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Interpretation of Na-K-Mg relations in geothermal waters

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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.

Additional Publication Details

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
Number of Pages:
5
Conference Title:
1990 International Symposium on Geothermal Energy
Conference Location:
Kailua-Kona, HI, USA
Conference Date:
20 August 1990 through 24 August 1990