Many geothermal areas may be considered to have no tectonic contribution to the geothermal resource. These areas are thought to have high heat flow resulting from high radiogenic sources beneath the crust, typically located within continental interiors.
For example, Chena Hot Springs in Alaska is located over a highly radiogenic granitic pluton. Chena’s back-arc setting, thought to be related to some rotation and extension, may provide the strain necessary to provide the faults and fractures for hydrothermal circulation.
Want to add an example to this list? Select a Geothermal Resource Area to edit its "Tectonic Setting" property using the "Edit with Form" option.CSV
|Chena Geothermal Area||Alaska Geothermal Region||Fault Intersection|
Intrusion Margins and Associated Fractures
|90 Ma||Granitic Pluton||0.4 MW|
|Larderello Geothermal Area||Italy Geothermal Region||Triassic||Dolostone; Metamorphic Basement||594 MW|