Interpretation of Na-K-Mg relations in geothermal waters
By: R.O. Fournier
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Abstract
When using a Na-K-???Mg triangular diagram as an aid in the interpretation of a geothermal water, the estimated temperature of last water-rock equilibration may change by as much as 50??C, depending on which of the many Na/K geothermometers one assumes is correct. A particular geothermometer may work well in one place and not in another because of differences in the mineralogy of the phases that are in contact with the reservoir fluid. The position of the full equilibrium line that is used for geothermometry and for assessing degrees of departure from equilibrium also changes as the assumed K/???Mg geothermometer equation changes. The degree of ambiguity can be evaluated by utilizing the results of all the recently published Na/K geothermometers on a single Na-K-???Mg triangular plot.
Suggested Citation
Fournier, R., 1990, Interpretation of Na-K-Mg relations in geothermal waters, in Transactions - Geothermal Resources Council, v. 14, no. pt 2, Kailua-Kona, HI, USA, 20 August 1990 through 24 August 1990, p. 1421-1425.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Interpretation of Na-K-Mg relations in geothermal waters |
| ISBN | 0934412685 |
| Volume | 14 |
| Issue | pt 2 |
| Year Published | 1990 |
| Language | English |
| Publisher | Publ by Geothermal Resources Council |
| Publisher location | Davis, CA, United States |
| Larger Work Title | Transactions - Geothermal Resources Council |
| First page | 1421 |
| Last page | 1425 |
| Conference Title | 1990 International Symposium on Geothermal Energy |
| Conference Location | Kailua-Kona, HI, USA |
| Conference Date | 20 August 1990 through 24 August 1990 |