Table 2.

Borehole data

NameNGRBGS refDate*Height (m)Z (m)Z1§ (m)Z2§ (m)T (°C)Q (mW m−2)TypeRef
Blythswood-1NS 50030 68230NS56NW581868.012117.4181051252EQMA, B, C
South BalgrayNS 55780 67810NS56NE3691869.07.1330320.61013715.364EQMA, B, C
Queenslie-4NS 64640 65975NS66NW326195277.6732.58069136BHTA, C
HallsideNS 66930 59740NS65NE661976.04.2654.22351.65035011.8LOGC, D
HurletNS 51110 61230NS56SW3331979.5.1830.31304.39529560C, D
MaryhillNS 57178 68558NS56NE17551983.12.1840306.510030320.0363EQMC, D
Bargeddie-1NS 69318 64649NS66SE4151989.08.13781043.601043.639DSTD, E
GGC01NS 60915 63109NS66SW37542018.12.129.661990196.814LOGF

*Date corresponds to date of last temperature measurement. If not stated, then taken as the same as the date that drilling concluded.

Height (m) above sea-level taken from borehole log.

Z is depth of well bottom taken from borehole log.

§Z1 to Z2 is the depth range over which heat flow Q is measured. For boreholes where Q is not measured, Z2 also corresponds to depth of deepest temperature measurement.

Type of measurement: BHT, bottom-hole temperature measurement; DST, drill stem test; EQM, equilibrium measurement; LOG, log temperature.

References: A, BGS borehole log; B, Thomson et al. (1869); C, Burley et al. (1984); D, previously unpublished data provided from BGS within the BritGeothermal research partnership, now published in Busby (2019); E, UK Onshore Geophysical Library, F, Starcher et al. (2019).