The Late Weichselian glacial maximum in western Svalbard

Mangerud, Jan; Bolstad, Magne; Elgersma, Anne; Helliksen, Dag; Landvik, Jon Y.; Lycke, Anne Katrine; Lønne, Ida; Salvigsen, Otto; Sandahl, Tom; Sejrup, Hans Petter

doi:10.3402/polar.v5i3.6886

Cited by 18 publications

(22 citation statements)

References 11 publications

(7 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Later on, Mangerud et al. (2006) dated boulders in the glacial troughs of the Polar Urals using the cosmogenic isotope 10 Be, and found that values around 20 Ky are confined to moraines not further than 1 km distal from a present‐day glacier.…”

Section: Post‐queen Resultsmentioning

confidence: 99%

Geographical extremes in the glacial history of northern Eurasia: post-QUEEN considerations

Astakhov

2008

Polar Research

View full text Add to dashboard Cite

This paper summarizes the principal results produced by the European Science Foundation's programme, Quaternary Environment of the Eurasian North (QUEEN). These results concern the distribution of late Quaternary glaciers of different ages across northern Eurasia. The pattern of glaciation is compared with the west–east climatic gradient of the continent. Of particular significance is the coincidence of the Late Weichselian ice margin with the modern 30°C difference between the July and January mean air temperatures. The difference between west and east in the annual amplitude of air temperature did not decrease during the Pleniglacial. The asymmetry of the glacial history suggests a progressive aridification of the Eurasian North, with the result that by marine isotope stage 2 significant ice volumes could only accumulate along the Atlantic seaboard. The different climatic signals of thermochrons and cryochrons of the extreme west and east of the continent are discussed. The growth of continentality eastwards restrains the applicability of pollen proxies for climatic reconstructions.

show abstract

Section: Post‐queen Resultsmentioning

confidence: 99%

Geographical extremes in the glacial history of northern Eurasia: post-QUEEN considerations

Astakhov

2008

Polar Research

View full text Add to dashboard Cite

show abstract

“…The reconstruction does not explain how ice could have flowed onto the shelf without filling the inner part of Cumberland Sound, and overriding the "Early Foxe" deposits. Perhaps an ice shelf extended from the northeastern part of the margin and protected that area or, conversely perhaps the ice flowed over these deposits without destroying them as has been observed at Loks Land (Miller and Kaufman, 1990) and on Spitsbergen (Mangerud et al, 1987). The ice margins drawn within Cumberland Sound (Fig.…”

Section: A Model Of Deglaciation and Ice Extentmentioning

confidence: 90%

The Quaternary History of Cumberland Sound, Southeastern Baffin Island: The Marine Evidence

Jennings¹

2007

gpq

View full text Add to dashboard Cite

ABSTRACTAcoustic and core data from Cumberland Sound show that glacial ice derived from the Foxe Sector (Amadjuak Dome) of the Laurentide Ice Sheet advanced to the continental shelf at the mouth of the sound during a late phase of the Foxe Glaciation. The basal lithofacies/acoustic unit (Ai/BUD) in the sound is a massive, black diamicton. On the basis of strati-graphic, acoustic, lithologie and faunal evidence, this unit is interpreted as till. The till is overlain by an ice proximal to ice distal glacial-marine sediment sequence termed the Davis Strait Silt (DSS). The influence of ice retreat is reflected in the foraminiferal assemblages of the DSS. Rapid sedimentation rates in the sound prevailed during deposition of the DSS as shown by the conformable geometry of the DSS. Accelerator Mass Spectrometry dates on molluscs and foraminifera and a single conventional 14C date on disseminated organic material from ice proximal sediment of the DSS (lithofacies B and lower lithofacies C) indicate that the ice retreated rapidly from its probable maximum position on the shelf no earlier than ca. 13,400 BP and into the fiords along the coast of the sound by ca. 8900 BP. Deposition of ice-distal glacial marine sediments (lower lithofacies D) continued in the sound until ca. 7600 BP as the ice margin rapidly retreated into the fiords. Between ca. 8900 BP and ca. 8000 BP, the foraminiferal fauna show that the influence of glacial ice is remote and that "Atlantic Water" impinges on the seafloor. Postglacial sedimentation began in the sound at ca. 7600 BP. Retreat of the ice margin onto land made the fiord basins available as sediment catchments. The reduced sedimentation rates in the sound during this interval are indicated by the change to onlapping basin fill geometry of the Tiniktartuq Silt and Clay (TS&C). Calcareous foraminifera disappear from the sediments by ca. 6300 BP and are replaced by agglutinated foraminifera reflecting "Arctic Water" conditions at the seafloor. The TS&C is presently being deposited in the sound.

show abstract

“…Shell collection WB-167-66 from the surface of the moraine was used for age determinations GSC-1948, Ua-345, Ua-672, Ua-905 andUa-1058 (Table 1). Photograph 32-10 by W. Blake, Jr., August 23, 1966. 18 000 BP, a number of 'old' shells or shell fragments, such as that used for Ua-345, must have been mixed with shells of Holocene age, just as Mangerud et al (1987) report for a site in western Spitsbergen.…”

Section: S0re Franklinbreenmentioning

confidence: 94%

Radiocarbon Dating by Accelerator Mass Spectrometry; A Contribution to the Chronology of Holocene Events in Nordaustlandet, Svalbard

Blake¹

1989

Geografiska Annaler. Series A, Physical Geography

View full text Add to dashboard Cite

The Late Weichselian glacial maximum in western Svalbard

Cited by 18 publications

References 11 publications

Geographical extremes in the glacial history of northern Eurasia: post-QUEEN considerations

Geographical extremes in the glacial history of northern Eurasia: post-QUEEN considerations

The Quaternary History of Cumberland Sound, Southeastern Baffin Island: The Marine Evidence

Radiocarbon Dating by Accelerator Mass Spectrometry; A Contribution to the Chronology of Holocene Events in Nordaustlandet, Svalbard

Contact Info

Product

Resources

About