| SPELEOTHEMS |
Genty et al. 2003 Villars Cave, France Speleothem Stable Isotope Data
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Genty, D.;Blamart, D.;Ouahdi, R.;Gilmour, M.;Baker, A.;Jouzel, J.;Van-Exter, S. 2003 Precise dating of Dansgaard-Oeschger
climate oscillations in western Europe from stalagmite data Nature Vol. 421, pp. 833 - 837, 20 February 2003
| Data Coverage |
North: 45.3 * South: 45.3 |
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West: .5 * East: .5 |
Start Year: -81132 AD
End Year: -29810 AD
Data: Please Cite Data Contributors!
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Summary: 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. But the effects of such events in
continental settings are not as clear, and their absolute chronology
is uncertain beyond the limit of 14C 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 234U/230Th 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, and deep-sea records, 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 ±0.6 and
67.4 ±0.9 kyr ago.
More Info on Speleothems |
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Complete XML Record: noaa-cave-5424
(Last Revised: 2007-10-18 )
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