CV-3: Extensional Domain

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CV-3: Extensional Domain

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CV-3: Extensional Domain:
An extensional domain play is an area of high thermal gradients provided by an elevated mantle. This elevated mantle is caused by crustal extension and thinning.
Other definitions:Wikipedia Reegle



Badwater Basin in Death Valley, California, U.S.A. This area is below sea level due to crustal extension.

Crustal extension and thinning cause the mantle to become elevated. This elevated mantle results in a higher geothermal gradient within the crust. Meteoric water circulates through deep faults or permeable formations in the crust and becomes heated.

Typical faults formed by extension of the crust (ref: U.S. Geological Survey)










According to Moeck and Beardsmore, extensional domain geothermal plays typically have the following properties:[2]

  • Geologic Setting – Metamorphic Core Complexes, Back-arc Extension, Pull-apart Basins, Intracontinental Rifts
  • Heat Source/Storage Properties of Reservoir – Thinned Crust+Elevated Heatflow, Recent Extensional Domains
  • Dominant Heat Transport Mechanism – Fault Controlled, Hydrothermal Circulation










Examples

Want to add an example to this list? Select a Geothermal Resource Area to edit its "Moeck-Beardsmore Play Type" property using the "Edit with Form" button.

CSV
Geothermal
Resource
Area
Geothermal
Region
Control
Structure
Host
Rock
Age
Host
Rock
Lithology
Mean
Capacity
Mean
Reservoir
Temp
Alasehir Geothermal Area Aegean-West Anatolian Extensional Region 48 MW48,000 kW
48,000,000 W
48,000,000,000 mW
0.048 GW
4.8e-5 TW
434.15 K161 °C
321.8 °F
781.47 °R
Altheim Geothermal Area Upper Austrian Molasse Basin Jurassic Limestone; Dolomites 1 MW1,000 kW
1,000,000 W
1,000,000,000 mW
1.0e-3 GW
1.0e-6 TW
373.15 K100 °C
212 °F
671.67 °R
Bad Blumau Geothermal Area Styrian Basin Dolomite 0.25 MW250 kW
250,000 W
250,000,000 mW
2.5e-4 GW
2.5e-7 TW
383.15 K110 °C
230 °F
689.67 °R
Beowawe Hot Springs Geothermal Area Central Nevada Seismic Zone Geothermal Region Pull-Apart in Strike-Slip Fault Zone Ordovician shale; quartzite 17 MW17,000 kW
17,000,000 W
17,000,000,000 mW
0.017 GW
1.7e-5 TW
483.15 K210 °C
410 °F
869.67 °R
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
Brady Hot Springs Geothermal Area Northwest Basin and Range Geothermal Region Accommodation Zone Mesozoic metamorphic rocks 26.1 MW26,100 kW
26,100,000 W
26,100,000,000 mW
0.0261 GW
2.61e-5 TW
455.15 K182 °C
359.6 °F
819.27 °R
Bruchsal Geothermal Area Upper Rhine Valley Major Normal Fault Triassic Sandstone 0.6 MW600 kW
600,000 W
600,000,000 mW
6.0e-4 GW
6.0e-7 TW
413.15 K140 °C
284 °F
743.67 °R
Coso Geothermal Area Walker-Lane Transition Zone Pull-Apart in Strike-Slip Fault Zone Mesozoic granitic 300 MW300,000 kW
300,000,000 W
300,000,000,000 mW
0.3 GW
3.0e-4 TW
571.15 K298 °C
568.4 °F
1,028.07 °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
Dixie Valley Geothermal Area Central Nevada Seismic Zone Geothermal Region Stepover or Relay Ramp in Normal Fault Zones
Major Normal Fault
Jurassic Basalt 62 MW62,000 kW
62,000,000 W
62,000,000,000 mW
0.062 GW
6.2e-5 TW
504.15 K231 °C
447.8 °F
907.47 °R
Fernley Geothermal Area Northwest Basin and Range Geothermal Region 30 MW30,000 kW
30,000,000 W
30,000,000,000 mW
0.03 GW
3.0e-5 TW
422.15 K149 °C
300.2 °F
759.87 °R
Germencik Geothermal Area Aegean-West Anatolian Extensional Region Fault Intersection Marble 73.4 MW73,400 kW
73,400,000 W
73,400,000,000 mW
0.0734 GW
7.34e-5 TW
491.15 K218 °C
424.4 °F
884.07 °R
Gumuskoy Geothermal Area Aegean-West Anatolian Extensional Region Fault Intersection Paleozic Marble 13.2 MW13,200 kW
13,200,000 W
13,200,000,000 mW
0.0132 GW
1.32e-5 TW
413.15 K140 °C
284 °F
743.67 °R
Hot Sulphur Springs Geothermal Area Central Nevada Seismic Zone Geothermal Region 18 MW18,000 kW
18,000,000 W
18,000,000,000 mW
0.018 GW
1.8e-5 TW
445.15 K172 °C
341.6 °F
801.27 °R
Humboldt House Geothermal Area Northwest Basin and Range Geothermal Region Fault Controlled 0.3 MW300 kW
300,000 W
300,000,000 mW
3.0e-4 GW
3.0e-7 TW
466.15 K193 °C
379.4 °F
839.07 °R
Iwate Geothermal Area Northeast Honshu Arc Miocene; Pre-Tertiary Dacitic welded tuff; Marine Sediments Tuffs; Shales; Chert; Slate; Granodiorite 103.5 MW103,500 kW
103,500,000 W
103,500,000,000 mW
0.104 GW
1.035e-4 TW
578.15 K305 °C
581 °F
1,040.67 °R
Kizildere Geothermal Area Aegean-West Anatolian Extensional Region Fault Intersection Miocene Limestone 102 MW102,000 kW
102,000,000 W
102,000,000,000 mW
0.102 GW
1.02e-4 TW
459.15 K186 °C
366.8 °F
826.47 °R
Klamath Falls Geothermal Area Cascades Geothermal Region 1.8 MW1,800 kW
1,800,000 W
1,800,000,000 mW
0.0018 GW
1.8e-6 TW
386.15 K113 °C
235.4 °F
695.07 °R
Landau Geothermal Area Upper Rhine Valley Major Normal Fault 3.6 MW3,600 kW
3,600,000 W
3,600,000,000 mW
0.0036 GW
3.6e-6 TW
413.15 K140 °C
284 °F
743.67 °R
Langjiu Geothermal Area Tibet Geothermal Region Fault Controlled 1 MW1,000 kW
1,000,000 W
1,000,000,000 mW
1.0e-3 GW
1.0e-6 TW
377.15 K104 °C
219.2 °F
678.87 °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
Mori Geothermal Area Kuril-Kamchatka Arc Caldera Rim Margins Pre-Tertiary Limestone 50 MW50,000 kW
50,000,000 W
50,000,000,000 mW
0.05 GW
5.0e-5 TW
513.15 K240 °C
464 °F
923.67 °R
Nagqu Geothermal Area Tibet geothermal region 5.8 MW5,800 kW
5,800,000 W
5,800,000,000 mW
0.0058 GW
5.8e-6 TW
388.15 K115 °C
239 °F
698.67 °R
Neal Hot Springs Geothermal Area Snake River Plain Pull-Apart in Strike-Slip Fault Zone Miocene Basalt 33 MW33,000 kW
33,000,000 W
33,000,000,000 mW
0.033 GW
3.3e-5 TW
429.15 K156 °C
312.8 °F
772.47 °R
Pamukoren Geothermal Area Aegean-West Anatolian Extensional Region 45 MW45,000 kW
45,000,000 W
45,000,000,000 mW
0.045 GW
4.5e-5 TW
448.15 K175 °C
347 °F
806.67 °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
Romania Geothermal Area Europe 0.5 MW500 kW
500,000 W
500,000,000 mW
5.0e-4 GW
5.0e-7 TW
358.15 K85 °C
185 °F
644.67 °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
Salavatli Geothermal Area Aegean-West Anatolian Extensional Region Major Normal Fault 58 MW58,000 kW
58,000,000 W
58,000,000,000 mW
0.058 GW
5.8e-5 TW
444.15 K171 °C
339.8 °F
799.47 °R
Salt Wells Geothermal Area Northwest Basin and Range Geothermal Region 23.6 MW23,600 kW
23,600,000 W
23,600,000,000 mW
0.0236 GW
2.36e-5 TW
466.15 K193 °C
379.4 °F
839.07 °R
San Emidio Desert Geothermal Area Northwest Basin and Range Geothermal Region 14.22 MW14,220 kW
14,220,000 W
14,220,000,000 mW
0.0142 GW
1.422e-5 TW
426.15 K153 °C
307.4 °F
767.07 °R
Soda Lake Geothermal Area Northwest Basin and Range Geothermal Region Miocene pumice tuff 26.1 MW26,100 kW
26,100,000 W
26,100,000,000 mW
0.0261 GW
2.61e-5 TW
452.15 K179 °C
354.2 °F
813.87 °R
Steamboat Springs Geothermal Area Walker-Lane Transition Zone Fault Intersection 1- Cretaceous; 2- Pliocene-Pleistocene 1- granodiorite; 2- basaltic andesite 147 MW147,000 kW
147,000,000 W
147,000,000,000 mW
0.147 GW
1.47e-4 TW
483.15 K210 °C
410 °F
869.67 °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
Thermo Hot Springs Geothermal Area Northern Basin and Range Geothermal Region 10.3 MW10,300 kW
10,300,000 W
10,300,000,000 mW
0.0103 GW
1.03e-5 TW
462.15 K189 °C
372.2 °F
831.87 °R
Tuzla Geothermal Area Aegean-West Anatolian Extensional Region Fault Intersection 8 MW8,000 kW
8,000,000 W
8,000,000,000 mW
0.008 GW
8.0e-6 TW
405.15 K132 °C
269.6 °F
729.27 °R
Wabuska Hot Springs Geothermal Area Walker-Lane Transition Zone Geothermal Region Quaternary gravels; sands 2.4 MW2,400 kW
2,400,000 W
2,400,000,000 mW
0.0024 GW
2.4e-6 TW
403.15 K130 °C
266 °F
725.67 °R
Wairakei-Poihipi Geothermal Area Taupo Volcanic Zone Fault Intersection Quaternary Volcaniclastic 352 MW352,000 kW
352,000,000 W
352,000,000,000 mW
0.352 GW
3.52e-4 TW
483.15 K210 °C
410 °F
869.67 °R
Wendel Geothermal Area Walker-Lane Transition Zone Geothermal Region Displacement Transfer Zone Mesozoic Granite, Granodiorite 3.8 MW3,800 kW
3,800,000 W
3,800,000,000 mW
0.0038 GW
3.8e-6 TW
413.15 K140 °C
284 °F
743.67 °R
Wild Rose Geothermal Area Walker-Lane Transition Zone Geothermal Region Fault Controlled 16 MW16,000 kW
16,000,000 W
16,000,000,000 mW
0.016 GW
1.6e-5 TW
412.15 K139 °C
282.2 °F
741.87 °R
Yangbajain Geothermal Area Himalayan Mountain Range Fault Intersection 24 MW24,000 kW
24,000,000 W
24,000,000,000 mW
0.024 GW
2.4e-5 TW
478.15 K205 °C
401 °F
860.67 °R




References

  1. Inga S. Moeck,Graeme Beardsmore. 2014. A New 'Geothermal Play Type' Catalog: Streamlining Exploration Decision Making. In: Proceedings. Thirty-Ninth Workshop on Geothermal Reservoir Engineering; 2014/02/24; Stanford, California. Stanford, California: Stanford University; p. 8
  2. 2.0 2.1 Inga Moeck. 2013. Geothermal Plays in Geologic Settings. In: IGA Workshop on Developing Best Practice for Geothermal Exploration and Resource/Reserve Classification; 2013/11/14; Essen, Germany. IGA website: International Geothermal Association; p. 19