Intrusion Margins and Associated Fractures

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Intrusion Margins and Associated Fractures

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Intrusion Margins and Associated Fractures:
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Fractures caused by igneous activity creates permeability, allowing water to circulate deep beneath the surface thus becoming heated in the process. http://www.indiana.edu/~sierra/papers/2007/burnham.html

Hydrothermal circulation often occurs at the lithologic boundaries of igneous intrusions and along the fractures they induce in the country rock.

Examples

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CSV
Geothermal
Resource
Area
Geothermal
Region
Tectonic
Setting
Host
Rock
Age
Host
Rock
Lithology
Mean
Capacity
Mean
Reservoir
Temp
Blue Mountain Geothermal Area Northwest Basin and Range Geothermal Region Extensional Tectonics 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
Chena Geothermal Area Alaska Geothermal Region Non-Tectonic 90 Ma Granitic Pluton 0.4 MW400 kW
400,000 W
400,000,000 mW
4.0e-4 GW
4.0e-7 TW
371.15 K98 °C
208.4 °F
668.07 °R
Kilauea East Rift Geothermal Area Hawaii Geothermal Region Hot Spot 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
Waunita Hot Springs Geothermal Area Rio Grande Rift

References