Caldera Rim Margins
From Open Energy Information
Controlling Structures
List of controlling structures typically associated with geothermal systems:
Caldera rims often act as adequate hydrothermal conduits. They are particularly productive when intersected by other faults.
Examples
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CSVGeothermal Resource Area | Geothermal Region | Tectonic Setting | Host Rock Age | Host Rock Lithology | Mean Capacity | Mean Reservoir Temp |
---|---|---|---|---|---|---|
Mori Geothermal Area | Kuril-Kamchatka Arc | Subduction Zone | Pre-Tertiary | Limestone | 50 MW 50,000 kW 50,000,000 W 50,000,000,000 mW 0.05 GW 5.0e-5 TW | 513.15 K 240 °C 464 °F 923.67 °R |
Valles Caldera - Redondo Geothermal Area | Rio Grande Rift | Extensional Tectonics Rift Zone | Mississippian-Pennsylvanian; Pleistocene, 1.6 to 1.25 Ma | Limestone-Madera Formation “MIPu”; Rhyolitic tuff-Intracaldera Bandelier Tuff (upper Tshirege “Qbt” and lower Otowi “Qbo” members); Caldera Fill Rhyolite (shallow) | ||
Valles Caldera - Sulphur Springs Geothermal Area | Rio Grande Rift | Extensional Tectonics Rift Zone | Precambrian; Mississippian-Pennsylvanian; Pleistocene, 1.6 to 1.25 Ma; Pliocene; Miocene | Crystalline basement “pCu”; Limestone-Madera Formation “MIPu”; Rhyolitic tuff-Bandelier Tuff (upper Tshirege “Qbt” and lower Otowi “Qbo” members); Caldera Fill Rhyolite (shallow); Dacitic/Andesitic to Rhyolitic lavas and tuffs-Keres Group Volcanics (shallow); Santa Fe Group volcaniclastics “Tsf” |