Rapid climatic shifts in southern Greece during Marine Isotope Stages 5a-3
(English)In: Palaeogeography, Palaeoclimatology, Palaeoecology, ISSN 0031-0182, E-ISSN 1872-616XArticle in journal (Refereed) Submitted
We present a speleothem based stable isotope (δ13C, δ18O) record from southern Greece covering a period from 79±5.8 ka to 37±3 ka, i.e. the end of Marine Isotope Stage (MIS) 5a and large parts of MIS 4 and MIS 3. The record from Glyfada Cave provides a U-Th dated proxy paleoclimate record from Greece, covering this time period, and shows that the climate over the Peloponnese rapidly responded to interstadial and stadial conditions over Greenland. During stadial (interstadial) conditions colder (warmer) and drier (wetter) conditions are reflected by depleted (enriched) δ13C-values in the speleothems from Glyfada Cave. Depositional hiatuses in Glyfada Cave correspond to periods of severe cold conditions in the northern Hemisphere and reduced precipitation over the Peloponnese most likely due to a southward displacement of Mediterranean cyclone tracks due to expanding northern ice sheets and increased snow cover over the European continent. By comparing our independently dated record with previously published pollen studies from Greece a time lag between the records from Ioannina and Megali Limni and Glyfada is evident. The match in time between the Glyfada speleothem record and the Tenaghi Philippon pollen record, when tuned to NGRIP, is rather precise.
Paleoclimate, Speleothems, Stable isotopes, Dansgaard-Oeschger cycles, Eastern Mediterranean, Peloponnese, Southern Greece
IdentifiersURN: urn:nbn:se:su:diva-108042OAI: oai:DiVA.org:su-108042DiVA: diva2:753349