Royal Institute of Natural science RBINS

Brussels, Belgium

Royal Institute of Natural science RBINS

Brussels, Belgium
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Nehme C.,Royal Institute of Natural science RBINS | Nehme C.,University of Savoy | Verheyden S.,Royal Institute of Natural science RBINS | Noble S.,British Geological Survey | And 2 more authors.
Geologica Belgica | Year: 2015

Lying at the transition between temperate Mediterranean domain and subtropical deserts, the Levant is a key area to study the palaeoclimatic response over glacial-interglacial cycles. This paper presents a dated last interglacial (MIS 5) stalagmite (129–84 ka) from the Kanaan Cave, Lebanon. Variations in growth rate, morphology and petrology have been measured to derive a palaeoclimatic record. The speleothem growth curve shows rapid growth rates during the peak of MIS 5e (126-124 ka), moderate growth rates between 103.5 and 99 ka and very low growth rates from 99 to 84 ka. On the basis of the good correlation between the speleothem morphology and growth rates with the isotopic response of continental records from northern and southern Levant, we relate high growth rate to wet conditions during the maximum MIS 5e and MIS 5c. The peak in growth rates corresponds to sapropel events in the eastern Mediterranean. Low growth rates during MIS 5d and 5b indicate a transition to drier conditions. © 2015, Geologica Belgica. All rights reserved.


Nehme C.,Royal Institute of Natural science RBINS | Nehme C.,Vrije Universiteit Brussel | Verheyden S.,Royal Institute of Natural science RBINS | Verheyden S.,Vrije Universiteit Brussel | And 6 more authors.
Climate of the Past | Year: 2015

Lying at the transition between the temperate Mediterranean domain and subtropical deserts, the Levant is a key area to study the palaeoclimatic response over glacial-interglacial cycles. This paper presents a precisely dated last interglacial (MIS 5) stalagmite (129-84 ka) from the Kanaan Cave, Lebanon. Variations in growth rate and isotopic records indicate a warm humid phase at the onset of the last interglacial at ∼ 129 ka that lasted until ∼ 125 ka. A gradual shift in speleothem isotopic composition (125-122 ka) is driven mainly by the δ18O source effect of the eastern Mediterranean surface waters during sapropel 5 (S5). The onset of glacial inception began after ∼ 122 ka, interrupted by a short wet pulse during the sapropel 4 (S4) event. Low growth rates and enriched oxygen and carbon values until ∼ 84 ka indicate a transition to drier conditions during Northern Hemisphere glaciation. © Author(s) 2015.

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