Late Quaternary palaeohydrology of the Konya Basin, Turkey, based on isotope studies of modern hydrology and lacustrine carbonates |
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Authors: | Melanie J Leng Neil Roberts Jane M Reed Hilary J Sloane |
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Institution: | (1) NERC Isotope Geosciences Laboratory, Keyworth, Nottingham, BG12 5GG, UK;(2) Department of Geography, Loughborough University, Loughborough, LE11 3TU, UK |
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Abstract: | The Konya plain in south central Anatolia, Turkey, which is now largely dry, was occupied around the time of the Last Glacial Maximum by a fresh-oligosaline lake covering more than 4000 km2. Sediment cores from three residual water bodies (Pinarbai, Akgöl and Süleymanhaci) within the larger Pleistocene lake basin, have been analysed using a multidisciplinary approach. The sediment sequences are dated as spanning the last 50 Ka years, although breaks in sedimentation mean that there is only partial chronological overlap between them. Carbon and oxygen isotope analyses on lacustrine carbonate from the three cores give contrasting isotope profiles which reflect the different ages and independent hydrological behaviour of different sub-basins through the late Quaternary. Distinguishing changes that are regional from local effects is aided by modern isotope hydrology studies and by comparing the carbonate 13C and 18O values to diatom and other analyses undertaken on the same cores. |
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Keywords: | stable isotopes authigenic carbonate ostracods palaeolimnology Konya Basin Turkey |
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