Continental Oxygen Isotopic Record of the Last 170,000 Years in Jerusalem |
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Authors: | Amos Frumkin Derek C Ford Henry P Schwarcz |
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Institution: | a Cave Research Center, Department of Geography, The Hebrew University of Jerusalem, Jerusalem, 91905, Israel;b School of Geology and Geography, McMaster University, Hamilton, Ontario, L8S 4K1, Canada |
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Abstract: | A long radiometrically dated oxygen isotopic record of continental climatic variations since the penultimate glaciation was obtained from a stalagmite deposited in a sealed cave in Jerusalem. This record shows that speleothems have the potential of assigning dates to long- and short-term climatic events, with possible refining of Milankovitch tuning of ice and marine records which themselves are not datable. Short-term ( 1000-yr) events are very significant in the region, reaching 50% of glacial/interglacial fluctuations. The Mediterranean Sea was the most probable source of local precipitation throughout the last glacial cycle. |
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Keywords: | speleothem cave karst stable isotopes last glacial cycle east Mediterranean paleoclimate TIMS dating |
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