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ESR and Th-230/U-234 dating of speleothems from Aladaglar Mountain Range (AMR) in Turkey

Ulusoy, Ulku; Anbar, Gul; Bayari, Serdar; Uysal, Tonguc


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        "affiliation": "Hacettepe Univ, Dept Engn Phys, TR-06800 Ankara, Turkey", 
        "name": "Ulusoy, Ulku"
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      {
        "affiliation": "Hacettepe Univ, Dept Engn Phys, TR-06800 Ankara, Turkey", 
        "name": "Anbar, Gul"
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      {
        "affiliation": "Hacettepe Univ, Dept Geol Engn, TR-06800 Ankara, Turkey", 
        "name": "Bayari, Serdar"
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        "name": "Uysal, Tonguc"
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    "description": "Electron spin resonance (ESR) and Th-230/U-234 ages of speleothem samples collected from karstic caves located around 3000 m elevation in the Aladaglar Mountain Range (AMR), south-central Turkey, were determined in order to provide new insight and information regarding late Pleistocene climate. ESR ages were validated with the Th-230/U-234 ages of test samples. The ESR ages of 21 different layers of six speleothem samples were found to range mostly between about 59 and 4 ka, which cover the Marine Oxygen Isotope Stages (MIS) MIS 3 to MIS 1. Among all, only six layers appear to have deposited during MIS 8 and 5. Most of the samples dated were deposited during the late glacial stage (MIS 2). It appears that a cooler climate with a perennial and steady recharge was more conducive to speleothem development rather than a warmer climate with seasonal recharge in the AMR during the late Quaternary. This argument supports previous findings that suggest a two -fold increase in last glacial maximum mean precipitation in Turkey with respect to the present value. (c) 2013 University of Washington. Published by Elsevier Inc. All rights reserved.", 
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      "issue": "2", 
      "pages": "367-380", 
      "title": "QUATERNARY RESEARCH", 
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