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Growth, dynamics and deglaciation of the last British-Irish ice sheet: the deep-sea ice-rafted detritus record

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Growth, dynamics and deglaciation of the last British-Irish ice sheet : the deep-sea ice-rafted detritus record. / Scourse, James D.; Haapaniemi, Anna I.; Colmenero-Hidalgo, Elena; Peck, Victoria L.; Hall, Ian R.; Austin, William; Knutz, Paul C.; Zahn, Rainer.

In: Quaternary Science Reviews, Vol. 28, No. 27-28, 12.2009, p. 3066-3084.

Research output: Contribution to journalReview article

Harvard

Scourse, JD, Haapaniemi, AI, Colmenero-Hidalgo, E, Peck, VL, Hall, IR, Austin, W, Knutz, PC & Zahn, R 2009, 'Growth, dynamics and deglaciation of the last British-Irish ice sheet: the deep-sea ice-rafted detritus record' Quaternary Science Reviews, vol. 28, no. 27-28, pp. 3066-3084. https://doi.org/10.1016/j.quascirev.2009.08.009

APA

Scourse, J. D., Haapaniemi, A. I., Colmenero-Hidalgo, E., Peck, V. L., Hall, I. R., Austin, W., ... Zahn, R. (2009). Growth, dynamics and deglaciation of the last British-Irish ice sheet: the deep-sea ice-rafted detritus record. Quaternary Science Reviews, 28(27-28), 3066-3084. https://doi.org/10.1016/j.quascirev.2009.08.009

Vancouver

Scourse JD, Haapaniemi AI, Colmenero-Hidalgo E, Peck VL, Hall IR, Austin W et al. Growth, dynamics and deglaciation of the last British-Irish ice sheet: the deep-sea ice-rafted detritus record. Quaternary Science Reviews. 2009 Dec;28(27-28):3066-3084. https://doi.org/10.1016/j.quascirev.2009.08.009

Author

Scourse, James D. ; Haapaniemi, Anna I. ; Colmenero-Hidalgo, Elena ; Peck, Victoria L. ; Hall, Ian R. ; Austin, William ; Knutz, Paul C. ; Zahn, Rainer. / Growth, dynamics and deglaciation of the last British-Irish ice sheet : the deep-sea ice-rafted detritus record. In: Quaternary Science Reviews. 2009 ; Vol. 28, No. 27-28. pp. 3066-3084.

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@article{b7e915f01237426aa487228a7f0f6f60,
title = "Growth, dynamics and deglaciation of the last British-Irish ice sheet: the deep-sea ice-rafted detritus record",
abstract = "The evolution and dynamics of the last British-Irish Ice Sheet (BIIS) have hitherto largely been reconstructed from onshore and shallow marine glacial geological and geomorphological data. This reconstruction has been problematic because these sequences and data are spatially and temporally incomplete and fragmentary. In order to enhance BIIS reconstruction, we present a compilation of new and previously published ice-rafted detritus (IRD) flux and concentration data from high-resolution sediment cores recovered from the NE Atlantic deep-sea continental slope adjacent to the last BIIS. These cores are situated adjacent to the full latitudinal extent of the last BIIS and cover Marine Isotope Stages (MIS) 2 and 3. Age models are based on radiocarbon dating and graphical tuning of abundances of the polar planktonic foraminifera Neogloboquadrina pachyderma sinistral ({\%} Nps) to the Greenland GISP2 ice core record. Multiple IRD fingerprinting techniques indicate that, at the selected locations, most IRD are sourced from adjacent MIS ice streams except in the centre of Heinrich (H) layers in which IRD shows a prominent Laurentide Ice Sheet provenance. IRD flux data are interpreted with reference to a conceptual model explaining the relations between flux, North Atlantic hydrography and ice dynamics. Both positive and rapid negative mass balance can cause increases, and prominent peaks, in IRD flux. First-order interpretation of the IRD record indicates the timing of the presence of the MIS with an actively calving marine margin. The records show a coherent latitudinal, but partly phased, signal during MIS 3 and 2. Published data indicate that the last MIS initiated during the MIS 514 cooling transition; renewed growth just before H5 (46 ka) was succeeded by very strong millennial-scale variability apparently corresponding with Dansgaard-Oeschger (DO) cycles closely coupled to millennial-scale climate variability in the North Atlantic region involving latitudinal migration of the North Atlantic Polar Front. This indicates that the previously defined {"}precursor events{"} are not uniquely associated with H events but are part of the millennial-scale variability. Major growth of the ice sheet occurred after 29 ka with the Barra Ice Stream attaining a shelf-edge position and generating turbiditic flows on the Barra-Donegal Fan at similar to 27 ka. The ice sheet reached its maximum extent at H2 (24 ka), earlier than interpreted in previous studies. Rapid retreat, initially characterised by peak IRD flux, during Greenland Interstadial 2 (23 ka) was followed by readvance between 22 and 16 ka. Readvance during HI was only characterised by BIIS ice streams draining central dome(s) of the ice sheet, and was followed by rapid deglaciation and ice exhaustion. The evidence for a calving margin and IRD supply from the MIS during Greenland Stadial 1 (Younger Dryas event) is equivocal. The timing of the initiation. maximum extent, deglacial and readvance phases of the BUS interpreted from the IRD flux record is strongly supported by recent independent data from both the Irish Sea and North Sea sectors of the ice sheet. (C) 2009 Elsevier Ltd. All rights reserved.",
keywords = "NORTH-ATLANTIC OCEAN, EUROPEAN CONTINENTAL-MARGIN, BOTTOM-CURRENT PATHWAYS, ABRUPT CLIMATIC-CHANGE, HEINRICH EVENTS, GLACIAL MAXIMUM, NORTHEASTERN ATLANTIC, BARRA-FAN, RADIOCARBON CONSTRAINTS, QUATERNARY GLACIATIONS",
author = "Scourse, {James D.} and Haapaniemi, {Anna I.} and Elena Colmenero-Hidalgo and Peck, {Victoria L.} and Hall, {Ian R.} and William Austin and Knutz, {Paul C.} and Rainer Zahn",
year = "2009",
month = "12",
doi = "10.1016/j.quascirev.2009.08.009",
language = "English",
volume = "28",
pages = "3066--3084",
journal = "Quaternary Science Reviews",
issn = "0277-3791",
publisher = "PERGAMON-ELSEVIER SCIENCE LTD",
number = "27-28",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Growth, dynamics and deglaciation of the last British-Irish ice sheet

T2 - Quaternary Science Reviews

AU - Scourse, James D.

AU - Haapaniemi, Anna I.

AU - Colmenero-Hidalgo, Elena

AU - Peck, Victoria L.

AU - Hall, Ian R.

AU - Austin, William

AU - Knutz, Paul C.

AU - Zahn, Rainer

PY - 2009/12

Y1 - 2009/12

N2 - The evolution and dynamics of the last British-Irish Ice Sheet (BIIS) have hitherto largely been reconstructed from onshore and shallow marine glacial geological and geomorphological data. This reconstruction has been problematic because these sequences and data are spatially and temporally incomplete and fragmentary. In order to enhance BIIS reconstruction, we present a compilation of new and previously published ice-rafted detritus (IRD) flux and concentration data from high-resolution sediment cores recovered from the NE Atlantic deep-sea continental slope adjacent to the last BIIS. These cores are situated adjacent to the full latitudinal extent of the last BIIS and cover Marine Isotope Stages (MIS) 2 and 3. Age models are based on radiocarbon dating and graphical tuning of abundances of the polar planktonic foraminifera Neogloboquadrina pachyderma sinistral (% Nps) to the Greenland GISP2 ice core record. Multiple IRD fingerprinting techniques indicate that, at the selected locations, most IRD are sourced from adjacent MIS ice streams except in the centre of Heinrich (H) layers in which IRD shows a prominent Laurentide Ice Sheet provenance. IRD flux data are interpreted with reference to a conceptual model explaining the relations between flux, North Atlantic hydrography and ice dynamics. Both positive and rapid negative mass balance can cause increases, and prominent peaks, in IRD flux. First-order interpretation of the IRD record indicates the timing of the presence of the MIS with an actively calving marine margin. The records show a coherent latitudinal, but partly phased, signal during MIS 3 and 2. Published data indicate that the last MIS initiated during the MIS 514 cooling transition; renewed growth just before H5 (46 ka) was succeeded by very strong millennial-scale variability apparently corresponding with Dansgaard-Oeschger (DO) cycles closely coupled to millennial-scale climate variability in the North Atlantic region involving latitudinal migration of the North Atlantic Polar Front. This indicates that the previously defined "precursor events" are not uniquely associated with H events but are part of the millennial-scale variability. Major growth of the ice sheet occurred after 29 ka with the Barra Ice Stream attaining a shelf-edge position and generating turbiditic flows on the Barra-Donegal Fan at similar to 27 ka. The ice sheet reached its maximum extent at H2 (24 ka), earlier than interpreted in previous studies. Rapid retreat, initially characterised by peak IRD flux, during Greenland Interstadial 2 (23 ka) was followed by readvance between 22 and 16 ka. Readvance during HI was only characterised by BIIS ice streams draining central dome(s) of the ice sheet, and was followed by rapid deglaciation and ice exhaustion. The evidence for a calving margin and IRD supply from the MIS during Greenland Stadial 1 (Younger Dryas event) is equivocal. The timing of the initiation. maximum extent, deglacial and readvance phases of the BUS interpreted from the IRD flux record is strongly supported by recent independent data from both the Irish Sea and North Sea sectors of the ice sheet. (C) 2009 Elsevier Ltd. All rights reserved.

AB - The evolution and dynamics of the last British-Irish Ice Sheet (BIIS) have hitherto largely been reconstructed from onshore and shallow marine glacial geological and geomorphological data. This reconstruction has been problematic because these sequences and data are spatially and temporally incomplete and fragmentary. In order to enhance BIIS reconstruction, we present a compilation of new and previously published ice-rafted detritus (IRD) flux and concentration data from high-resolution sediment cores recovered from the NE Atlantic deep-sea continental slope adjacent to the last BIIS. These cores are situated adjacent to the full latitudinal extent of the last BIIS and cover Marine Isotope Stages (MIS) 2 and 3. Age models are based on radiocarbon dating and graphical tuning of abundances of the polar planktonic foraminifera Neogloboquadrina pachyderma sinistral (% Nps) to the Greenland GISP2 ice core record. Multiple IRD fingerprinting techniques indicate that, at the selected locations, most IRD are sourced from adjacent MIS ice streams except in the centre of Heinrich (H) layers in which IRD shows a prominent Laurentide Ice Sheet provenance. IRD flux data are interpreted with reference to a conceptual model explaining the relations between flux, North Atlantic hydrography and ice dynamics. Both positive and rapid negative mass balance can cause increases, and prominent peaks, in IRD flux. First-order interpretation of the IRD record indicates the timing of the presence of the MIS with an actively calving marine margin. The records show a coherent latitudinal, but partly phased, signal during MIS 3 and 2. Published data indicate that the last MIS initiated during the MIS 514 cooling transition; renewed growth just before H5 (46 ka) was succeeded by very strong millennial-scale variability apparently corresponding with Dansgaard-Oeschger (DO) cycles closely coupled to millennial-scale climate variability in the North Atlantic region involving latitudinal migration of the North Atlantic Polar Front. This indicates that the previously defined "precursor events" are not uniquely associated with H events but are part of the millennial-scale variability. Major growth of the ice sheet occurred after 29 ka with the Barra Ice Stream attaining a shelf-edge position and generating turbiditic flows on the Barra-Donegal Fan at similar to 27 ka. The ice sheet reached its maximum extent at H2 (24 ka), earlier than interpreted in previous studies. Rapid retreat, initially characterised by peak IRD flux, during Greenland Interstadial 2 (23 ka) was followed by readvance between 22 and 16 ka. Readvance during HI was only characterised by BIIS ice streams draining central dome(s) of the ice sheet, and was followed by rapid deglaciation and ice exhaustion. The evidence for a calving margin and IRD supply from the MIS during Greenland Stadial 1 (Younger Dryas event) is equivocal. The timing of the initiation. maximum extent, deglacial and readvance phases of the BUS interpreted from the IRD flux record is strongly supported by recent independent data from both the Irish Sea and North Sea sectors of the ice sheet. (C) 2009 Elsevier Ltd. All rights reserved.

KW - NORTH-ATLANTIC OCEAN

KW - EUROPEAN CONTINENTAL-MARGIN

KW - BOTTOM-CURRENT PATHWAYS

KW - ABRUPT CLIMATIC-CHANGE

KW - HEINRICH EVENTS

KW - GLACIAL MAXIMUM

KW - NORTHEASTERN ATLANTIC

KW - BARRA-FAN

KW - RADIOCARBON CONSTRAINTS

KW - QUATERNARY GLACIATIONS

UR - http://www.scopus.com/inward/record.url?scp=70450269230&partnerID=8YFLogxK

U2 - 10.1016/j.quascirev.2009.08.009

DO - 10.1016/j.quascirev.2009.08.009

M3 - Review article

VL - 28

SP - 3066

EP - 3084

JO - Quaternary Science Reviews

JF - Quaternary Science Reviews

SN - 0277-3791

IS - 27-28

ER -

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ID: 2110395