A magnesium correction for the Na-K-Ca chemical geothermometer
Open-File Report
78-986
By: R.O. Fournier and Robert W. Potter
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Abstract
Graphs and equations have been devised to correct for the adverse effects of magnesium upon the Na-K-Ca geothermometer. Either the graphs or equations can be used to determine temperature corrections when given waters have Na-K-Ca calculated temperatures above 70? C and values of R less than 50, where R = {Mg/(Mg + Ca + K)} x 100 in equivalents. Waters with values of R greater than 50 probably come from relatively cool aquifers with temperatures about equal to the measured spring temperature, irrespective of much higher calculated Na-K-Ca temperatures.
Suggested Citation
Fournier, R., Potter, R., 1978, A magnesium correction for the Na-K-Ca chemical geothermometer: U.S. Geological Survey Open-File Report 78-986, 25 p. :ill. ;27 cm., https://doi.org/10.3133/ofr78986.
ISSN: 2331-1258 (online)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | A magnesium correction for the Na-K-Ca chemical geothermometer |
| Series title | Open-File Report |
| Series number | 78-986 |
| DOI | 10.3133/ofr78986 |
| Year Published | 1978 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey, |
| Description | 25 p. :ill. ;27 cm. |