Dissolved Gas Paleotemperatures and 18O Variations Derived from Groundwater Near Uitenhage, South Africa
- 20 January 1986
- journal article
- Published by Cambridge University Press (CUP) in Quaternary Research
- Vol. 25 (1), 79-88
- https://doi.org/10.1016/0033-5894(86)90045-1
Abstract
Under the near-ideal hydrologic conditions provided by the Uitenhage artesian aquifer, reliable estimates of paleotemperatures were obtained by measurement of the dissolved N2 and Ar in groundwater, confidently dated in the range 28,000 yr B.P. to the present using 14C. The mean annual air temperature in this area during the last glaciation is calculated to have been, on average, 1/2°C lower than during the Holocene. The change in the 18O/16O ratio of the groundwater, corrected for changes in ocean water, amounted to 0.4‰ per °C.Keywords
This publication has 28 references indexed in Scilit:
- Dissolved ions, stable and radioactive isotopes and noble gases in thermal waters of South Africa — A commentJournal of Hydrology, 1984
- Origin and history of nitrate in confined groundwater in the western KalahariJournal of Hydrology, 1983
- Radiocarbon dating of groundwater of the aquifer confined in the Lower Triassic sandstones of the Lorraine region, FranceJournal of Hydrology, 1981
- “Excess air” in groundwaterJournal of Hydrology, 1981
- Gaseous nitrogen as evidence for denitrification in groundwaterJournal of Hydrology, 1981
- Inert gases in groundwater from the Bunter Sandstone of England as indicators of age and palaeoclimatic trendsJournal of Hydrology, 1979
- Palaeohydrology of Late Pleistocene Lake, Alexandersfontein, Kimberley, South AfricaNature, 1973
- Oxygen Isotope Profiles through the Antarctic and Greenland Ice SheetsNature, 1972
- Water-CO2 exchange set-up for the routine 18oxygen assay of natural watersThe International Journal of Applied Radiation and Isotopes, 1970
- Measurement of effective flow velocity of ground water by means of dissolved gasesAmerican Journal of Science, 1961