The Open UniversitySkip to content
 

Precise dating of Dansgaard-Oeschger climate oscillations in western Europe from stalagmite data

Genty, D.; Blamart, D.; Ouahdi, R.; Gilmour, M.; Baker, A.; Jouzel, J. and Van-Exter, S. (2003). Precise dating of Dansgaard-Oeschger climate oscillations in western Europe from stalagmite data. Nature, 421(6925) pp. 833–837.

DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1038/nature01391
Google Scholar: Look up in Google Scholar

Abstract

The signature of Dansgaard-Oeschger events-millennial-scale abrupt climate oscillations during the last glacial period-is well established in ice cores and marine records(1-3). But the effects of such events in continental settings are not as clear, and their absolute chronology is uncertain beyond the limit of C-14 dating and annual layer counting for marine records and ice cores, respectively. Here we present carbon and oxygen isotope records from a stalagmite collected in southwest France which have been precisely dated using U-234/Th-230 ratios. We find rapid climate oscillations coincident with the established Dansgaard-Oeschger events between 83,000 and 32,000 years ago in both isotope records. The oxygen isotope signature is similar to a record from Soreq cave, Israel(4), and deep-sea records(5,6), indicating the large spatial scale of the climate oscillations. The signal in the carbon isotopes gives evidence of drastic and rapid vegetation changes in western Europe, an important site in human cultural evolution. We also find evidence for a long phase of extremely cold climate in southwest France between 61.2 6 +/- 0.6 and 67.4 +/- 0.9 kyr ago.

Item Type: Journal Article
ISSN: 0028-0836
Keywords: LAST GLACIAL PERIOD; GREENLAND ICE-CORE; OXYGEN-ISOTOPE; SPELEOTHEMS; CAVE; RECORDS; PAST; TEMPERATURE; INSTABILITY; ANTARCTICA
Academic Unit/Department: Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 8204
Depositing User: Astrid Peterkin
Date Deposited: 05 Jul 2007
Last Modified: 02 Dec 2010 20:00
URI: http://oro.open.ac.uk/id/eprint/8204
Share this page:

Actions (login may be required)

View Item
Report issue / request change

Policies | Disclaimer

© The Open University   + 44 (0)870 333 4340   general-enquiries@open.ac.uk