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A Geological And Geophysical Appraisal Of The Baca Geothermal Field, Valles Caldera, New Mexico
Abstract The Baca location #1 geothermal field is l
The Baca location #1 geothermal field is located in north-central New Mexico within the western half of the Plio-Pleistocene Valles Caldera. Steam and hot water are produced primarily from the northeast-trending Redondo Creek graben, where downhole temperatures exceed 260°C at depths of less than 2 km. Stratigraphically the reservoir region can be described as a five-layer sequence that includes Tertiary and Quaternary volcanic rocks, and Mesozoic and Tertiary sediments overlying Precambrian granitic basement. Production is mainly controlled by fractures and faults that are ultimately related to activity in the Rio Grande Rift system. Geophysically, the caldera is characterized by a gravity minimum and a resistivity low in its western half. A 40-mgal gravity minimum over the caldera is due mostly to the relatively low-density volcanics and sediments that fill the caldera and probably bears no relation to deep-seated magmatic sources. Two-dimensional gravity modeling indicates that the depth to Precambrian basement in Redondo Canyon is probably at least 3 km and may exceed 5 km in eastern parts of the caldera. Telluric and magnetotelluric surveys have shown that the reservoir region is associated with low resistivity and that a deep low-resistivity zone correlates well with the depth of the primary reservoir inferred from well data. Telluric and magnetotelluric data have also identified possible fault zones in the eastern and western sections of the production region that may form boundaries to the Redondo Creek reservoir. These data also suggest that the reservoir region is located at the intersection of lineaments that trend north-south and northeast-southwest. Magnetotelluric results indicate deep low resistivity at the western edge of the caldera which may be associated with deep hot fluids. On the basis of geophysical and well data, we make three estimates of reservoir dimensions. The estimates of the areal extent of the reservoir range from 10 to 30 km2, depending on whether the Sulphur Creek or the Valle Seco area is considered to contain deep geothermal resources.
ered to contain deep geothermal resources.  +
Author Michael Wilt  + , Stephen Vonder Haar  +
Citation Michael Wilt,Stephen Vonder Haar. 1986. [[A Geological And Geophysical Appraisal Of The Baca Geothermal Field, Valles Caldera, New Mexico]]. Journal of Volcanology and Geothermal Research. 27(3-4):349-370.  +
Document type Journal Article  +
Foaf/Page http://www.sciencedirect.com/science/article/pii/037702738690020X  +
Link http://www.sciencedirect.com/science/article/pii/037702738690020X  +
Name A Geological And Geophysical Appraisal Of The Baca Geothermal Field, Valles Caldera, New Mexico  +
PublicationDate 1986  +
Publisher Journal of Volcanology and Geothermal Research  +
ReferenceGenre Geothermal  +
Has query
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A Geological And Geophysical Appraisal Of The Baca Geothermal Field, Valles Caldera, New Mexico + , A Geological And Geophysical Appraisal Of The Baca Geothermal Field, Valles Caldera, New Mexico + , A Geological And Geophysical Appraisal Of The Baca Geothermal Field, Valles Caldera, New Mexico + , A Geological And Geophysical Appraisal Of The Baca Geothermal Field, Valles Caldera, New Mexico + , A Geological And Geophysical Appraisal Of The Baca Geothermal Field, Valles Caldera, New Mexico +
Categories References , Geothermal References , Reference Materials
Modification date
"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by Semantic MediaWiki.
14:45:17, 22 May 2014  +
hide properties that link here 
Valles Caldera - Redondo Geothermal Area + , Valles Caldera - Sulphur Springs Geothermal Area + ReferenceForWiltHaar1986
Density Log At Valles Caldera - Redondo Geothermal Area (Wilt & Haar, 1986) + , Direct-Current Resistivity Survey At Valles Caldera - Redondo Geothermal Area (Wilt & Haar, 1986) + , Direct-Current Resistivity Survey At Valles Caldera - Sulphur Springs Geothermal Area (Wilt & Haar, 1986) + , Ground Gravity Survey At Valles Caldera - Redondo Geothermal Area (Wilt & Haar, 1986) + , Ground Gravity Survey At Valles Caldera - Sulphur Springs Geothermal Area (Wilt & Haar, 1986) + , Magnetotellurics At Valles Caldera - Redondo Geothermal Area (Wilt & Haar, 1986) + , Magnetotellurics At Valles Caldera - Sulphur Springs Geothermal Area (Wilt & Haar, 1986) + , Modeling-Computer Simulations At Valles Caldera - Redondo Geothermal Area (Wilt & Haar, 1986) + , Modeling-Computer Simulations At Valles Caldera - Sulphur Springs Geothermal Area (Wilt & Haar, 1986) + , Resistivity Log At Valles Caldera - Sulphur Springs Geothermal Area (Wilt & Haar, 1986) + Reference material
 
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