Major Normal Fault
From Open Energy Information
Major Normal Fault:
Normal faults are structures in which the hanging wall is down dropped along the fault plane relative to the foot wall. They are the predominant type of structure in extensional tectonic environments, but are commonly encountered in a number of geologic settings.
Controlling Structures
List of controlling structures typically associated with geothermal systems:
Faulds uses this term as a structural control found in the Basin and Range province of the US.
Major range front faults account for 3% of structural controls in the Great Basin. "Although exceptions exist, geothermal systems are relatively rare along the displacement-maxima zones or mid-segments of major normal faults (i.e., major range-front faults), possibly due to both reduced permeability in thick zones of clay gouge and periodic release of stress in major earthquakes."[1]
Examples
Want to add an example to this list? Select a Geothermal Resource Area to edit its "Controlling Structures" property using the "Edit with Form" option.
| Geothermal Resource Area | Geothermal Region | Tectonic Setting | Host Rock Age | Host Rock Lithology | Mean Capacity | Mean Reservoir Temp |
|---|---|---|---|---|---|---|
| Akita Geothermal Field | Northeast Honshu Arc | Subduction Zone | Tertiary | Dacite | 88.3 MW88,300 kW <br />88,300,000 W <br />88,300,000,000 mW <br />0.0883 GW <br />8.83e-5 TW <br /> | 548.15 K275 °C <br />527 °F <br />986.67 °R <br /> |
| Aluto-Langano Geothermal Area | East African Rift System - Ethiopian Rift Valley | Rift Zone | Basalt | 7.5 MW7,500 kW <br />7,500,000 W <br />7,500,000,000 mW <br />0.0075 GW <br />7.5e-6 TW <br /> | 561.15 K288 °C <br />550.4 °F <br />1,010.07 °R <br /> | |
| Bouillante Geothermal Area | Lesser Antilles Volcanic Arc | Subduction Zone | Chlorite | 15 MW15,000 kW <br />15,000,000 W <br />15,000,000,000 mW <br />0.015 GW <br />1.5e-5 TW <br /> | 528.15 K255 °C <br />491 °F <br />950.67 °R <br /> | |
| Bruchsal Geothermal Area | Upper Rhine Valley | Rift Zone | Triassic | Sandstone | 0.6 MW600 kW <br />600,000 W <br />600,000,000 mW <br />6.0e-4 GW <br />6.0e-7 TW <br /> | 413.15 K140 °C <br />284 °F <br />743.67 °R <br /> |
| Dixie Valley Geothermal Area | Central Nevada Seismic Zone Geothermal Region | Extensional Tectonics | Jurassic | Basalt | 62 MW62,000 kW <br />62,000,000 W <br />62,000,000,000 mW <br />0.062 GW <br />6.2e-5 TW <br /> | 504.15 K231 °C <br />447.8 °F <br />907.47 °R <br /> |
| Fang Geothermal Area | Thailand Geothermal Region | Granite | 0.3 MW300 kW <br />300,000 W <br />300,000,000 mW <br />3.0e-4 GW <br />3.0e-7 TW <br /> | 418.15 K145 °C <br />293 °F <br />752.67 °R <br /> | ||
| Fukushima Geothermal Area | Northeast Honshu Arc | Subduction Zone | 65 MW65,000 kW <br />65,000,000 W <br />65,000,000,000 mW <br />0.065 GW <br />6.5e-5 TW <br /> | 579.15 K306 °C <br />582.8 °F <br />1,042.47 °R <br /> | ||
| Gunun-Salak Geothermal Area | Sunda Volcanic Arc | Subduction Zone | 345 MW345,000 kW <br />345,000,000 W <br />345,000,000,000 mW <br />0.345 GW <br />3.45e-4 TW <br /> | 548.15 K275 °C <br />527 °F <br />986.67 °R <br /> | ||
| Java - Darajat Geothermal Area | Sunda Volcanic Arc | Subduction Zone | Volcanics | 255 MW255,000 kW <br />255,000,000 W <br />255,000,000,000 mW <br />0.255 GW <br />2.55e-4 TW <br /> | 518.15 K245 °C <br />473 °F <br />932.67 °R <br /> | |
| Java - Kamojang Geothermal Area | Sunda Volcanic Arc | Subduction Zone | 200 MW200,000 kW <br />200,000,000 W <br />200,000,000,000 mW <br />0.2 GW <br />2.0e-4 TW <br /> | 518.15 K245 °C <br />473 °F <br />932.67 °R <br /> | ||
| Java-Wayang Windu Geothermal Area | Sunda Volcanic Arc | Subduction Zone | 227 MW227,000 kW <br />227,000,000 W <br />227,000,000,000 mW <br />0.227 GW <br />2.27e-4 TW <br /> | 558.15 K285 °C <br />545 °F <br />1,004.67 °R <br /> | ||
| Landau Geothermal Area | Upper Rhine Valley | Rift Zone | 3.6 MW3,600 kW <br />3,600,000 W <br />3,600,000,000 mW <br />0.0036 GW <br />3.6e-6 TW <br /> | 413.15 K140 °C <br />284 °F <br />743.67 °R <br /> | ||
| Ogiri Geothermal Area | Ryuku Arc | Subduction Zone | Quaternary | Andesite | 30 MW30,000 kW <br />30,000,000 W <br />30,000,000,000 mW <br />0.03 GW <br />3.0e-5 TW <br /> | 533.15 K260 °C <br />500 °F <br />959.67 °R <br /> |
| Salavatli Geothermal Area | Aegean-West Anatolian Extensional Region | Extensional Tectonics | 58 MW58,000 kW <br />58,000,000 W <br />58,000,000,000 mW <br />0.058 GW <br />5.8e-5 TW <br /> | 444.15 K171 °C <br />339.8 °F <br />799.47 °R <br /> |
References
- ↑ James E. Faulds,Nicholas H. Hinz,Mark F. Coolbaugh,Patricia H. Cashman,Christopher Kratt,Gregory Dering,Joel Edwards,Brett Mayhew,Holly McLachlan. 2011. Assessment of Favorable Structural Settings of Geothermal Systems in the Great Basin, Western USA. In: Transactions. GRC Anual Meeting; 2011/10/23; San Diego, CA. Davis, CA: Geothermal Resources Council; p. 777–783