 |
| Titel |
Insights into the ‘super’-interglacial MIS 11 from a Central European flowstone |
| VerfasserIn |
David Schäfer, Nicole Vollweiler, Thomas Neumann, Tobias Kluge |
| Konferenz |
EGU General Assembly 2017
|
| Medientyp |
Artikel
|
| Sprache |
en
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250147958
|
| Publikation (Nr.) |
 EGU/EGU2017-12180.pdf |
|
|
|
|
|
| Zusammenfassung |
| Given the scenarios of the expected short- and medium-term future Earth climate under
anthropogenic influence the climate of past interglacials is of particular interest.
In the year 2100 the climate may resemble the conditions of MIS 11, one of the
warmest interglacials of the past million years. However, so far information on MIS 11
is sparse, comes mostly from marine or polar ice cores and has little continental
contribution.
In a cave system from southern Germany relatively large amounts of flowstone material
from this interesting time period was discovered which may help to close parts of the
knowledge gap. Preliminary results of this flowstone piece confirmed growth during most of
MIS 11 (ca. 420-390 ka) with estimated rates of 1-10 μm/a and showed successions of clear
and brownish layers that may enable proxy measurements with up to annual resolution. δ18O
and δ13C values obtained with coarse resolution (averaging of several 100 years) show
variations of less than 0.5 ‰ and are almost identical to Holocene calcite precipitated in the
same cave system. The large amount of available flowstone material of this time period and
region together with a sufficiently precise chronology (ICPMS U-Th measurements and layer
counting) could provide a better understanding of natural variability in future high-resolution
and multi-proxy studies. First results will be presented and next steps discussed. |
|
|
|
|
|
|