Age determination of sediment cores from the northern Mid-Atlantic Ridge, supplement to: Manighetti, Barbara; McCave, I Nick; Maslin, Mark A; Shackleton, Nicholas J (1995): Chronology for climate change: Developing age models for the Biogeochemical Ocean Flux Study cores. Paleoceanography, 10(3), 513-526
We construct age models for a suite of cores from the northeast Atlantic Ocean by means of accelerator mass spectrometer dating of a key core, BOFS 5K, and correlation with the rest of the suite. The effects of bioturbation and foraminiferal species abundance gradients upon the age record are modele...
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ftdatacite:10.1594/pangaea.729929 2023-05-15T17:41:33+02:00 Age determination of sediment cores from the northern Mid-Atlantic Ridge, supplement to: Manighetti, Barbara; McCave, I Nick; Maslin, Mark A; Shackleton, Nicholas J (1995): Chronology for climate change: Developing age models for the Biogeochemical Ocean Flux Study cores. Paleoceanography, 10(3), 513-526 Manighetti, Barbara McCave, I Nick Maslin, Mark A Shackleton, Nicholas J 1995 application/zip https://dx.doi.org/10.1594/pangaea.729929 https://doi.pangaea.de/10.1594/PANGAEA.729929 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1029/94pa03062 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Kasten corer D184 Discovery 1962 Biogeochemical Ocean Flux Study BOFS Joint Global Ocean Flux Study JGOFS Collection article Supplementary Collection of Datasets 1995 ftdatacite https://doi.org/10.1594/pangaea.729929 https://doi.org/10.1029/94pa03062 2021-11-05T12:55:41Z We construct age models for a suite of cores from the northeast Atlantic Ocean by means of accelerator mass spectrometer dating of a key core, BOFS 5K, and correlation with the rest of the suite. The effects of bioturbation and foraminiferal species abundance gradients upon the age record are modeled using a simple equation. The degree of bioturbation is estimated by comparing modeled profiles with dispersal of the Vedde Ash layer in core 5K, and we find a mixing depth of roughly 8 cm for sand-sized material. Using this value, we estimate that age offsets between unbioturbated sediment and some foraminifera species after mixing may be up to 2500 years, with lesser effect on fine carbonate (< 10 µm) ages. The bioturbation model illustrates problems associated with the dating of 'instantaneous' events such as ash layers and the 'Heinrich' peaks of ice-rafted detritus. Correlations between core 5K and the other cores from the BOFS suite are made on the basis of similarities in the downcore profiles of oxygen and carbon isotopes, magnetic susceptibility, water and carbonate content, and via marker horizons in X radiographs and ash beds. Article in Journal/Newspaper Northeast Atlantic DataCite Metadata Store (German National Library of Science and Technology) Mid-Atlantic Ridge Shackleton |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Kasten corer D184 Discovery 1962 Biogeochemical Ocean Flux Study BOFS Joint Global Ocean Flux Study JGOFS |
spellingShingle |
Kasten corer D184 Discovery 1962 Biogeochemical Ocean Flux Study BOFS Joint Global Ocean Flux Study JGOFS Manighetti, Barbara McCave, I Nick Maslin, Mark A Shackleton, Nicholas J Age determination of sediment cores from the northern Mid-Atlantic Ridge, supplement to: Manighetti, Barbara; McCave, I Nick; Maslin, Mark A; Shackleton, Nicholas J (1995): Chronology for climate change: Developing age models for the Biogeochemical Ocean Flux Study cores. Paleoceanography, 10(3), 513-526 |
topic_facet |
Kasten corer D184 Discovery 1962 Biogeochemical Ocean Flux Study BOFS Joint Global Ocean Flux Study JGOFS |
description |
We construct age models for a suite of cores from the northeast Atlantic Ocean by means of accelerator mass spectrometer dating of a key core, BOFS 5K, and correlation with the rest of the suite. The effects of bioturbation and foraminiferal species abundance gradients upon the age record are modeled using a simple equation. The degree of bioturbation is estimated by comparing modeled profiles with dispersal of the Vedde Ash layer in core 5K, and we find a mixing depth of roughly 8 cm for sand-sized material. Using this value, we estimate that age offsets between unbioturbated sediment and some foraminifera species after mixing may be up to 2500 years, with lesser effect on fine carbonate (< 10 µm) ages. The bioturbation model illustrates problems associated with the dating of 'instantaneous' events such as ash layers and the 'Heinrich' peaks of ice-rafted detritus. Correlations between core 5K and the other cores from the BOFS suite are made on the basis of similarities in the downcore profiles of oxygen and carbon isotopes, magnetic susceptibility, water and carbonate content, and via marker horizons in X radiographs and ash beds. |
format |
Article in Journal/Newspaper |
author |
Manighetti, Barbara McCave, I Nick Maslin, Mark A Shackleton, Nicholas J |
author_facet |
Manighetti, Barbara McCave, I Nick Maslin, Mark A Shackleton, Nicholas J |
author_sort |
Manighetti, Barbara |
title |
Age determination of sediment cores from the northern Mid-Atlantic Ridge, supplement to: Manighetti, Barbara; McCave, I Nick; Maslin, Mark A; Shackleton, Nicholas J (1995): Chronology for climate change: Developing age models for the Biogeochemical Ocean Flux Study cores. Paleoceanography, 10(3), 513-526 |
title_short |
Age determination of sediment cores from the northern Mid-Atlantic Ridge, supplement to: Manighetti, Barbara; McCave, I Nick; Maslin, Mark A; Shackleton, Nicholas J (1995): Chronology for climate change: Developing age models for the Biogeochemical Ocean Flux Study cores. Paleoceanography, 10(3), 513-526 |
title_full |
Age determination of sediment cores from the northern Mid-Atlantic Ridge, supplement to: Manighetti, Barbara; McCave, I Nick; Maslin, Mark A; Shackleton, Nicholas J (1995): Chronology for climate change: Developing age models for the Biogeochemical Ocean Flux Study cores. Paleoceanography, 10(3), 513-526 |
title_fullStr |
Age determination of sediment cores from the northern Mid-Atlantic Ridge, supplement to: Manighetti, Barbara; McCave, I Nick; Maslin, Mark A; Shackleton, Nicholas J (1995): Chronology for climate change: Developing age models for the Biogeochemical Ocean Flux Study cores. Paleoceanography, 10(3), 513-526 |
title_full_unstemmed |
Age determination of sediment cores from the northern Mid-Atlantic Ridge, supplement to: Manighetti, Barbara; McCave, I Nick; Maslin, Mark A; Shackleton, Nicholas J (1995): Chronology for climate change: Developing age models for the Biogeochemical Ocean Flux Study cores. Paleoceanography, 10(3), 513-526 |
title_sort |
age determination of sediment cores from the northern mid-atlantic ridge, supplement to: manighetti, barbara; mccave, i nick; maslin, mark a; shackleton, nicholas j (1995): chronology for climate change: developing age models for the biogeochemical ocean flux study cores. paleoceanography, 10(3), 513-526 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1995 |
url |
https://dx.doi.org/10.1594/pangaea.729929 https://doi.pangaea.de/10.1594/PANGAEA.729929 |
geographic |
Mid-Atlantic Ridge Shackleton |
geographic_facet |
Mid-Atlantic Ridge Shackleton |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
https://dx.doi.org/10.1029/94pa03062 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.729929 https://doi.org/10.1029/94pa03062 |
_version_ |
1766143164929802240 |