It decided to keep the shaft open until it would be possible to organise regular geothermal observations within it.
However, three indices lend support to geothermal activity, just not necessarily mantle derived.
Tests on the subsurface would require locating geothermal regions associated with ground ice and sampling the ice for geochemical analysis.
The rather high geothermal gradients suggested by this calculation may well result from regional magmatism, as discussed above.
This process also increases the depth extent of the high geothermal gradients in the mid-upper crust, potentially promoting conditions for crustal melting.
The most important temperature data used to characterize the geothermal field of sedimentary basins are those from systematic steady-state temperature measurements and well tests.
A non-volcanic, topographydriven geothermal system, harboring a microbiological community, operates in an extremely cold environment and discharges through solid ice.
Monitoring is also important in the case of reinjection of cooled geothermal water, which is much preferable to surface disposal on environmental grounds.
