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Oxygen isotope measurements of mammoth and reindeer skeletal remains: an archive of Late Pleistocene environmental conditions in Eurasian Arctic |
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| Authors: | L Genoni P Iacumin V Nikolaev Yu Gribchenko A Longinelli |
| Institution: | a University of Trieste, Department of Geological, Environmental and Marine Sciences, Laboratory of Isotope Geochemistry, Via E. Weiss 6, 34127, Trieste, Italy b Institute of Geography, Russian Academy of Sciences, Department of Glaciology, 29 Staromonetny per., Moscow 109017, Russia c Institute of Geography, Russian Academy of Sciences, Laboratory of Evolutionary Geography, 29 Staromonetny per., Moscow 109017, Russia |
| Abstract: | 58 samples of fossil mammoth and reindeer teeth and bones of various ages and coming from different locations were studied for the oxygen isotopic composition of their phosphate. Samples from Siberia have interstadial (Marine Isotope Stage 3), stadial (MIS 2), late-glacial and post-glacial ages. Russian and Ukrainian samples refer to the late-glacial and transitional (between the interstadial and glacial stages) time. The δ18O of palaeoenvironmental waters were calculated from the δ18Op obtained from fossil samples by means of the isotope equations calibrated on modern specimens of elephants and deer respectively. The δ18Ow obtained are generally lighter than those measured nowadays in the same areas and not far from those measured on ice cores of Holocene age, the isotopic differences being not greater than a few δ units. The calculated values are also in fairly good agreement with some isotopic values obtained from Siberian permafrost samples. According to the results obtained it seems that the elephant and deer equations can be reasonably used respectively in the case of fossil mammoth and deer skeletons to evaluate environmental palaeowaters. |
| Keywords: | Eurasia Arctic region Pleistocene paleoenvironment oxygen isotopes mammals bones |
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