(Table DR1) Abundance of benthonic foraminifera in sediments from ODP Hole 113-690
A mass extinction of deep-sea benthic foraminifera has been documented globally, coeval with the negative carbon isotope excursion (CIE) at the Paleocene-Eocene boundary, which was probably caused by dissociation of methane hydrate. A detailed record of benthic foraminiferal faunal change over ~30 k...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.724678 2024-09-15T18:18:43+00:00 (Table DR1) Abundance of benthonic foraminifera in sediments from ODP Hole 113-690 Thomas, Ellen LATITUDE: -65.160667 * LONGITUDE: 1.204867 * DATE/TIME START: 1987-01-19T00:00:00 * DATE/TIME END: 1987-01-23T00:00:00 * MINIMUM DEPTH, sediment/rock: 170.415 m * MAXIMUM DEPTH, sediment/rock: 170.745 m 2003 text/tab-separated-values, 2040 data points https://doi.pangaea.de/10.1594/PANGAEA.724678 https://doi.org/10.1594/PANGAEA.724678 en eng PANGAEA Table DR1 - Abundances of benthic foraminifera [dataset]. ftp://rock.geosociety.org/pub/reposit/2003/2003051.pdf https://doi.pangaea.de/10.1594/PANGAEA.724678 https://doi.org/10.1594/PANGAEA.724678 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Thomas, Ellen (2003): Extinction and food at the seafloor: A high-resolution benthic foraminiferal record across the initial Eocene thermal maximum, Southern Ocean site 690. GSA Special Paper: Causes and consequences of globally warm climates in the Early Paleogene, 319-332, https://doi.org/10.1130/0-8137-2369-8.319 113-690 Abyssamina poagi Abyssamina quadrata AGE Alabamina creta Anomalinoides cf. acutus Anomalinoides rubiginosus Anomalinoides spissiformis Aragonia aragonensis Aragonia sp. Astacolus spp. Bolivinita sp. Bolivinoides cf. decoratus Bolivinoides decoratus Bolivinoides delicatulus Bulimina kugleri Bulimina midwayensis Bulimina simplex Bulimina thanetensis Bulimina trinitatensis Buliminella beaumonti Calculated Cibicides variabilis Clinapertina subplanispira COMPCORE Composite Core Coryphostoma sp. Counting Cyclammina sp. DEPTH sediment/rock Dorothia oxycona DSDP/ODP/IODP sample designation Eilohedra weddellensis Fishers alpha index of diversity Foraminifera benthic uniserial uniserial lagenids Fursenkoina pauciloculata Fursenkoina tegulata Gaudryina pyramidata Globobulimina sp. Gravellina narivaensis Gyroidinoides acutus Gyroidinoides beisseli dataset 2003 ftpangaea https://doi.org/10.1594/PANGAEA.72467810.1130/0-8137-2369-8.319 2024-07-24T02:31:30Z A mass extinction of deep-sea benthic foraminifera has been documented globally, coeval with the negative carbon isotope excursion (CIE) at the Paleocene-Eocene boundary, which was probably caused by dissociation of methane hydrate. A detailed record of benthic foraminiferal faunal change over ~30 k.y. across the carbon isotopic excursion at the Ocean Drilling Program Site 690 (Southern Ocean) shows that shortly before the CIE absolute benthic foraminiferal abundance at that site started to increase. 'Doomed species' began to decrease in abundance at the CIE by a few thousand years. After the extinction faunas were dominated by small species, which resemble opportunistic taxa under high-productivity regions in the present oceans. Calcareous nannofossils (primary producers), however, show a transition to more oligotrophic nannofloras exactly where the benthic faunas show the opposite. Plankton and benthos is thus decoupled. Possibly, a larger fraction of food particles reached the seafloor after the CIE, so that food for benthos increased although productivity declined. Enhanced organic preservation might have resulted from low-oxygen conditions caused by oxidation of methane. Alternatively, and speculatively, there was a food-source at the ocean floor. Benthic foraminifera dominating the post-extinction fauna resemble living species that symbiotically use chemosynthetic bacteria at cold seeps. During increased, diffuse methane escape from hydrates, sulfate-reducing bacteria could have produced sulfide used by chemosynthetic bacteria, which in turn were used by the benthic foraminifera, causing extinction by a change in food supply. Dataset Methane hydrate Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(1.204867,1.204867,-65.160667,-65.160667) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
113-690 Abyssamina poagi Abyssamina quadrata AGE Alabamina creta Anomalinoides cf. acutus Anomalinoides rubiginosus Anomalinoides spissiformis Aragonia aragonensis Aragonia sp. Astacolus spp. Bolivinita sp. Bolivinoides cf. decoratus Bolivinoides decoratus Bolivinoides delicatulus Bulimina kugleri Bulimina midwayensis Bulimina simplex Bulimina thanetensis Bulimina trinitatensis Buliminella beaumonti Calculated Cibicides variabilis Clinapertina subplanispira COMPCORE Composite Core Coryphostoma sp. Counting Cyclammina sp. DEPTH sediment/rock Dorothia oxycona DSDP/ODP/IODP sample designation Eilohedra weddellensis Fishers alpha index of diversity Foraminifera benthic uniserial uniserial lagenids Fursenkoina pauciloculata Fursenkoina tegulata Gaudryina pyramidata Globobulimina sp. Gravellina narivaensis Gyroidinoides acutus Gyroidinoides beisseli |
spellingShingle |
113-690 Abyssamina poagi Abyssamina quadrata AGE Alabamina creta Anomalinoides cf. acutus Anomalinoides rubiginosus Anomalinoides spissiformis Aragonia aragonensis Aragonia sp. Astacolus spp. Bolivinita sp. Bolivinoides cf. decoratus Bolivinoides decoratus Bolivinoides delicatulus Bulimina kugleri Bulimina midwayensis Bulimina simplex Bulimina thanetensis Bulimina trinitatensis Buliminella beaumonti Calculated Cibicides variabilis Clinapertina subplanispira COMPCORE Composite Core Coryphostoma sp. Counting Cyclammina sp. DEPTH sediment/rock Dorothia oxycona DSDP/ODP/IODP sample designation Eilohedra weddellensis Fishers alpha index of diversity Foraminifera benthic uniserial uniserial lagenids Fursenkoina pauciloculata Fursenkoina tegulata Gaudryina pyramidata Globobulimina sp. Gravellina narivaensis Gyroidinoides acutus Gyroidinoides beisseli Thomas, Ellen (Table DR1) Abundance of benthonic foraminifera in sediments from ODP Hole 113-690 |
topic_facet |
113-690 Abyssamina poagi Abyssamina quadrata AGE Alabamina creta Anomalinoides cf. acutus Anomalinoides rubiginosus Anomalinoides spissiformis Aragonia aragonensis Aragonia sp. Astacolus spp. Bolivinita sp. Bolivinoides cf. decoratus Bolivinoides decoratus Bolivinoides delicatulus Bulimina kugleri Bulimina midwayensis Bulimina simplex Bulimina thanetensis Bulimina trinitatensis Buliminella beaumonti Calculated Cibicides variabilis Clinapertina subplanispira COMPCORE Composite Core Coryphostoma sp. Counting Cyclammina sp. DEPTH sediment/rock Dorothia oxycona DSDP/ODP/IODP sample designation Eilohedra weddellensis Fishers alpha index of diversity Foraminifera benthic uniserial uniserial lagenids Fursenkoina pauciloculata Fursenkoina tegulata Gaudryina pyramidata Globobulimina sp. Gravellina narivaensis Gyroidinoides acutus Gyroidinoides beisseli |
description |
A mass extinction of deep-sea benthic foraminifera has been documented globally, coeval with the negative carbon isotope excursion (CIE) at the Paleocene-Eocene boundary, which was probably caused by dissociation of methane hydrate. A detailed record of benthic foraminiferal faunal change over ~30 k.y. across the carbon isotopic excursion at the Ocean Drilling Program Site 690 (Southern Ocean) shows that shortly before the CIE absolute benthic foraminiferal abundance at that site started to increase. 'Doomed species' began to decrease in abundance at the CIE by a few thousand years. After the extinction faunas were dominated by small species, which resemble opportunistic taxa under high-productivity regions in the present oceans. Calcareous nannofossils (primary producers), however, show a transition to more oligotrophic nannofloras exactly where the benthic faunas show the opposite. Plankton and benthos is thus decoupled. Possibly, a larger fraction of food particles reached the seafloor after the CIE, so that food for benthos increased although productivity declined. Enhanced organic preservation might have resulted from low-oxygen conditions caused by oxidation of methane. Alternatively, and speculatively, there was a food-source at the ocean floor. Benthic foraminifera dominating the post-extinction fauna resemble living species that symbiotically use chemosynthetic bacteria at cold seeps. During increased, diffuse methane escape from hydrates, sulfate-reducing bacteria could have produced sulfide used by chemosynthetic bacteria, which in turn were used by the benthic foraminifera, causing extinction by a change in food supply. |
format |
Dataset |
author |
Thomas, Ellen |
author_facet |
Thomas, Ellen |
author_sort |
Thomas, Ellen |
title |
(Table DR1) Abundance of benthonic foraminifera in sediments from ODP Hole 113-690 |
title_short |
(Table DR1) Abundance of benthonic foraminifera in sediments from ODP Hole 113-690 |
title_full |
(Table DR1) Abundance of benthonic foraminifera in sediments from ODP Hole 113-690 |
title_fullStr |
(Table DR1) Abundance of benthonic foraminifera in sediments from ODP Hole 113-690 |
title_full_unstemmed |
(Table DR1) Abundance of benthonic foraminifera in sediments from ODP Hole 113-690 |
title_sort |
(table dr1) abundance of benthonic foraminifera in sediments from odp hole 113-690 |
publisher |
PANGAEA |
publishDate |
2003 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.724678 https://doi.org/10.1594/PANGAEA.724678 |
op_coverage |
LATITUDE: -65.160667 * LONGITUDE: 1.204867 * DATE/TIME START: 1987-01-19T00:00:00 * DATE/TIME END: 1987-01-23T00:00:00 * MINIMUM DEPTH, sediment/rock: 170.415 m * MAXIMUM DEPTH, sediment/rock: 170.745 m |
long_lat |
ENVELOPE(1.204867,1.204867,-65.160667,-65.160667) |
genre |
Methane hydrate Southern Ocean |
genre_facet |
Methane hydrate Southern Ocean |
op_source |
Supplement to: Thomas, Ellen (2003): Extinction and food at the seafloor: A high-resolution benthic foraminiferal record across the initial Eocene thermal maximum, Southern Ocean site 690. GSA Special Paper: Causes and consequences of globally warm climates in the Early Paleogene, 319-332, https://doi.org/10.1130/0-8137-2369-8.319 |
op_relation |
Table DR1 - Abundances of benthic foraminifera [dataset]. ftp://rock.geosociety.org/pub/reposit/2003/2003051.pdf https://doi.pangaea.de/10.1594/PANGAEA.724678 https://doi.org/10.1594/PANGAEA.724678 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.72467810.1130/0-8137-2369-8.319 |
_version_ |
1810456791637557248 |