Sodium-Lithium Ratio In Water Applied To Geothermometry Of Geothermal Reservoirs

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Journal Article: Sodium-Lithium Ratio In Water Applied To Geothermometry Of Geothermal Reservoirs

Abstract
We propose here a new geothermometer for natural waters. Analyses from many explored geothermal fields allow us to define two empirical thermometric relationships. One is for waters of low to moderate salinity (Cl-< 0·3 M) log Na/Li = 1000/T -0·38 and one for marine waters and brines (Cl- > 0·3 M) log Na/Li = 1195/T + 0·38 These relationships, which at present are not well understood, result mainly from the increase of Li concentrations in waters with temperature. Equation (a) proved to be adequate for spring waters from mostly known geologic origin; this is an important feature in geochemical surveys for geothermal prospecting. Furthermore, when comparison between springs and drillhole chemistry of a given geothermal field is possible, the Na/Li geothermometer gives more reliable temperature estimates from the spring compositions than do classical geothermometers.

Authors 
C. Fouillac and G. Michard








Published Journal 
Geothermics, 1981





DOI 
Not Provided
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Citation

C. Fouillac,G. Michard. 1981. Sodium-Lithium Ratio In Water Applied To Geothermometry Of Geothermal Reservoirs. Geothermics. (!) .


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