Lake sediments as continental δ18O records from the glacial/post-glacial transition

Siegenthaler, U.; Eicher, U.; Oeschger, H.; Dansgaard, W. (1984). Lake sediments as continental δ18O records from the glacial/post-glacial transition. Annals of glaciology, 5, pp. 149-152. International Glaciological Society 10.3189/1984AoG5-1-149-152

Text lake-sediments-as-continental-18o-records-from-the-glacialpost-glacial-transition.pdf - Published Version Restricted to registered users only Available under License Publisher holds Copyright. Download (3MB) | Request a copy

As in polar ice, 18O variations of precipitation are recorded in carbonate sediments formed in lakes (lake marl). We have analyzed many late-glacial profiles from Europe, There are strong l8O variations which coincide with well-known pollen zone boundaries and which indicate that abrupt, drastic climatic changes occurred in the late glacial period. These events are a major warming around 13 ka BP (pollen zone boundary Oldest Dryas/Bölling) and a marked cold phase between about 10.8 and 10 ka BP (Younger Dryas). Comparison of the δ18O records of European lake sediments and of Greenland ice cores reveal a striking similarity which indicates that climatic changes in the late glacial and early postglacial were parallel in Greenland and in Europe. First results from North American lake-sediment profiles do not exhibit similar δ18O variations. This pattern of climatic changes was probably caused by retreating and readvancing polar water in the high-latitude North Atlantic Ocean, as discussed by Ruddiman and McIntyre (1981).

Interest & Impact

Downloads

1 since deposited on 14 Oct 2021
0 in the past 12 months

Citations

5 Citations in Web of Science ®
6 Citations in Scopus

Search

in Google Scholar™

Services

Actions (login required)

Edit item

Actions (login required)

Edit item