Further Attempts at Dating the Palynological Sequence of the Hula L07 Core, Upper Jordan Valley, Israel

The palynological sequence of the Hula L07 core was previously correlated with the global oxygen isotope stages 3–5, based on a radiocarbon age determination and comparison with other Levantine paleoclimatological curves. An attempt was made to validate this correlation with Th/U dating. Unlike typical European peat, which is acidic, the soil pH of the Hula peat is mildly basic. Not only does this contribute to the oxidation of palynomorphs, but it also helps to preserve the carbonate material that can be a variable mixture of allogenic, endogenic, and authigenic components. Each component may represent a different degree of uranium series disequilibrium. The thorium ( 232 Th) concentrations of the carbonate are low. Total digestion or acid leach of the sample may not always enable the proper correction for initial thorium. The dating derived from a NaOH-extraction of the organic material, while giving apparently better ages, also suffers from the presence of the carbonate admixture. It appears that, while 14 C dating can be considered suitable for the younger portions of the core, techniques based upon the U-series may not be as efficacious in dating this important record of climatic change

Absolute dating · Archaeology · Authigenic · Carbonate · Geochemistry · Geography · Mineralogy · Palynology · Peat · Pollen · Protactinium · Radiocarbon dating · Radiometric dating · Sedimentary rock · Thorium · Uranium · Chemistry · Geological formations and processes · Geology and Paleoclimatology Research · Isotope Analysis in Ecology · Geology · Paleontology

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  Open Access•Shimon Moshkovitz, Mordeckai Magaritz•Quaternary Research•1987

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  Open Access•D J Huntley, D I GODFREY‐SMITH et al.•Nature•1985

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• The Waters of Merom

  Canon Gover•Palestine Exploration Quarterly•1890

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• Absolute Age Determination of Archaeological Sites by Uranium Series Dating of Travertines

  Open Access•H P Schwarcz•Archaeometry•1980

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• The Paleoecology of the Early Wurm in the Hula Basin, Israel

  Mina Weinstein-Evron•Paléorient•1983

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