Skip to main content
×
Home
    • Aa
    • Aa

Early to mid-Holocene Atlantic water influx and deglacial meltwater events, Beaufort Sea Slope, Arctic Ocean

Abstract

Holocene high-resolution cores from the margin of the Arctic Ocean are rare. Core P189AR-P45 collected in 405-m water depth on the Beaufort Sea slope, west of the Mackenzie River delta (70°33.03′N and 141°52.08′W), is in close vertical proximity to the present-day upper limit of modified Atlantic water. The 5.11-m core spans the interval between ∼6800 and 10,400 14C yr B.P. (with an 800-yr ocean reservoir correction). The sediment is primarily silty clay with an average grain-size of 9 φ. The chronology is constrained by seven radiocarbon dates. The rate of sediment accumulation averaged 1.35 mm/yr. Stable isotopic data (δ18O and δ13C) were obtained on the polar planktonic foraminifera Neogloboquadrina pachyderma (s) and the benthic infaunal species Cassidulina neoteretis. A distinct low-δ18O event is captured in both the benthic and planktonic data at ∼10,000 14C yr B.P.—probably recording the glacial Lake Agassiz outburst flood associated with the North Atlantic preboreal cold event. The benthic foraminifera are dominated in the earliest Holocene by C. neoteretis, a species associated with modified Atlantic water masses. This species decreases toward the core top with a marked environmental reversal occurring ∼7800 14C yr B.P. possibly coincident with the northern hemisphere 8200 cal yr B.P. cold event.

Copyright
Corresponding author
*Corresponding author. Fax: +1-303-492-6388.E-mail address: andrewsj@colorado.edu(J.T. Andrews).
Linked references
Hide All

This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

K. Aagaard , J.H. Swift , E.C. Carmack , (1985). Thermohaline circulation in the Arctic Mediterranean Seas. Journal of Geophysical Research. 90, 48334846.

J.T. Andrews , (2000). Icebergs and iceberg rafted detritus (IRD) in the North Atlantic: Facts and assumptions. Oceanography. 13, 100108.

J.T. Andrews , A.S. Dyke , K. Tedesco , J.W. White , (1993). Meltwater along the Arctic margin of the Laurentide ice sheet (8–12 ka): Stable isotopic evidence and implications for past salinity anomalies. Geology. 21, 881884.

D.C. Barber , A. Dyke , C. Hillaire-Marcel , A.E. Jennings , J.T. Andrews , M.W. Kerwin , G. Bilodeau , R. McNeely , J. Southon , M.D. Moorehead , J.-M. Gagnon , (1999). Forcing of the cold event of 8200 years ago by catastrophic drainage of Laurentide lakes. Nature. 400, 344348.

H.A. Bauch , H. Erlenkeuser , R.F. Spielhagen , U. Struck , M. Mattiessen , J. Thiede , J. Heinemeier , (2001). A multiproxy reconstruction of the evolution of deep and surface waters in the subarctic Nordic Seas over the last 30,000 yr. Quaternary Science Reviews. 20, 659678.

S. Bjorck , M. Rundgren , O. Ingolfsson , S. Funder , (1997). The preboreal oscillation around the Nordic Seas: Terrestrial and lacustrine responses. Journal of Quaternary Science. 12, 455465.

W.S. Broecker , (1997). Thermohaline circulation, the Achilles heel of our climate system: Will man-made CO2 upset the current balance?. Science. 278, 15821588.

C.D. Clark , C.R. Stokes , (2001). Extent and basal characteristics of the M'Clintock Channel ice stream. Quaternary International. 86, 81101.

D. Darby , J. Bischoff , G. Cutter , A. de Vernal , C. Hillaire-Marcel , G. Dwyer , J. McManus , L. Osterman , L. Polyak , R. Poore , (2001). New record shows pronounced changes in Arctic Ocean circulation. EOS 82, 601, 607.

R.R. Dickson , T.J. Osborn , J.W. Hurrell , J. Meincke , J. Blindheim , B. Adlandsvik , T. Vinje , G. Alekseev , W. Maslowski , (2000). The Arctic Ocean response to the North Atlantic oscillation. Journal of Climate. 13, 26712696.

J.-C. Duplessy , E. Ivanova , I. Murdmaa , M. Paterne , L. Labeyrie , (2001). Holocene paleoceanography of the northern Barents Sea and variations of the northward heat transport by the Atlantic Ocean. Boreas. 30, 216.

A.S. Dyke , J.T. Andrews , P.U. Clark , J.H. England , G.H. Miller , J. Shaw , J.J. Veillette , (2002). The Laurentide and Innuitian ice sheets during the Last Glacial Maximum. Quaternary Science Reviews. 21, 931.

A.S. Dyke , V.K. Prest , (1987a). Late Wisconsinan and Holocene history of the Laurentide ice sheet. Geographie Physique et Quaternaire. 41, 237263.

A.S. Dyke , J.M. Savelle , (2000). Major end moraines of Younger Dryas age on the Wollaston Peninsula, Victoria Island, Canadian Arctic: Implications for paleoclimate and for formation of hummocky moraine. Canadian Journal of Earth Sciences. 37, 601619.

R.G. Fairbanks , (1989). A 17,000-year glacio-eustatic sea level record: Influence of glacial melting rates on the Younger Dryas event and deep-ocean circulation. Nature. 342, 637642.

D.A. Fisher , R.M. Koerner , N. Reeh , (1995). Holocene climatic records from Agassiz Ice Cap, Ellesmere Island, NWT, Canada. The Holocene. 5, 1924.

T.G. Fisher , D.G. Smith , J.T. Andrews , (2002). Preboreal oscillation caused by a glacial Lake Agassiz flood. Quaternary Science Reviews. 21, 873878.

R.D. Frew , P.F. Dennis , K.J. Heywood , M.P. Meredith , S.M. Boswell , (2000). The oxygen isotope composition of water masses in the northern North Atlantic. Deep-Sea Research I. 47, 22652286.

M. Hald , S. Hagen , (1998). Early Preboreal cooling in the Nordic seas region triggered by meltwater. Geology. 26, 615618.

A.E. Jennings , G. Helgadottir , (1994). Foraminiferal assemblages from the fjords and shelf of Eastern Greenland. Journal Foraminiferal Research. 24, 123144.

A.E. Jennings , N.J. Weiner , (1996). Environmental change on eastern Greenland during the last 1300 years: Evidence from Foraminifera and Lithofacies in Nansen Fjord, 68°N. The Holocene. 6, 179191.

A.E. Jennings , W.F. Manley , B. MacLean , J.T. Andrews , (1998). Marine evidence for the last glacial advance across Eastern Hudson Strait, Eastern Canadian Arctic. Journal of Quaternary Science. 13, 501514.

A.E. Jennings , K. Gronvold , R. Hilberman , M. Smith , M. Hald , (2002). High resolution study of Icelandic tephras in the Kangerlussuaq Trough, SE East Greenland, during the last deglaciation. Journal of Quaternary Science. 17, 747757.

H.-P. Kleiber , J. Knies , F. Niessen , (2000). The late Weichselian glaciation of the Franz Victoria Trough, northern Barents Sea: Ice sheet extent and timing. Marine Geology. 168, 2544.

D.J. Lubinski , L. Polyak , S.L. Forman , (2001). Freshwater and atlantic water inflows to the deep northern Barents and Kara seas since ca. 13 14C ka: Foraminifera and stable isotopes. Quaternary Science Reviews. 20, 18511879.

A.C. Mix , A.F. Ruddiman , (1985). Structure and timing of the last deglaciation: Oxygen isotope evidence. Quaternary Science Reviews. 4, 59108.

W.R. Peltier , (1994). Ice Age paleotopography. Science. 265, 195201.

L. Polyak , V. Gataullin , O. Okuneva , V. Stelle , (2000). New constraints on the limits of the Barents–Kara ice sheet during the Last Glacial Maximum based on borehole stratigraphy from the Pechora Sea. Geology. 28, 611614.

T.L. Rasmussen , E. Thomsen , L. Labeyrie , T.C.E. van Weering , (1996). Circulation changes in the Faeroe–Shetland Channel correlating with cold events during the last glacial period (58–10 ka). Geology. 24, 937940.

B. Rudels , A.-M. Larsson , P.-I. Sehlstedt , (1991). Stratification and water mass formation in the Arctic Ocean: Some implications for nutrient distribution. Polar Research. 10, 1931.

B. Rudels , E.P. Jones , L.G. Anderson , G. Kattner , (1994). On the Intermediate depth waters of the Arctic Ocean. O.M. Johannessen , R.D. Muench , J.E. Overland , The Polar Oceans and Their Role in Shaping the Global Environment. American Geophysical Union, Washington, DC.

M.C. Serreze , J.A. Maslanik , R.G. Barry , T.L. Demaria , (1992). Winter atmospheric circulation in the Arctic basin and possible relationships to the Great Salinity Anomaly in the northern North Atlantic. Geophysical Research Letters. 19, 3 293296.

M.C. Serreze , J.E. Walsh , F.S.I. Chapin , T. Osterkamp , M. Dyurgerov , V. Romanovski , W.C. Oechel , J. Morison , T. Zhang , R.G. Barry , (2000). Observational evidence of recent change in the northern high-latitude environment. Climatic Change. 46, 159207.

R.F. Spielhagen , H. Erlenkeuser , (1994). Stable oxygen and carbon isotopes in planktonic foraminifers from Arctic Ocean surface sediments: Reflection of the low salinity surface water layer. Marine Geology. 119, 227250.

M. Stuiver , P.J. Reimer , E. Bard , J.W. Beck , K.A. Hughen , B. Kromer , F.G. McCormack , J. v.d. Plicht , M. Spurk , (1998). INTCAL98 radiocarbon age calibration 24,000–0 cal BP. Radiocarbon. 40, 10411083.

J.P.M. Syvitski , (1991). Principles, Methods, and Applications of Particle Size Analysis. Cambridge University Press, London.

J.T. Teller , D.W. Leverington , J.D. Mann , (2002). Freshwater outbursts to the oceans from glacial Lake Agassiz and their role in climate change during the last deglaciation. Quaternary Science Reviews. 21, 879888.

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Quaternary Research
  • ISSN: 0033-5894
  • EISSN: 1096-0287
  • URL: /core/journals/quaternary-research
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords:

Metrics

Abstract views

Total abstract views: 13 *
Loading metrics...

* Views captured on Cambridge Core between 20th January 2017 - 26th May 2017. This data will be updated every 24 hours.