Fig. 3From: Geochemical/hydrochemical evaluation of the geothermal potential of the Lamongan volcanic field (Eastern Java, Indonesia) Plot showing the stable-isotope measured 18O vs. 2H measured on the warm springs samples and plotted with the meteoric water reference. A significant trend cannot be recognized as the samples lie all very close to the meteoric line. No relevant information can be obtained about water–rock interactionBack to article page