Late Glacial retreat of the Lancaster Sound Ice Sheet and early Holocene Parry Channel throughflow; 2008029-59CC (Composite Core), 2008029-49CC, 2013029-64PC (Piston Core) datasets (2008)
Multiple proxies in three sediment cores from Northwestern Baffin Bay document the timing of Lancaster Sound Ice Stream (LSIS) retreat that led to Arctic-Atlantic throughflow in Parry Channel, an important source of freshwater that can impact the Atlantic Meridional Overturning Circulation (AMOC). T...
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Arctic Data Center
2022
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Online Access: | https://doi.org/10.18739/A2GM81Q31 |
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dataone:doi:10.18739/A2GM81Q31 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Arctic Data Center (via DataONE) |
op_collection_id |
dataone:urn:node:ARCTIC |
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unknown |
topic |
Parry BBDC Lancaster Laurentide Arctic Benthic Baffin Nares Planktic Retreat Channel Deglaciation Angulogerina flurens Astrononion gallowayi Bolivina arctica Brizalina pseudopunctata Bucella frigida Buccella tenerrima Buliminella elegantissima Cassidulina neoteretis Cassidulina reniforme Ceratobulimina arctica Cibicides lobulatus Cyclogra involvens Elphidium albiumbilicatum Elphiduim asklundi Elphidium excavatum Epistominella arctica Epistominella exigua Epistominella takayanagii Eoeponidella pulchella Epistominella vitrea Fissurina crebra Fissurina laevigata Fissurina globosa Fissurina serrata Fissurina maginata Globobulimina auriculata arctica Glomulina oculus Guttulina lactea Hannai arctica Islandiella norcrossi Islandiella helenae Lagina laevis Melonis barleeanus Nonionella labradorica Nonionella iridea Nonionella turgida Oolina apiculata Oolina caudigera Oridorsalis umbonatus Parafissurina fusuliformis Patellina corugata Procerolagena gracilis Quinqueloculina arctica Quinqueloculina seminula Robertinoides charlottensis Stainforthia concava Stainforthia feylingi Stetsonia horvathi Triloculina tricarinata Adercotryma glomerata Cribrostomoides crassimargo Cribrostomoides jeffreysi Cuneata arctica Portatrochammina bipolaris Reophax bilocularis Reophax catella Reophax catenata Reophax dentaliniformis Reophax horrida Reophax guttifer Reophax pilolifera Reophax scorpiurus Saccammina atlantica Saccammina diflugiformis Saccammina sphaera Silicosigmoilina groenlandica Spiroplectammina biformis Textularia earlandi Textularia torquata Pseudobolivina antarctica Tritaxis bullata Trochammina globigeriniformis Trochammina cf. inflata Trochammina japonica Trochammina nitida Trochammina orchracea Trochammina quadriloba Neogloboquadrina pachyderma Globigerina bulloides Cornuspira involvens Elphidium clavatum Elphidium magellanicum Haplophragmoides cf. bradyi flurens gallowayi arctica pseudopunctata frigida tenerrima elegantissima neoteretis reniforme lobulatus involvens albiumbilicatum asklundi excavatum exigua takayanagii pulchella vitrea crebra laevigata globosa serrata maginata auriculata arctica oculus lactea norcrossi helenae laevis barleeanus labradorica iridea turgida apiculata caudigera umbonatus fusuliformis corugata gracilis seminula charlottensis concava feylingi horvathi tricarinata glomerata crassimargo jeffreysi bipolaris bilocularis catella catenata dentaliniformis horrida guttifer pilolifera scorpiurus atlantica diflugiformis sphaera groenlandica biformis earlandi torquata antarctica bullata globigeriniformis cf. inflata japonica nitida orchracea quadriloba pachyderma bulloides clavatum magellanicum cf. bradyi |
spellingShingle |
Parry BBDC Lancaster Laurentide Arctic Benthic Baffin Nares Planktic Retreat Channel Deglaciation Angulogerina flurens Astrononion gallowayi Bolivina arctica Brizalina pseudopunctata Bucella frigida Buccella tenerrima Buliminella elegantissima Cassidulina neoteretis Cassidulina reniforme Ceratobulimina arctica Cibicides lobulatus Cyclogra involvens Elphidium albiumbilicatum Elphiduim asklundi Elphidium excavatum Epistominella arctica Epistominella exigua Epistominella takayanagii Eoeponidella pulchella Epistominella vitrea Fissurina crebra Fissurina laevigata Fissurina globosa Fissurina serrata Fissurina maginata Globobulimina auriculata arctica Glomulina oculus Guttulina lactea Hannai arctica Islandiella norcrossi Islandiella helenae Lagina laevis Melonis barleeanus Nonionella labradorica Nonionella iridea Nonionella turgida Oolina apiculata Oolina caudigera Oridorsalis umbonatus Parafissurina fusuliformis Patellina corugata Procerolagena gracilis Quinqueloculina arctica Quinqueloculina seminula Robertinoides charlottensis Stainforthia concava Stainforthia feylingi Stetsonia horvathi Triloculina tricarinata Adercotryma glomerata Cribrostomoides crassimargo Cribrostomoides jeffreysi Cuneata arctica Portatrochammina bipolaris Reophax bilocularis Reophax catella Reophax catenata Reophax dentaliniformis Reophax horrida Reophax guttifer Reophax pilolifera Reophax scorpiurus Saccammina atlantica Saccammina diflugiformis Saccammina sphaera Silicosigmoilina groenlandica Spiroplectammina biformis Textularia earlandi Textularia torquata Pseudobolivina antarctica Tritaxis bullata Trochammina globigeriniformis Trochammina cf. inflata Trochammina japonica Trochammina nitida Trochammina orchracea Trochammina quadriloba Neogloboquadrina pachyderma Globigerina bulloides Cornuspira involvens Elphidium clavatum Elphidium magellanicum Haplophragmoides cf. bradyi flurens gallowayi arctica pseudopunctata frigida tenerrima elegantissima neoteretis reniforme lobulatus involvens albiumbilicatum asklundi excavatum exigua takayanagii pulchella vitrea crebra laevigata globosa serrata maginata auriculata arctica oculus lactea norcrossi helenae laevis barleeanus labradorica iridea turgida apiculata caudigera umbonatus fusuliformis corugata gracilis seminula charlottensis concava feylingi horvathi tricarinata glomerata crassimargo jeffreysi bipolaris bilocularis catella catenata dentaliniformis horrida guttifer pilolifera scorpiurus atlantica diflugiformis sphaera groenlandica biformis earlandi torquata antarctica bullata globigeriniformis cf. inflata japonica nitida orchracea quadriloba pachyderma bulloides clavatum magellanicum cf. bradyi Robert V. Kelleher Anne Jennings John T. Andrews Nicole Brooks Thomas Marchitto Shaoting "Cici" Feng Lineke Woelders Late Glacial retreat of the Lancaster Sound Ice Sheet and early Holocene Parry Channel throughflow; 2008029-59CC (Composite Core), 2008029-49CC, 2013029-64PC (Piston Core) datasets (2008) |
topic_facet |
Parry BBDC Lancaster Laurentide Arctic Benthic Baffin Nares Planktic Retreat Channel Deglaciation Angulogerina flurens Astrononion gallowayi Bolivina arctica Brizalina pseudopunctata Bucella frigida Buccella tenerrima Buliminella elegantissima Cassidulina neoteretis Cassidulina reniforme Ceratobulimina arctica Cibicides lobulatus Cyclogra involvens Elphidium albiumbilicatum Elphiduim asklundi Elphidium excavatum Epistominella arctica Epistominella exigua Epistominella takayanagii Eoeponidella pulchella Epistominella vitrea Fissurina crebra Fissurina laevigata Fissurina globosa Fissurina serrata Fissurina maginata Globobulimina auriculata arctica Glomulina oculus Guttulina lactea Hannai arctica Islandiella norcrossi Islandiella helenae Lagina laevis Melonis barleeanus Nonionella labradorica Nonionella iridea Nonionella turgida Oolina apiculata Oolina caudigera Oridorsalis umbonatus Parafissurina fusuliformis Patellina corugata Procerolagena gracilis Quinqueloculina arctica Quinqueloculina seminula Robertinoides charlottensis Stainforthia concava Stainforthia feylingi Stetsonia horvathi Triloculina tricarinata Adercotryma glomerata Cribrostomoides crassimargo Cribrostomoides jeffreysi Cuneata arctica Portatrochammina bipolaris Reophax bilocularis Reophax catella Reophax catenata Reophax dentaliniformis Reophax horrida Reophax guttifer Reophax pilolifera Reophax scorpiurus Saccammina atlantica Saccammina diflugiformis Saccammina sphaera Silicosigmoilina groenlandica Spiroplectammina biformis Textularia earlandi Textularia torquata Pseudobolivina antarctica Tritaxis bullata Trochammina globigeriniformis Trochammina cf. inflata Trochammina japonica Trochammina nitida Trochammina orchracea Trochammina quadriloba Neogloboquadrina pachyderma Globigerina bulloides Cornuspira involvens Elphidium clavatum Elphidium magellanicum Haplophragmoides cf. bradyi flurens gallowayi arctica pseudopunctata frigida tenerrima elegantissima neoteretis reniforme lobulatus involvens albiumbilicatum asklundi excavatum exigua takayanagii pulchella vitrea crebra laevigata globosa serrata maginata auriculata arctica oculus lactea norcrossi helenae laevis barleeanus labradorica iridea turgida apiculata caudigera umbonatus fusuliformis corugata gracilis seminula charlottensis concava feylingi horvathi tricarinata glomerata crassimargo jeffreysi bipolaris bilocularis catella catenata dentaliniformis horrida guttifer pilolifera scorpiurus atlantica diflugiformis sphaera groenlandica biformis earlandi torquata antarctica bullata globigeriniformis cf. inflata japonica nitida orchracea quadriloba pachyderma bulloides clavatum magellanicum cf. bradyi |
description |
Multiple proxies in three sediment cores from Northwestern Baffin Bay document the timing of Lancaster Sound Ice Stream (LSIS) retreat that led to Arctic-Atlantic throughflow in Parry Channel, an important source of freshwater that can impact the Atlantic Meridional Overturning Circulation (AMOC). The Late Glacial to Holocene timing of ice retreat and channel opening and the responses of the regional ocean environment to these events are presented. We use quantitative mineral composition, foraminiferal assemblages, biogenic silica, ice-rafted debris (IRD), and 14C (carbon-14)-based age models to document and date the events and environmental changes occurring during deglaciation of this major marine channel. Findings show that retreat of the LSIS into Lancaster Sound occurred before ~15.3 cal ka BP (calculated kilo annum before present), about 800 years before the onset of major ice berg calving events from the LSIS, named the Baffin Bay Detrital carbonates events (BBDC 1 and BBDC 0). The end of BBDC 0 occurred at ~10.6 cal ka BP, which coincides with the opening of Parry Channel. A marine environment productive of calcareous benthic and planktic foraminifera, with diminished meltwater, seasonal sea ice, warmer summer temperatures and inflowing, nutrient-rich Arctic Surface Water characterizes the interval between the opening of Parry Channel and the opening of Nares Strait. Paired planktic and benthic 14C ages over this 2200-year interval show diminishing age offsets suggesting progressive mixing of the upper ~900 m (meters) of the water column. The opening of Nares Strait by ~8.2 cal ka BP coincides with increased biogenic silica in the form of abundant, large centric diatoms and dissolution of CaCO3 (calcium carbonate). The paucity of calcareous organisms after 8.2 cal ka BP resulted in poor chronological control in the cores to interpret changing environments after 8.2 cal ka BP. |
format |
Dataset |
author |
Robert V. Kelleher Anne Jennings John T. Andrews Nicole Brooks Thomas Marchitto Shaoting "Cici" Feng Lineke Woelders |
author_facet |
Robert V. Kelleher Anne Jennings John T. Andrews Nicole Brooks Thomas Marchitto Shaoting "Cici" Feng Lineke Woelders |
author_sort |
Robert V. Kelleher |
title |
Late Glacial retreat of the Lancaster Sound Ice Sheet and early Holocene Parry Channel throughflow; 2008029-59CC (Composite Core), 2008029-49CC, 2013029-64PC (Piston Core) datasets (2008) |
title_short |
Late Glacial retreat of the Lancaster Sound Ice Sheet and early Holocene Parry Channel throughflow; 2008029-59CC (Composite Core), 2008029-49CC, 2013029-64PC (Piston Core) datasets (2008) |
title_full |
Late Glacial retreat of the Lancaster Sound Ice Sheet and early Holocene Parry Channel throughflow; 2008029-59CC (Composite Core), 2008029-49CC, 2013029-64PC (Piston Core) datasets (2008) |
title_fullStr |
Late Glacial retreat of the Lancaster Sound Ice Sheet and early Holocene Parry Channel throughflow; 2008029-59CC (Composite Core), 2008029-49CC, 2013029-64PC (Piston Core) datasets (2008) |
title_full_unstemmed |
Late Glacial retreat of the Lancaster Sound Ice Sheet and early Holocene Parry Channel throughflow; 2008029-59CC (Composite Core), 2008029-49CC, 2013029-64PC (Piston Core) datasets (2008) |
title_sort |
late glacial retreat of the lancaster sound ice sheet and early holocene parry channel throughflow; 2008029-59cc (composite core), 2008029-49cc, 2013029-64pc (piston core) datasets (2008) |
publisher |
Arctic Data Center |
publishDate |
2022 |
url |
https://doi.org/10.18739/A2GM81Q31 |
op_coverage |
Our datasets span three arctic seafloor cores: one in northeast Baffin Bay (2013029-64PC) and two cores in eastern Lancaster Sound (2008029-49CC and 2008029-59CC). A fourth core in northeast Baffin Bay (2008029-34PC) provided an additional Benthic & Planktic paired 14C radiocarbon date to help constrain our reservoir age corrections for our radiocarbon dates and age-depth models. ENVELOPE(-86.0,-62.0,75.0,72.0) BEGINDATE: 2008-01-01T00:00:00Z ENDDATE: 2008-01-01T00:00:00Z |
long_lat |
ENVELOPE(-83.999,-83.999,74.218,74.218) ENVELOPE(158.167,158.167,-81.450,-81.450) ENVELOPE(-62.417,-62.417,-64.283,-64.283) ENVELOPE(-86.0,-62.0,75.0,72.0) |
geographic |
Arctic Baffin Bay Lancaster Sound Nares Parry |
geographic_facet |
Arctic Baffin Bay Lancaster Sound Nares Parry |
genre |
Antarc* Antarctica Arctic Baffin Bay Baffin Bay Baffin Foraminifera* Ice Sheet Lancaster Sound Nares strait Neogloboquadrina pachyderma Parry Channel Sea ice |
genre_facet |
Antarc* Antarctica Arctic Baffin Bay Baffin Bay Baffin Foraminifera* Ice Sheet Lancaster Sound Nares strait Neogloboquadrina pachyderma Parry Channel Sea ice |
op_doi |
https://doi.org/10.18739/A2GM81Q31 |
_version_ |
1782012046065270784 |
spelling |
dataone:doi:10.18739/A2GM81Q31 2023-11-08T14:14:13+01:00 Late Glacial retreat of the Lancaster Sound Ice Sheet and early Holocene Parry Channel throughflow; 2008029-59CC (Composite Core), 2008029-49CC, 2013029-64PC (Piston Core) datasets (2008) Robert V. Kelleher Anne Jennings John T. Andrews Nicole Brooks Thomas Marchitto Shaoting "Cici" Feng Lineke Woelders Our datasets span three arctic seafloor cores: one in northeast Baffin Bay (2013029-64PC) and two cores in eastern Lancaster Sound (2008029-49CC and 2008029-59CC). A fourth core in northeast Baffin Bay (2008029-34PC) provided an additional Benthic & Planktic paired 14C radiocarbon date to help constrain our reservoir age corrections for our radiocarbon dates and age-depth models. ENVELOPE(-86.0,-62.0,75.0,72.0) BEGINDATE: 2008-01-01T00:00:00Z ENDDATE: 2008-01-01T00:00:00Z 2022-01-01T00:00:00Z https://doi.org/10.18739/A2GM81Q31 unknown Arctic Data Center Parry BBDC Lancaster Laurentide Arctic Benthic Baffin Nares Planktic Retreat Channel Deglaciation Angulogerina flurens Astrononion gallowayi Bolivina arctica Brizalina pseudopunctata Bucella frigida Buccella tenerrima Buliminella elegantissima Cassidulina neoteretis Cassidulina reniforme Ceratobulimina arctica Cibicides lobulatus Cyclogra involvens Elphidium albiumbilicatum Elphiduim asklundi Elphidium excavatum Epistominella arctica Epistominella exigua Epistominella takayanagii Eoeponidella pulchella Epistominella vitrea Fissurina crebra Fissurina laevigata Fissurina globosa Fissurina serrata Fissurina maginata Globobulimina auriculata arctica Glomulina oculus Guttulina lactea Hannai arctica Islandiella norcrossi Islandiella helenae Lagina laevis Melonis barleeanus Nonionella labradorica Nonionella iridea Nonionella turgida Oolina apiculata Oolina caudigera Oridorsalis umbonatus Parafissurina fusuliformis Patellina corugata Procerolagena gracilis Quinqueloculina arctica Quinqueloculina seminula Robertinoides charlottensis Stainforthia concava Stainforthia feylingi Stetsonia horvathi Triloculina tricarinata Adercotryma glomerata Cribrostomoides crassimargo Cribrostomoides jeffreysi Cuneata arctica Portatrochammina bipolaris Reophax bilocularis Reophax catella Reophax catenata Reophax dentaliniformis Reophax horrida Reophax guttifer Reophax pilolifera Reophax scorpiurus Saccammina atlantica Saccammina diflugiformis Saccammina sphaera Silicosigmoilina groenlandica Spiroplectammina biformis Textularia earlandi Textularia torquata Pseudobolivina antarctica Tritaxis bullata Trochammina globigeriniformis Trochammina cf. inflata Trochammina japonica Trochammina nitida Trochammina orchracea Trochammina quadriloba Neogloboquadrina pachyderma Globigerina bulloides Cornuspira involvens Elphidium clavatum Elphidium magellanicum Haplophragmoides cf. bradyi flurens gallowayi arctica pseudopunctata frigida tenerrima elegantissima neoteretis reniforme lobulatus involvens albiumbilicatum asklundi excavatum exigua takayanagii pulchella vitrea crebra laevigata globosa serrata maginata auriculata arctica oculus lactea norcrossi helenae laevis barleeanus labradorica iridea turgida apiculata caudigera umbonatus fusuliformis corugata gracilis seminula charlottensis concava feylingi horvathi tricarinata glomerata crassimargo jeffreysi bipolaris bilocularis catella catenata dentaliniformis horrida guttifer pilolifera scorpiurus atlantica diflugiformis sphaera groenlandica biformis earlandi torquata antarctica bullata globigeriniformis cf. inflata japonica nitida orchracea quadriloba pachyderma bulloides clavatum magellanicum cf. bradyi Dataset 2022 dataone:urn:node:ARCTIC https://doi.org/10.18739/A2GM81Q31 2023-11-08T13:47:54Z Multiple proxies in three sediment cores from Northwestern Baffin Bay document the timing of Lancaster Sound Ice Stream (LSIS) retreat that led to Arctic-Atlantic throughflow in Parry Channel, an important source of freshwater that can impact the Atlantic Meridional Overturning Circulation (AMOC). The Late Glacial to Holocene timing of ice retreat and channel opening and the responses of the regional ocean environment to these events are presented. We use quantitative mineral composition, foraminiferal assemblages, biogenic silica, ice-rafted debris (IRD), and 14C (carbon-14)-based age models to document and date the events and environmental changes occurring during deglaciation of this major marine channel. Findings show that retreat of the LSIS into Lancaster Sound occurred before ~15.3 cal ka BP (calculated kilo annum before present), about 800 years before the onset of major ice berg calving events from the LSIS, named the Baffin Bay Detrital carbonates events (BBDC 1 and BBDC 0). The end of BBDC 0 occurred at ~10.6 cal ka BP, which coincides with the opening of Parry Channel. A marine environment productive of calcareous benthic and planktic foraminifera, with diminished meltwater, seasonal sea ice, warmer summer temperatures and inflowing, nutrient-rich Arctic Surface Water characterizes the interval between the opening of Parry Channel and the opening of Nares Strait. Paired planktic and benthic 14C ages over this 2200-year interval show diminishing age offsets suggesting progressive mixing of the upper ~900 m (meters) of the water column. The opening of Nares Strait by ~8.2 cal ka BP coincides with increased biogenic silica in the form of abundant, large centric diatoms and dissolution of CaCO3 (calcium carbonate). The paucity of calcareous organisms after 8.2 cal ka BP resulted in poor chronological control in the cores to interpret changing environments after 8.2 cal ka BP. Dataset Antarc* Antarctica Arctic Baffin Bay Baffin Bay Baffin Foraminifera* Ice Sheet Lancaster Sound Nares strait Neogloboquadrina pachyderma Parry Channel Sea ice Arctic Data Center (via DataONE) Arctic Baffin Bay Lancaster Sound ENVELOPE(-83.999,-83.999,74.218,74.218) Nares ENVELOPE(158.167,158.167,-81.450,-81.450) Parry ENVELOPE(-62.417,-62.417,-64.283,-64.283) ENVELOPE(-86.0,-62.0,75.0,72.0) |