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A magnesium correction for the Na-K-Ca chemical geothermometer

Open-File Report 78-986

By:
and

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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.

Additional Publication Details

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
Edition:
-
Year Published:
1978
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
25 p. :ill. ;27 cm.