Be-10 ages from central east Greenland constrain the extent of the Greenland ice sheet during the Last Glacial Maximum
2007 (English)In: Quaternary Science Reviews, ISSN 0277-3791, Vol. 26, no 19-21, 2316-2321 p.Article in journal (Refereed) Published
Traditional ice sheet reconstructions have suggested two distinctly different ice sheet regimes along the East Greenland continental margin during the Last Glacial Maximum (LGM): ice to the shelf break south of Scoresby Sund and ice extending no further than to the inner shelf at and north of Scoresby Sund. We report new Be-10 ages from erratic boulders perched at 250 m a.s.l. on the Kap Brewster peninsula at the mouth of Scoresby Sund. The average Be-10 ages, calculated with an assumed maximum erosion rate of 1 cm/ka and no erosion (respectively, 17.3 +/- 2.3 ka and 15.1 +/- 1.7 ka) overlap with a period of increased sediment input to the Scoresby Sund fan (19-15 ka). The results presented here suggest that ice reached at least 250 m a.s.l. at the mouth of Scoresby Sund during the LGM and add to a growing body of evidence indicating that LGM ice extended onto the outer shelf in northeast Greenland.
Place, publisher, year, edition, pages
2007. Vol. 26, no 19-21, 2316-2321 p.
IdentifiersURN: urn:nbn:se:su:diva-55261DOI: 10.1016/j.quascirev.2007.08.001ISI: 000251922000002OAI: oai:DiVA.org:su-55261DiVA: diva2:402803
authorCount :52011-03-092011-03-072012-12-07Bibliographically approved