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Temporal Changes in Radiocarbon Reservoir Age in the Dead Sea-Lake Lisan System

Published online by Cambridge University Press:  18 July 2016

Mordechai Stein ,
Claudia Migowski ,
Revital Bookman  and
Boaz Lazar
Mordechai Stein
Affiliation:
Geological Survey of Israel 30 Malkhe Yisrael Street, Jerusalem 95501, Israel. Corresponding author. Email: motis@vms.huji.ac.il
Claudia Migowski
Affiliation:
GeoForschungsZentrum Potsdam, Sec. 3.3 Climate Dynamics and Sediments, Telegrafenberg, D-14473 Potsdam, Germany
Revital Bookman
Affiliation:
Institute of Earth Sciences, The Hebrew University of Jerusalem, Givat Ram, Jerusalem 91904, Israel
Boaz Lazar
Affiliation:
Institute of Earth Sciences, The Hebrew University of Jerusalem, Givat Ram, Jerusalem 91904, Israel
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Abstract

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The Holocene Dead Sea and the late Pleistocene Lake Lisan were characterized by varying radiocarbon reservoir ages ranging between 6 and 2 ka in the Dead Sea and between 2 ka and zero in Lake Lisan. These changes reflect the hydrological conditions in the drainage system as well as residence time of 14C in the mixed surface layer of the lake and its lower brine. Long-term isolation of the lower brine led to 14C decay and an increase in the reservoir age. Yet, enhanced runoff input with atmospheric 14C brings the reservoir age down. The highest reservoir age of 6 ka was recorded after the sharp fall of the Dead Sea at ~8.1 ka cal BP. The lower reservoir age of zero was recorded between 36 and 32 ka cal BP, when the Lake Lisan mixed layer was frequently replenished by runoff.

Type
Part II
Information
Radiocarbon , Volume 46 , Issue 2: Proceedings of the 18th International Radiocarbon Conference (Part 2 of 2), Conference Editors: Nancy Beavan Athfield, Rodger J Sparks , 2004 , pp. 649 - 655
Copyright
Copyright © The Arizona Board of Regents on behalf of the University of Arizona 

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