Table 1.

Data relating to circulation and residence time of the principal thermal spring waters of the UK.

SiteT outflowMean ageYoung waterMax. TCirc. depthAge tracers
(°C)(kyr)(%)(°C)(m)
Taffs Well22c. 5<52760014C, 3H, CFCs/SF6, δ13C, δ18O/δ2H, noble gases
Buxton27c. 5<535100014C, 3H, CFCs/SF6, δ13C, δ18O/δ2H, noble gases
Bath455–10≤570300014C, 39Ar, 3H, CFCs/SF6, 85Kr, δ13C, δ18O/δ2H, noble gases

Circ., circulation; T, temperature. Data from Evans et al. (1979), Burgess et al. (1980), Brassington (2007), Farr & Bottrell (2013) and Edmunds et al. (2014).