CV-2: Plutonic Geothermal Play Type

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CV-2: Plutonic Geothermal Play Type

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CV-2: Plutonic Geothermal Play Type:
A pluton is a body of intrusive igneous rock that is crystallized by the slow cooling of magma. A plutonic geothermal play type is an area of heat generated by surrounding plutons and can be used to geothermal electricity.
Other definitions:Wikipedia Reegle


A cross-section depicting an active volcano and a inactive pluton. This pluton could be still cooling, releasing geothermal heat (ref: usgs.gov)


Plutonic geothermal plays have a heat source in the form of a crystalline rock enriched in heat generating elements or a young, crystallized, but still cooling intrusive igneous body.[1] These plays are located near mountain ranges and can coexist with magmatic play types. The surrounding mountain ranges provide a high recharge rate of circulating meteoric water which drives a hydrothermal system with possible vapor partition above the hot rock.[1] There are two types of plutonic plays, recent or active volcanism and inactive volcanism.





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
Play Type Control
Structure
Host
Rock
Age
Host
Rock
Lithology
Mean
Capacity
Mean
Reservoir
Temp
Boyes Hot Springs Geothermal Area Holocene Magmatic CV-2b: Plutonic - Inactive Volcanism
Calistoga Hot Springs Geothermal Area Holocene Magmatic CV-2b: Plutonic - Inactive Volcanism
Clear Lake Geothermal Area Holocene Magmatic CV-2b: Plutonic - Inactive Volcanism
Geysers Geothermal Area Holocene Magmatic CV-2b: Plutonic - Inactive Volcanism Pull-Apart in Strike-Slip Fault Zone Mesozoic metamorphosed sandstone 1,585 MW1,585,000 kW
1,585,000,000 W
1,585,000,000,000 mW
1.585 GW
0.00159 TW
551.15 K278 °C
532.4 °F
992.07 °R
Geysers Hi-T Reservoir Geothermal Area Holocene Magmatic CV-2b: Plutonic - Inactive Volcanism
Ngatamariki Geothermal Area New Zealand Geothermal Region CV-2a: Plutonic - Recent or Active Volcanism 82 MW82,000 kW
82,000,000 W
82,000,000,000 mW
0.082 GW
8.2e-5 TW
553.15 K280 °C
536 °F
995.67 °R
Sonoma Mission Inn Geothermal Area Holocene Magmatic CV-2b: Plutonic - Inactive Volcanism
Travale-Radicondoli Geothermal Area Italy Geothermal Region CV-2a: Plutonic - Recent or Active Volcanism Triassic Dolostone; Metamorphic basement 200 MW200,000 kW
200,000,000 W
200,000,000,000 mW
0.2 GW
2.0e-4 TW
543.15 K270 °C
518 °F
977.67 °R
Valles Caldera - Redondo Geothermal Area Rio Grande Rift CV-2a: Plutonic - Recent or Active Volcanism Fault Intersection
Stratigraphic Boundaries
Caldera Rim Margins
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 CV-2a: Plutonic - Recent or Active Volcanism Fault Intersection
Stratigraphic Boundaries
Caldera Rim Margins
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”
Wilbur Springs Geothermal Area Holocene Magmatic CV-2b: Plutonic - Inactive Volcanism

References

  1. 1.0 1.1 1.2 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. 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