Geochemical behaviour of silica and magnesium during the evaporation of waters in Chad

Geochemical behaviour of silica and magnesium during the evaporation of waters in Chad

In the Lake Chad system, most of the strongly evaporated waters yield high concentrations in HCO 3CO 3 and Na, but very low concentrations in Ca and Mg. An experimental evaporation of the diluted original water has shown a Ca depletion due to calcite precipitation and a Mg depletion due to a Mg-sil...

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Veröffentlicht in:Chemical geology 1977-01, Vol.19 (1), p.215-228
Hauptverfasser: Gac, Jean Yves, Droubi, Abdullah, Fritz, Bertrand, Tardy, Yves
Format: Artikel
Sprache:eng
Schlagworte:
Freshwater
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Zusammenfassung:In the Lake Chad system, most of the strongly evaporated waters yield high concentrations in HCO 3CO 3 and Na, but very low concentrations in Ca and Mg. An experimental evaporation of the diluted original water has shown a Ca depletion due to calcite precipitation and a Mg depletion due to a Mg-silicate formation. The geochemical balance of Mg in the Lake Chad system is discussed.
ISSN:0009-2541
1872-6836
DOI:10.1016/0009-2541(77)90016-X