Magnesium correction to the Na K Ca chemical geothermometer
Equations and graphs have been devised to correct for the adverse effects of magnesium upon the Na-K-Ca chemical geothermometer. Either the equations or graphs can be used to determine appropriate temperature corrections for given waters with calculated Na-K-Ca temperatures > 70°C and R < 50, where R = {Mg(Mg + Ca + K)} × 100">R = {Mg(Mg + Ca + K)} × 100 with cation concentrations expressed in equivalents. Waters with R > 50 are probably derived from relatively cool aquifers with temperatures approximately equal to the measured spring temperature, irrespective of much higher calculated Na-K-Ca temperatures.
Citation Information
Publication Year | 1979 |
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Title | Magnesium correction to the Na K Ca chemical geothermometer |
DOI | 10.1016/0016-7037(79)90147-9 |
Authors | R.O. Fournier, R.W. Potter |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Geochimica et Cosmochimica Acta |
Index ID | 70012637 |
Record Source | USGS Publications Warehouse |