oa Madoqua - Stable isotope characterization of calcrete, lake marl and stromatolites in the Etosha region, Namibia
|Article Title||Stable isotope characterization of calcrete, lake marl and stromatolites in the Etosha region, Namibia|
|© Publisher:||Namibian Ministry of Environment and Tourism|
|Affiliations||1 *Environmentek, CSIR, Pretoria. **Institut fur Geographie, LM Universitat, Munchen, Germany|
|Publication Date||Jan 1997|
|Pages||75 - 80|
|Keyword(s)||Carbon dioxide from plants, Carbonate formation, Environmental conditions, Fractionation factors, Grassy plants, High water evaporation, Isotope equilibrium, Isotope ratios, Isotopic analysis, Lake maris, Morphdynamic stability, O levels in water, Organic material, Pedogenic calcretes and Stromatolites|
Surface carbonate occurrences from the Etosha Pan and its surrounding areas have been classified as pedogenic calcrete, evaporitic calcrete, chalks, stromatolites or sinter. The classification was based on field evidence and profile-morphologic criteria, supplemented by laboratory analysis. Stable isotope analysis of the samples collected from these occurrences show a good relation between 13 C and 18 O for all types of samples. The different types show a clear separation of isotope values.
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