genre |
North Atlantic Norwegian Sea |
genre_facet |
North Atlantic Norwegian Sea |
op_source |
Proc Natl Acad Sci U S A ISSN:1091-6490 Volume:113 Issue:43 |
op_relation |
https://doi.org/10.1073/pnas.1603348113 https://pubmed.ncbi.nlm.nih.gov/27790990 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5087067/ |
op_doi |
https://doi.org/10.1073/pnas.1603348113 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
113 |
container_issue |
43 |
container_start_page |
12059 |
op_container_end_page |
12064 |
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1802647761792794624 |