Indian margin methane hydrate dissociation recorded in the carbon isotopes of benthic (Miliolida) foraminifera
Methane hydrates in ocean sediments have been investigated across various timescales using a broad array of indicators to better understand hydrate dynamics and climate linkages. Here we report individual benthic and planktonic foraminiferal isotopic analyses at three sites from distinct oceanic env...
Published in: | Earth and Planetary Science Letters |
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ftarchimer:oai:archimer.ifremer.fr:93973 2023-12-24T10:18:32+01:00 Indian margin methane hydrate dissociation recorded in the carbon isotopes of benthic (Miliolida) foraminifera Clemens, S.c. Thirumalai, K. Oppo, D. 2023-05 application/pdf https://archimer.ifremer.fr/doc/00828/93973/100793.pdf https://archimer.ifremer.fr/doc/00828/93973/100794.xlsx https://doi.org/10.1016/j.epsl.2023.118101 https://archimer.ifremer.fr/doc/00828/93973/ eng eng Elsevier BV https://archimer.ifremer.fr/doc/00828/93973/100793.pdf https://archimer.ifremer.fr/doc/00828/93973/100794.xlsx doi:10.1016/j.epsl.2023.118101 https://archimer.ifremer.fr/doc/00828/93973/ info:eu-repo/semantics/openAccess restricted use Earth And Planetary Science Letters (0012-821X) (Elsevier BV), 2023-05 , Vol. 609 , P. 118101 (11p.) methane hydrate Miliolida foraminifera Pyrgo Spiroloculina Quinqueloculina IODP Site U1446 Mahanadi basin Bay of Bengal text Article info:eu-repo/semantics/article 2023 ftarchimer https://doi.org/10.1016/j.epsl.2023.118101 2023-11-28T23:51:10Z Methane hydrates in ocean sediments have been investigated across various timescales using a broad array of indicators to better understand hydrate dynamics and climate linkages. Here we report individual benthic and planktonic foraminiferal isotopic analyses at three sites from distinct oceanic environments in the northern Indian Ocean. The multi-species, multi-site analyses identify a unique C response in Miliolida benthic foraminifera Pyrgo spp., Quinqueloculina spp., and Spiroloculina spp. suggesting that some species within these genera record the location and timing of past methane hydrate dissociation in the stable carbon isotopic composition of their skeletal (test) material. Our results document that dissociation occurred in the Mahanadi offshore basin, northwest Bay of Bengal, during glacial, transitional, and interglacial intervals of the past 1.5 million years. More negative test C coupled with more positive O supports the inference of interglacial-age dissociation, likely driven by increased intermediate water temperatures. Article in Journal/Newspaper Methane hydrate Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Indian Northwest Bay ENVELOPE(-55.531,-55.531,51.500,51.500) Earth and Planetary Science Letters 609 118101 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
methane hydrate Miliolida foraminifera Pyrgo Spiroloculina Quinqueloculina IODP Site U1446 Mahanadi basin Bay of Bengal |
spellingShingle |
methane hydrate Miliolida foraminifera Pyrgo Spiroloculina Quinqueloculina IODP Site U1446 Mahanadi basin Bay of Bengal Clemens, S.c. Thirumalai, K. Oppo, D. Indian margin methane hydrate dissociation recorded in the carbon isotopes of benthic (Miliolida) foraminifera |
topic_facet |
methane hydrate Miliolida foraminifera Pyrgo Spiroloculina Quinqueloculina IODP Site U1446 Mahanadi basin Bay of Bengal |
description |
Methane hydrates in ocean sediments have been investigated across various timescales using a broad array of indicators to better understand hydrate dynamics and climate linkages. Here we report individual benthic and planktonic foraminiferal isotopic analyses at three sites from distinct oceanic environments in the northern Indian Ocean. The multi-species, multi-site analyses identify a unique C response in Miliolida benthic foraminifera Pyrgo spp., Quinqueloculina spp., and Spiroloculina spp. suggesting that some species within these genera record the location and timing of past methane hydrate dissociation in the stable carbon isotopic composition of their skeletal (test) material. Our results document that dissociation occurred in the Mahanadi offshore basin, northwest Bay of Bengal, during glacial, transitional, and interglacial intervals of the past 1.5 million years. More negative test C coupled with more positive O supports the inference of interglacial-age dissociation, likely driven by increased intermediate water temperatures. |
format |
Article in Journal/Newspaper |
author |
Clemens, S.c. Thirumalai, K. Oppo, D. |
author_facet |
Clemens, S.c. Thirumalai, K. Oppo, D. |
author_sort |
Clemens, S.c. |
title |
Indian margin methane hydrate dissociation recorded in the carbon isotopes of benthic (Miliolida) foraminifera |
title_short |
Indian margin methane hydrate dissociation recorded in the carbon isotopes of benthic (Miliolida) foraminifera |
title_full |
Indian margin methane hydrate dissociation recorded in the carbon isotopes of benthic (Miliolida) foraminifera |
title_fullStr |
Indian margin methane hydrate dissociation recorded in the carbon isotopes of benthic (Miliolida) foraminifera |
title_full_unstemmed |
Indian margin methane hydrate dissociation recorded in the carbon isotopes of benthic (Miliolida) foraminifera |
title_sort |
indian margin methane hydrate dissociation recorded in the carbon isotopes of benthic (miliolida) foraminifera |
publisher |
Elsevier BV |
publishDate |
2023 |
url |
https://archimer.ifremer.fr/doc/00828/93973/100793.pdf https://archimer.ifremer.fr/doc/00828/93973/100794.xlsx https://doi.org/10.1016/j.epsl.2023.118101 https://archimer.ifremer.fr/doc/00828/93973/ |
long_lat |
ENVELOPE(-55.531,-55.531,51.500,51.500) |
geographic |
Indian Northwest Bay |
geographic_facet |
Indian Northwest Bay |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
Earth And Planetary Science Letters (0012-821X) (Elsevier BV), 2023-05 , Vol. 609 , P. 118101 (11p.) |
op_relation |
https://archimer.ifremer.fr/doc/00828/93973/100793.pdf https://archimer.ifremer.fr/doc/00828/93973/100794.xlsx doi:10.1016/j.epsl.2023.118101 https://archimer.ifremer.fr/doc/00828/93973/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.epsl.2023.118101 |
container_title |
Earth and Planetary Science Letters |
container_volume |
609 |
container_start_page |
118101 |
_version_ |
1786207574411968512 |