Encyclopedia
Geothermal Resources
Geothermal resources are recognized as a part of geoenergy resources, including all products of geothermal processes, such as underground geothermal waters, steam, and brines, taking into account substances artificially introduced into underground geothermal formations; heat and other energy contained in underground geothermal formations
Source: "MODEL CODE ON MINERAL RESOURCES AND THEIR USE FOR CIS COUNTRIES PARTICIPANTS"