Was Scotland deglaciated during the Younger Dryas?

QUATERNARY SCIENCE REVIEWS

卷:145

Article

Small, David¹  Fabel, Derek² 

[1] Univ Glasgow, Dept Geog & Geosci, Glasgow G12 8QQ, Lanark, Scotland

[2] Scottish Univ, SUERC AMS Lab, Environm Res Ctr, E Kilbride G75 0QF, Lanark, Scotland

关键词: Surface exposure dating;    Scotland;    Younger Dryas;   

DOI  :  10.1016/j.quascirev.2016.05.031

来源: Elsevier

【 摘 要 】

Recent work has produced data that challenges the canonical view that the Younger Dryas (c.12.9 -11.71 a) was a time of glacier expansion across the North Atlantic. Boulders on moraines located within the inner sector of the Scottish Loch Lomond Stadial (approximate to Younger Dryas) ice cap yield cosmogenic exposure ages 12.8-11.3 ka with a best estimate moraine age of 11.5 +/- 0.6 ka. This age contradicts the interpretation that Scotland was completely deglaciated as early as 12,580 cal yr BP and no later than 12,200 cal yr BP. Our data supports the previously accepted scenario, supported by a wide variety of data, that final deglaciation of Scotland did not occur until late in the Loch Lomond Stadial or the early Holocene. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

Free