Blind Geothermal System

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Blind Geothermal System

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Blind Geothermal System:
An area with a geothermal heat source, but no modern surface manifestations.
Other definitions:Wikipedia Reegle


Many geothermal areas show no signs of geothermal activity at the surface if the heated water is too far below or no conduits to the surface are available. An area of geothermal activity with no surface features is referred to as a “blind geothermal system.”




Examples

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CSV
Geothermal
Resource
Area
Geothermal
Region
Control
Structure
Host
Rock
Age
Host
Rock
Lithology
Mean
Capacity
Mean
Reservoir
Temp
Blue Mountain Geothermal Area Northwest Basin and Range Geothermal Region Intrusion Margins and Associated Fractures
Fault Intersection
Triassic Metasedimentary 49.5 MW49,500 kW
49,500,000 W
49,500,000,000 mW
0.0495 GW
4.95e-5 TW
470.15 K197 °C
386.6 °F
846.27 °R
Desert Peak Geothermal Area Northwest Basin and Range Geothermal Region Stepover or Relay Ramp in Normal Fault Zones Mesozoic greenstone 23 MW23,000 kW
23,000,000 W
23,000,000,000 mW
0.023 GW
2.3e-5 TW
481.15 K208 °C
406.4 °F
866.07 °R
Heber Geothermal Area Gulf of California Rift Zone Pull-Apart in Strike-Slip Fault Zone sandstone 180 MW180,000 kW
180,000,000 W
180,000,000,000 mW
0.18 GW
1.8e-4 TW
447.15 K174 °C
345.2 °F
804.87 °R
Kilauea East Rift Geothermal Area Hawaii Geothermal Region Intrusion Margins and Associated Fractures
Fissure Swarms
Quaternary Tholeiitic Basalt 47 MW47,000 kW
47,000,000 W
47,000,000,000 mW
0.047 GW
4.7e-5 TW
575.15 K302 °C
575.6 °F
1,035.27 °R
Lightning Dock Geothermal Area Southern Basin and Range Geothermal Region Fault Intersection Paleozoic carbonate rocks and late Tertiary volcanic rocks 4.4 MW4,400 kW
4,400,000 W
4,400,000,000 mW
0.0044 GW
4.4e-6 TW
443.15 K170 °C
338 °F
797.67 °R
North Brawley Geothermal Area Gulf of California Rift Zone Displacement Transfer Zone
Fault Intersection
Arkosic and quartz dominated sandstones 50 MW50,000 kW
50,000,000 W
50,000,000,000 mW
0.05 GW
5.0e-5 TW
539.15 K266 °C
510.8 °F
970.47 °R
Raft River Geothermal Area Northern Basin and Range Geothermal Region Fault Intersection 1- Archean; 2-Proterozoic 1- quartz monzonite; 2-schist; quartzite 13 MW13,000 kW
13,000,000 W
13,000,000,000 mW
0.013 GW
1.3e-5 TW
468.15 K195 °C
383 °F
842.67 °R
Rye Patch Geothermal Area Northwest Basin and Range Geothermal Region 12.5 MW12,500 kW
12,500,000 W
12,500,000,000 mW
0.0125 GW
1.25e-5 TW
486.15 K213 °C
415.4 °F
875.07 °R
Stillwater Geothermal Area Northwest Basin and Range Geothermal Region Accommodation Zone Quaternary sandstone 47.2 MW47,200 kW
47,200,000 W
47,200,000,000 mW
0.0472 GW
4.72e-5 TW
447.15 K174 °C
345.2 °F
804.87 °R

References