Fig. 4From: Water–rock interactions in the Bruchsal geothermal system by U–Th series radionuclidesUranium and thorium series disequilibria: specific activity of 238U and 232Th and their decay products measured in the Bruchsal brine. Error bars represent uncertainties due to counting statistics (± 2 \(\sigma\)). 230Th, 210Po, 233Th and 228Th activities are upper limits. Radionuclide movement down the decay chain is from left to rightBack to article page