Mg/Ca values for planktonic foraminifera N. pachyderma and G. bulloides from ocean sediment core MD02-2496 on the Vancouver margin, Northeastern Pacific Ocean, supplement to: Taylor, Meghan A; Hendy, Ingrid L; Pak, Dorothy K (2014): Deglacial ocean warming and marine margin retreat of the Cordilleran Ice Sheet in the North Pacific Ocean. Earth and Planetary Science Letters, 403, 89-98
A new, high-resolution planktonic foraminiferal Mg/Ca-based ocean temperature record has been generated for deep sea core MD02-2496, sited offshore of Vancouver Island, Western Canada during the last deglaciation (21-12 ka). The relationship between Cordilleran Ice Sheet (CIS) retreat and changing r...
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ftdatacite:10.1594/pangaea.835607 2023-05-15T16:22:29+02:00 Mg/Ca values for planktonic foraminifera N. pachyderma and G. bulloides from ocean sediment core MD02-2496 on the Vancouver margin, Northeastern Pacific Ocean, supplement to: Taylor, Meghan A; Hendy, Ingrid L; Pak, Dorothy K (2014): Deglacial ocean warming and marine margin retreat of the Cordilleran Ice Sheet in the North Pacific Ocean. Earth and Planetary Science Letters, 403, 89-98 Taylor, Meghan A Hendy, Ingrid L Pak, Dorothy K 2014 application/zip https://dx.doi.org/10.1594/pangaea.835607 https://doi.pangaea.de/10.1594/PANGAEA.835607 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.epsl.2014.06.026 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Giant piston corer MD126 Marion Dufresne 1995 article Supplementary Collection of Datasets Collection 2014 ftdatacite https://doi.org/10.1594/pangaea.835607 https://doi.org/10.1016/j.epsl.2014.06.026 2022-02-09T13:20:43Z A new, high-resolution planktonic foraminiferal Mg/Ca-based ocean temperature record has been generated for deep sea core MD02-2496, sited offshore of Vancouver Island, Western Canada during the last deglaciation (21-12 ka). The relationship between Cordilleran Ice Sheet (CIS) retreat and changing regional ocean temperatures has been reconstructed through glaciomarine sediments in MD02-2496 that capture tidewater glacier response to surface ocean thermal forcing. At CIS maximum extent, the marine margin of the ice sheet advanced onto the continental shelf. During this interval, ocean temperatures recorded by surface ocean dwelling Globigerina bulloides remained a relatively constant ~7.5°C while subsurface dwelling Neogloboquadrina pachyderma (s.) recorded temperatures of ~5°C. These ocean temperatures were sufficiently warm to induce significant melt along the tidewater ice terminus similar to modern Alaskan tidewater glacial systems. During the deglacial retreat of the CIS, the N. pachyderma temperature record shows two distinct warming steps of ~2 and 2.5°C between 17.2-16 and 15.5-14 ka respectively, coincident with ice rafting events from the CIS, while G. bulloides records an ~3°C warming from 15 to14 ka. We hypothesize that submarine melting resulting from relatively warm ocean temperatures was an important process driving ice removal from CIS tidewater glaciers during the initial stages of deglaciation. Article in Journal/Newspaper glacier* Ice Sheet Neogloboquadrina pachyderma Planktonic foraminifera Tidewater DataCite Metadata Store (German National Library of Science and Technology) Canada Pacific |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Giant piston corer MD126 Marion Dufresne 1995 |
spellingShingle |
Giant piston corer MD126 Marion Dufresne 1995 Taylor, Meghan A Hendy, Ingrid L Pak, Dorothy K Mg/Ca values for planktonic foraminifera N. pachyderma and G. bulloides from ocean sediment core MD02-2496 on the Vancouver margin, Northeastern Pacific Ocean, supplement to: Taylor, Meghan A; Hendy, Ingrid L; Pak, Dorothy K (2014): Deglacial ocean warming and marine margin retreat of the Cordilleran Ice Sheet in the North Pacific Ocean. Earth and Planetary Science Letters, 403, 89-98 |
topic_facet |
Giant piston corer MD126 Marion Dufresne 1995 |
description |
A new, high-resolution planktonic foraminiferal Mg/Ca-based ocean temperature record has been generated for deep sea core MD02-2496, sited offshore of Vancouver Island, Western Canada during the last deglaciation (21-12 ka). The relationship between Cordilleran Ice Sheet (CIS) retreat and changing regional ocean temperatures has been reconstructed through glaciomarine sediments in MD02-2496 that capture tidewater glacier response to surface ocean thermal forcing. At CIS maximum extent, the marine margin of the ice sheet advanced onto the continental shelf. During this interval, ocean temperatures recorded by surface ocean dwelling Globigerina bulloides remained a relatively constant ~7.5°C while subsurface dwelling Neogloboquadrina pachyderma (s.) recorded temperatures of ~5°C. These ocean temperatures were sufficiently warm to induce significant melt along the tidewater ice terminus similar to modern Alaskan tidewater glacial systems. During the deglacial retreat of the CIS, the N. pachyderma temperature record shows two distinct warming steps of ~2 and 2.5°C between 17.2-16 and 15.5-14 ka respectively, coincident with ice rafting events from the CIS, while G. bulloides records an ~3°C warming from 15 to14 ka. We hypothesize that submarine melting resulting from relatively warm ocean temperatures was an important process driving ice removal from CIS tidewater glaciers during the initial stages of deglaciation. |
format |
Article in Journal/Newspaper |
author |
Taylor, Meghan A Hendy, Ingrid L Pak, Dorothy K |
author_facet |
Taylor, Meghan A Hendy, Ingrid L Pak, Dorothy K |
author_sort |
Taylor, Meghan A |
title |
Mg/Ca values for planktonic foraminifera N. pachyderma and G. bulloides from ocean sediment core MD02-2496 on the Vancouver margin, Northeastern Pacific Ocean, supplement to: Taylor, Meghan A; Hendy, Ingrid L; Pak, Dorothy K (2014): Deglacial ocean warming and marine margin retreat of the Cordilleran Ice Sheet in the North Pacific Ocean. Earth and Planetary Science Letters, 403, 89-98 |
title_short |
Mg/Ca values for planktonic foraminifera N. pachyderma and G. bulloides from ocean sediment core MD02-2496 on the Vancouver margin, Northeastern Pacific Ocean, supplement to: Taylor, Meghan A; Hendy, Ingrid L; Pak, Dorothy K (2014): Deglacial ocean warming and marine margin retreat of the Cordilleran Ice Sheet in the North Pacific Ocean. Earth and Planetary Science Letters, 403, 89-98 |
title_full |
Mg/Ca values for planktonic foraminifera N. pachyderma and G. bulloides from ocean sediment core MD02-2496 on the Vancouver margin, Northeastern Pacific Ocean, supplement to: Taylor, Meghan A; Hendy, Ingrid L; Pak, Dorothy K (2014): Deglacial ocean warming and marine margin retreat of the Cordilleran Ice Sheet in the North Pacific Ocean. Earth and Planetary Science Letters, 403, 89-98 |
title_fullStr |
Mg/Ca values for planktonic foraminifera N. pachyderma and G. bulloides from ocean sediment core MD02-2496 on the Vancouver margin, Northeastern Pacific Ocean, supplement to: Taylor, Meghan A; Hendy, Ingrid L; Pak, Dorothy K (2014): Deglacial ocean warming and marine margin retreat of the Cordilleran Ice Sheet in the North Pacific Ocean. Earth and Planetary Science Letters, 403, 89-98 |
title_full_unstemmed |
Mg/Ca values for planktonic foraminifera N. pachyderma and G. bulloides from ocean sediment core MD02-2496 on the Vancouver margin, Northeastern Pacific Ocean, supplement to: Taylor, Meghan A; Hendy, Ingrid L; Pak, Dorothy K (2014): Deglacial ocean warming and marine margin retreat of the Cordilleran Ice Sheet in the North Pacific Ocean. Earth and Planetary Science Letters, 403, 89-98 |
title_sort |
mg/ca values for planktonic foraminifera n. pachyderma and g. bulloides from ocean sediment core md02-2496 on the vancouver margin, northeastern pacific ocean, supplement to: taylor, meghan a; hendy, ingrid l; pak, dorothy k (2014): deglacial ocean warming and marine margin retreat of the cordilleran ice sheet in the north pacific ocean. earth and planetary science letters, 403, 89-98 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2014 |
url |
https://dx.doi.org/10.1594/pangaea.835607 https://doi.pangaea.de/10.1594/PANGAEA.835607 |
geographic |
Canada Pacific |
geographic_facet |
Canada Pacific |
genre |
glacier* Ice Sheet Neogloboquadrina pachyderma Planktonic foraminifera Tidewater |
genre_facet |
glacier* Ice Sheet Neogloboquadrina pachyderma Planktonic foraminifera Tidewater |
op_relation |
https://dx.doi.org/10.1016/j.epsl.2014.06.026 |
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.835607 https://doi.org/10.1016/j.epsl.2014.06.026 |
_version_ |
1766010468788338688 |