Climate dynamics during the penultimate glacial period recorded in a speleothem from Kanaan Cave, Lebanon (central Levant).
In: Quaternary Research, Jg. 90 (2018-07-01), Heft 1, S. 10-25
academicJournal
Zugriff:
Little is known about terrestrial climate dynamics in the Levant during the penultimate interglacial-glacial period. To decipher the palaeoclimatic history of the Marine Oxygen Isotope Stage (MIS) 6 glacial period, a well-dated stalagmite (~194 to ~154 ka) from Kanaan Cave on the Mediterranean coast in Lebanon was analyzed for its petrography, growth history, and stable isotope geochemistry. A resolved climate record has been recovered from this precisely U–Th dated speleothem, spanning the late MIS 7 and early MIS 6 at low resolution and the mid–MIS 6 at higher resolution. The stalagmite grew discontinuously from ~194 to ~163 ka. More consistent growth and higher growth rates between ~163 and ~154 ka are most probably linked to increased water recharge and thus more humid conditions. More distinct layering in the upper part of the speleothem suggests strong seasonality from ~163 ka to ~154 ka. Short-term oxygen and carbon isotope excursions were found between ~155 and ~163 ka. The inferred Kanaan Cave humid intervals during the mid–MIS 6 follow variations of pollen records in the Mediterranean basins and correlate well with the synthetic Greenland record and East Asian summer monsoon interstadial periods, indicating short warm/wet periods similar to the Dansgaard-Oeschger events during MIS 4–3 in the eastern Mediterranean region. [ABSTRACT FROM AUTHOR]
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Titel: |
Climate dynamics during the penultimate glacial period recorded in a speleothem from Kanaan Cave, Lebanon (central Levant).
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Autor/in / Beteiligte Person: | Nehme, Carole ; Verheyden, Sophie ; Breitenbach, Sebastian F.m. ; Gillikin, David P. ; Verheyden, Anouk ; Cheng, Hai ; Edwards, R. Lawrence ; Hellstrom, John ; Noble, Stephen R. ; Farrant, Andrew R. ; Sahy, Diana ; Goovaerts, Thomas ; Salem, Ghada ; Claeys, Philippe |
Zeitschrift: | Quaternary Research, Jg. 90 (2018-07-01), Heft 1, S. 10-25 |
Veröffentlichung: | 2018 |
Medientyp: | academicJournal |
ISSN: | 0033-5894 (print) |
DOI: | 10.1017/qua.2018.18 |
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