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Radiocarbon Evidence for Holocene Recharge of Groundwater, Western Desert, Egypt

Published online by Cambridge University Press:  18 July 2016

C Vance Haynes  and
Herbert Haas
C Vance Haynes
Affiliation:
Department of Geosciences, The University of Arizona, Tucson, Arizona 85721
Herbert Haas
Affiliation:
Department of Geological Sciences, Southern Methodist University, Dallas, Texas 75275
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Abstract

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During Pleistocene pluvial precipitation was sufficient for the maintenance of groundwater supported lakes and for the accumulation of playa lakes in wind-scoured depressions during the early Holocene pluvial. At places where ground water reaches near to the surface, wells (birs) have been dug and maintained in historic times. These birs have been used as sampling sites for water analyses, including carbon-14 levels, carbon and oxygen stable isotope ratios, tritium concentrations, and chemical data.

All the waters from birs analyzed to date produced apparent radiocarbon ages ranging from late historic to early Holocene, and tritium analyses on some of these indicate no recharge during the Atomic age.

Sources of error for the radiocarbon analyses, including exchange with atmospheric CO2, respiration by plant roots, and contact with carbonates of considerably older age, were evaluated. None of these factors have such an extreme impact on the measurements as to render the result invalid. Two trends revealed by these data are an increase in apparent age from northwest to southwest and with subsequent extractions at the same site where the hand-dug well was bailed out and sampled four times within two days.

We conclude that recharge of shallow ground water occurred in early Holocene time, and some recharge of deeper aquifers may have occurred where infiltration paths permitted. Some recharge occurred in late Holocene (post pluvial) time, but the net trend has been toward hyper-aridity that characterizes the area today.

Type
Quaternary
Information
Radiocarbon , Volume 22 , Issue 3: Heidelberg , 1980 , pp. 705 - 717
Copyright
Copyright © The American Journal of Science

References

Bagnold, R A, 1954, Physical aspects of dry deserts, in Clondsley-Thompson, J L, ed, Biology of deserts, p 7–12.Google Scholar
Ball, J, 1927, Problems of the Libyan Desert: Geog Jour, v 70, p 21–38, 105-128, 209-224.Google Scholar
Beadnell, H J L, 1931, Zerzura: Geog Jour, v 77, p 245–250.Google Scholar
Budge, E A W, 1907, The Egyptian Sudan: New York, J B Lippmcott Co., p 85.Google Scholar
Caton-Thompson, G and Gardner, E W, 1932, The prehistoric geography of Kharga Oasis: Geog Jour, v 80, no. 5, p 369–409.Google Scholar
Comyn, D, 1911, Service and sport in the Sudan: London, John Lane, p 289–316.Google Scholar
Dincer, T, Al-Mugrin, , and Zimmermann, V, 1974, Study of the infiltration and recharge through the sand dunes in arid zones with special reference to the stable isotopes and thermonuclear tritium: Jour Hydrology, v 23, p 79–109.Google Scholar
Ezzat, M A, 1974, Ground water series in the UAR, exploration of ground water in El Wadi El Gadid (New Valley) Project: Pt II, Hydrologie conditions, Dakhla-Kharga area: Cairo, Government Printing Offices, p 4.Google Scholar
Gleichen, Count, 1905, The Anglo-Egyptian Sudan, volume II: London, Harrison and Sons, p 191.Google Scholar
Haynes, C V, 1978, The Nubian Desert: A product of Quaternary climatic cycles, in Greeley R and Black, D, eds, Astracts for the planetary geology field conference on aeolian processes: NASA TM-78, v 455, p 22–23.Google Scholar
Haynes, C V in press, Geological evidence of pluvial climates in the El Nabta area of the Western Desert, Egypt, in Wendorf, F and Schild, R, eds, Prehistory of the Egyptian Sahara: New York, Academic Press, in press.Google Scholar
Haynes, C V, Mehringer, P Jr., and Zaghloul, S A, 1979, Pluvial lakes of Northwestern Sudan: Geog Jour, v 145, p 437–445.Google Scholar
Haynes, C V, Said, R, and El Hennawi, M, 1977, Quaternary lakes of the Nubian Desert: Paper presented at the 10th congress, INQUA, Birmingham.Google Scholar
Hellstrom, B, 1940, The subterranean water in the Libyan Desert: Sartryck Geog Annaler, nos. 3-4, Stockholm.Google Scholar
International Atomic Energy Agency, 1969, Environmental isotope data, no. 1: World survey of isotope concentrations in preparation (1953-1963): Tech rept ser no. 96, Vienna.Google Scholar
Issawi, B, 1971, Geology of Darb el Arbain, Western Desert, Egypt: Annals Geol Survey Egypt, v 1, p 53–92.Google Scholar
Klitzsch, E, Weistroffer, K, Sonntag, C, and El Shazly, E M, 1977, Fossil reserves of ground water in the central Sahara: Nat Resources and Development, v 5, p 19–45.Google Scholar
Knetsch, G, Shata, A, Degens, E, Münnich, K O, and Vogel, J C, 1962, Untersuchungen an grundwässern der ost-Sahara: Geol Rundschau, v 52, p 587–610.Google Scholar
Lloyd, J W and Farag, M H, 1978, Fossil groundwater gradients in arid regional sedimentary basins: Ground Water, v 16, no. 6, p 388–393.Google Scholar
Lyons, H G, 1908, Some unsolved problems of the Nile Basin: Cairo Sci Jour, March.Google Scholar
Myers, O H, 1939, The Sir Robert Mond expedition of the Egypt Exploration Society: Geog Jour, v 93, p 287–291.Google Scholar
Muller, A B, 1974, Essai d'application des variations de teneur en radiocarbone dissous a'l'etude des aguiferes libres: Le cas de la nappe phreatique au novel et a l'est du lac Tchad I: PhD thesis, Univ Paris VI.Google Scholar
Münnich, K O and Vogel, J C, 1962, Unterschungen on pluvian Wassern der ost Sahara: Geol Rundschau, v 52, p 611–624.Google Scholar
Murray, G W, 1952, Water beneath the Egyptian Western Desert: Geog Jour, v 118, p 443–452.Google Scholar
Nydal, Reidar and Lövseth, Knut, 1970, Prospective decrease in atmospheric radiocarbon: Jour Geophys Research, v 75, p 2271–2278.Google Scholar
Sandford, K S, 1935, Sources of water in the northwestern Sudan: Geog Jour, v 85, p 412–431.Google Scholar
Shaw, W B K, 1929, Darb el Arbain: The Forty Days Road: Sudan notes and records, v 12, p 63–71.Google Scholar
Street, F A and Grove, A T, 1976, Environmental and climatic implications of late Quaternary lake-level fluctuations in Africa: Nature, v 261, p 385–390.Google Scholar
Tamers, M A, 1967, Radiocarbon ages of ground water in an arid zone unconfined aquifer, in Stout, G E, ed, Isotope techniques in the hydrologic cycle: Am Geophys Union, Geophys mon ser, no. 11, p 143–152.Google Scholar
Wendorf, Fred, Close, A, Schild, R, Said, R, Haynes, C V, Gautier, A, and Hadidi, N, 1977, Late Pleistocene recent climatic changes in the Egyptian Sahara: Geog Jour, v 143, pt 2, p 211–234.Google Scholar
Wendorf, Fred, Schild, R, Said, R, Haynes, C V, Gautier, A, and Kobuseiwics, M, 1976, The prehistory of the Egyptian Sahara: Science, v 193, p 103–114.Google Scholar