Displacement Transfer Zone

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Displacement Transfer Zone:
Displacement transfer zones facilitate the transfer of strain between normal and strike-slip faults. Intersections between strike-slip faults in the Walker Lane and N- to NNE-striking normal faults commonly host geothermal systems, focused along the normal faults proximal to their dilational intersections with nearby strike-slip faults.
Other definitions:Wikipedia Reegle


Dilational fault intersection between oblique-slip normal faults.[1]

Faulds uses these terms (fault intersection and a subset classification - displacement transfer zone) as structural controls found in the Basin and Range province of the US.

Fault intersections between normal faults and transversely oriented strike-slip or oblique-slip faults account for 22% of the Basin & Range structures known to host geothermal systems as of 2011. Multiple minor faults in these areas create connections between major structures, allowing fluids to flow through highly fractured dilational quadrants.[1]

Displacement transfer zones represent a major subset of fault intersection types, hosting 5% of the known geothermal systems in the Basin & Range. Intersections between strike-slip faults in the Walker Lane and N- to NNE-striking normal faults commonly host geothermal systems, focused along the normal faults proximal to their dilational intersections with nearby dextral faults.[1]

Examples

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CSV
Geothermal
Resource
Area
Geothermal
Region
Tectonic
Setting
Host
Rock
Age
Host
Rock
Lithology
Mean
Capacity
Mean
Reservoir
Temp
Amedee Geothermal AreaWalker-Lane Transition ZoneExtensional TectonicsMesozoicgranite; granodiorite
Long Valley Caldera Geothermal AreaWalker-Lane Transition ZoneExtensional TectonicsQuaternaryBishop Tuff, Metamorphic Basement38 MW
38,000 kW
38,000,000 W
38,000,000,000 mW
0.038 GW
3.8e-5 TW
513.15 K
240 °C
464 °F
923.67 °R
North Brawley Geothermal AreaGulf of California Rift ZoneStrike-SlipArkosic and quartz dominated sandstones50 MW
50,000 kW
50,000,000 W
50,000,000,000 mW
0.05 GW
5.0e-5 TW
539.15 K
266 °C
510.8 °F
970.47 °R
Wendel Geothermal AreaWalker-Lane Transition Zone Geothermal RegionExtensional TectonicsMesozoicGranite, Granodiorite3.8 MW
3,800 kW
3,800,000 W
3,800,000,000 mW
0.0038 GW
3.8e-6 TW
413.15 K
140 °C
284 °F
743.67 °R

References

  1. 1.0 1.1 1.2 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