Stratigraphy and palaeoecology of a possible interglacial site, northernmost Ellesmere Island, Canada

Evans, David J. A.; Mott, R J

doi:10.1002/jqs.3390080306

Cited by 3 publications

(1 citation statement)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Interglacial or interstadial sediments on Ellesmere Island further imply that multiple glacial advances occurred (cf. Blake and Matthews 1979;Völk 1980;King 1981;Hodgson 1985;Evans and Mott 1993;Bednarski 1995) but with no information on the relative extent of successive advances.…”

Section: Previous Quaternary Studiesmentioning

confidence: 98%

Quaternary history of Axel Heiberg Island bordering Nansen Sound, Northwest Territories, emphasizing the last glacial maximum

Bednarski¹

1998

Can. J. Earth Sci.

View full text Add to dashboard Cite

The landscape of northeastern Axel Heiberg Island records an erosional history since the Neogene, whereas the glacial and sea-level history relate to Late Wisconsinan glaciation. During the last glacial maximum northeastern Axel Heiberg Island was covered by glaciers emanating from local and regional sources. Local ice caps expanded from highlands on Axel Heiberg Island across the coastal slope. A trunk glacier flowed northward out of Eureka and Flat sounds into Nansen Sound and reached northernmost Axel Heiberg Island. Radiocarbon ages on marine shells suggest that the last glacial maximum was attained along the coast after 29 ka BP and extensive deglaciation was taking place by 10.3 ka BP. The postglacial marine limit rises continuously from 78 m above sea level near the entrance to Nansen Sound to 158 m above sea level at the mouth of Eureka Sound, showing greatest glacioisostatic loading to the south.Résumé : Le paysage du nord-est de l'île Axel Heiberg témoigne de l'histoire de l'érosion depuis le Néogène, tandis que l'histoire glaciaire et du niveau marin est liée à la glaciation du Wisconsinien tardif. Durant le dernier maximum glaciaire, l'île Axel Heiberg était recouverte par des glaciers issus de sources régionale et locale. Les calottes glaciaires d'origine locale se sont étendues des hautes terres sur l'île Axel Heiberg à travers le talus littoral. Un glacier principal qui progressait vers le nord hors des détroits d'Eureka et de Flat a pénétré dans le détroit de Nansen jusqu'à l'extrémité nord de l'île Axel Heiberg. Les âges au radiocarbone sur coquilles marines suggèrent que le dernier maximum glaciaire fut atteint le long du littoral postérieurement à 29 ka avant le Présent, et qu'une déglaciation étendue a pris place il y a 10,3 ka avant le Présent. La limite marine postglaciaire a monté de manière continue, de 78 m au-dessus du niveau marin près de l'entrée du détroit de Nansen à 158 m au-dessus du niveau marin à l'embouchure du détroit d'Eureka, indiquant une plus grande surcharge glaciostatique au sud. [Traduit par la rédaction]

show abstract

Section: Previous Quaternary Studiesmentioning

confidence: 98%

Quaternary history of Axel Heiberg Island bordering Nansen Sound, Northwest Territories, emphasizing the last glacial maximum

Bednarski¹

1998

Can. J. Earth Sci.

View full text Add to dashboard Cite

show abstract

Last Interglacial Arctic warmth confirms polar amplification of climate change

Anderson

Bennike

Bigelow

et al. 2006

Quaternary Science Reviews

216

View full text Add to dashboard Cite

Glacial advances and stratigraphy in Otto Fiord and adjacent areas, Ellesmere Island, Northwest Territories

Bednarski¹

1995

Can. J. Earth Sci.

View full text Add to dashboard Cite

Hvitland and Svartfjeld peninsulas have been glaciated at least two or three times since the Late Pliocene. The earliest recognized glaciation is constrained by amino acid ratios on in situ pelecypods from marine sediments stratigraphically overlying till in Otto Fiord. High amino acid ratios suggest that the shells may be Pliocene and related to recently discovered Late Pliocene Hvitland beds at White Point. The same samples yielded finite radiocarbon ages in the 30.2–34.8 ka BP range, which cautions against their acceptance. A second, mid Quaternary glaciation is suggested by intermediate amino acid ratios from in situ pelecypods and shell-bearing till covering coastal uplands along Nansen Sound. During the last glaciation the peninsula was covered by coalesced ice caps, with glacial tongues descending tributary valleys and extending into the fiords. Deglaciation of a tributary valley in outer Otto Fiord proceeded before 11.6 ka BP and before 9.1 ka BP in mid Otto Fiord, but major ice margins remained at the coast until 8–8.5 ka BP. Lateral meltwater channels record systematic ice retreat up tributary valleys into the interior of the peninsulas. The highest recognized marine limits are marked by prominent deltas at least 164 m asl on western Hvitland Peninsula. The marine limit declines eastward inside Otto, Jugeborg, and Hare fiords. The highest strandlines could not be dated; however, by ~8.3 ka BP relative sea level stood at 103 m asl.

show abstract

Stratigraphy and palaeoecology of a possible interglacial site, northernmost Ellesmere Island, Canada

Cited by 3 publications

References 34 publications

Quaternary history of Axel Heiberg Island bordering Nansen Sound, Northwest Territories, emphasizing the last glacial maximum

Quaternary history of Axel Heiberg Island bordering Nansen Sound, Northwest Territories, emphasizing the last glacial maximum

Last Interglacial Arctic warmth confirms polar amplification of climate change

Glacial advances and stratigraphy in Otto Fiord and adjacent areas, Ellesmere Island, Northwest Territories

Contact Info

Product

Resources

About