Resurgent Dome Complex

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Resurgent Dome Complex

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Resurgent Dome Complex:
Resurgent domes are encountered near the center of many caldera depressions, and form via uplift of the caldera valley floor due to movement in the underlying magma chamber. Resurgent domes typically host numerous deformation structures that act as conduits for hydrothermal fluids in the shallow crust.
Other definitions:Wikipedia Reegle


Topographic Features

List of topographic features commonly encountered in geothermal resource areas:
A conceptual drawing of the Long Valley Caldera, California, illustrating the formation of a resurgent dome. http://www.iub.edu/~sierra/papers/2012/pardoski.html

Resurgent domes are encountered near the center of many caldera depressions, and form via uplift of the caldera valley floor due to movement in the underlying magma chamber. Resurgent domes do not form via eruption of lava, but from the migration of magma in the subsurface that results in deformation of the overlying crust. Resurgent domes typically host numerous deformation structures that act as conduits for hydrothermal fluids in the shallow crust.

Examples

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CSV
Geothermal
Resource
Area
Geothermal
Region
Tectonic
Setting
Host
Rock
Age
Host
Rock
Lithology
Mean
Capacity
Mean
Reservoir
Temp
Fenton Hill HDR Geothermal Area Rio Grande Rift Rift Zone
Extensional Tectonics
Precambrian Crystalline basement “pCu” (undifferentiated in map units); Biotite Granodiorite (Phase I Reservoir); Gneiss, Schist, Granodiorite, Granite, Metavolcanic Rocks (Phase II Reservoir) 20 MW20,000 kW
20,000,000 W
20,000,000,000 mW
0.02 GW
2.0e-5 TW
508.15 K235 °C
455 °F
914.67 °R
Valles Caldera - Redondo Geothermal Area Rio Grande Rift Rift Zone
Extensional Tectonics
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 Rift Zone
Extensional Tectonics
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”

References