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Table 5 Estimated reservoir temperatures (°C) for the Şavşat thermal waters using silica geothermometers (SiO2 = 125.8 mg/L)

From: Conceptual model of the Şavşat (Artvin/NE Turkey) Geothermal Field developed with hydrogeochemical, isotopic, and geophysical studies

Geothermometers

Equations

References

Calculated temp.

SiO2 (ά Cristobalite)

t = 1000/(4.78 − logSiO2) − 273.15

Fournier (1977)

100

SiO2 (Quartz)

t = 1309/(5.19 − logSiO2) − 273.15

Fournier (1977)

150

SiO2 (Quartz steam loss)

t = 1522/(5.75 − logSiO2) − 273.15

Fournier (1977)

144

SiO2 (Quartz steam loss)

t = 1264/(5.31 − logSiO2) − 273.15

Arnorsson et al. (1983)

121

SiO2 (Quartz steam loss)

t = 1164/(4.9 − logSiO2) − 273.15

Arnorsson et al. (1983)

143

SiO2 (Chalcedony)

t = 1032/(4.69 − logSiO2) − 273.15

Fournier (1977)

125

SiO2 (Chalcedony)

t = 1112/(4.91 − logSiO2) − 273.15

Arnorsson et al. (1983)

122