Structural Inventory of Great Basin Geothermal Systems and Definition of Favorable Structural Settings

Faulds, James E.

doi:10.15121/1148722

Title: Structural Inventory of Great Basin Geothermal Systems and Definition of Favorable Structural Settings

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Abstract

Structural controls of 426 geothermal systems in the Great Basin region including western Nevada, central Nevada, northwestern Nevada, northeastern Nevada, east-central Nevada, eastern California, southern Oregon, and western Utah were analyzed with literature research, air photos, Google Earth imagery, and/or field reviews. Of the systems analyzed, we were able to determine the structural settings of more than 240 sites. The structural catalogue is stored in a master spreadsheet included in this submission. Data components include structural setting, primary fault orientation, presence or absence of Quaternary faulting, reservoir lithology, geothermometry, presence or absence of recent magmatism, and distinguishing blind systems from those that have surface expressions. Systems were cataloged into the following eight major groups, based on the dominant pattern of faulting: - Major normal fault segments (i.e., near displacement maxima). - Fault bends. - Fault terminations or tips. - Step-overs or relay ramps in normal faults. - Fault intersections. - Accommodation zones (i.e., belts of intermeshing oppositely dipping normal faults), - Displacement transfer zones whereby strike-slip faults terminate in arrays of normal faults. - Transtensional pull-aparts. These settings form a hierarchal pattern with respect to fault complexity. - Major normal faults and fault bends are the simplest. - Fault terminationsmore »« less

Authors:

Faulds, James E.

University of Nevada

Publication Date:: Tue Dec 31 04:00:00 UTC 2013

Other Number(s):: 355

DOE Contract Number:: EE0002748

Research Org.:: DOE Geothermal Data Repository; University of Nevada

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Geothermal Technologies Program (EE-4G)

Collaborations:: University of Nevada Reno

Subject:: 15 GEOTHERMAL ENERGY; Blind Geothermal Systems; Geothermometry; McGee Mountain; Quaternary Faults; Structural Controls; Temperature; abraham-baker hot springs; alkali hot springs; alum-silver peak; alvord hot spring; antelope hot spring; antelope valley; ash springs; baileys hot spring; baileys/hicks/burrell hot springs; baltazor hot spring; beowawe; blue mountain; bog hot spring; borax lake; buckeye hot springs; burrell hot spring; california; central Nevada; chimney hot spring; columbus marsh; cove fort; crescent valley; crump geyser; dann ranch; dixie hot spring; duckwater; dyke hot springs; east-central nevada; eastern california; fales hot springs; field visits; fish lake valley; gabbs valley; geothermal; golconda; great basin; hand-me-down hot springs; hart mountain; hatton hot spring; hicks hot spring; hiko hot spring; hot creek butte; hot springs point; howard hot spring; iverson spring; joseph hot spring; macFarlane hot spring; mickey hot spring; moon river hot spring; moorman spring; nevada; newcastle; northeastern nevada; northwestern nevada; oregon; pinto hot springs; pumpernickel valley; railroad valley; rawhide-wedell hot springs; red hill hot spring; rhodes marsh; roosevelt; southern oregon; teels marsh; thermo; tipton hot springs; travertine hot springs; utah; veyo hot spring; walleys hot spring; western Nevada; western utah; wild rose; williams hot spring

OSTI Identifier:: 1148722

DOI:: https://doi.org/10.15121/1148722

Citation Formats


                    Faulds, James E. Structural Inventory of Great Basin Geothermal Systems and Definition of Favorable Structural Settings.  United States: N. p., 2013. 
        Web.  doi:10.15121/1148722.

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                    Faulds, James E. Structural Inventory of Great Basin Geothermal Systems and Definition of Favorable Structural Settings.  United States.  doi:https://doi.org/10.15121/1148722

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                    Faulds, James E. 2013.  
"Structural Inventory of Great Basin Geothermal Systems and Definition of Favorable Structural Settings".  United States.  doi:https://doi.org/10.15121/1148722.  https://www.osti.gov/servlets/purl/1148722. Pub date:Tue Dec 31 04:00:00 UTC 2013

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@article{osti_1148722,

  title        = {Structural Inventory of Great Basin Geothermal Systems and Definition of Favorable Structural Settings},

  author       = {Faulds, James E.},

  abstractNote = {Structural controls of 426 geothermal systems in the Great Basin region including western Nevada, central Nevada, northwestern Nevada, northeastern Nevada, east-central Nevada, eastern California, southern Oregon, and western Utah were analyzed with literature research, air photos, Google Earth imagery, and/or field reviews. Of the systems analyzed, we were able to determine the structural settings of more than 240 sites. The structural catalogue is stored in a master spreadsheet included in this submission. Data components include structural setting, primary fault orientation, presence or absence of Quaternary faulting, reservoir lithology, geothermometry, presence or absence of recent magmatism, and distinguishing blind systems from those that have surface expressions. Systems were cataloged into the following eight major groups, based on the dominant pattern of faulting: - Major normal fault segments (i.e., near displacement maxima). - Fault bends. - Fault terminations or tips. - Step-overs or relay ramps in normal faults. - Fault intersections. - Accommodation zones (i.e., belts of intermeshing oppositely dipping normal faults), - Displacement transfer zones whereby strike-slip faults terminate in arrays of normal faults. - Transtensional pull-aparts. These settings form a hierarchal pattern with respect to fault complexity. - Major normal faults and fault bends are the simplest. - Fault terminations are typically more complex than mid-segments, as faults commonly break up into multiple strands or horsetail near their ends. - A fault intersection is generally more complex, as it generally contains both multiple fault strands and can include discrete dilational quadrants. - A step-over consists of two overlapping fault terminations and thus involves additional complexity, especially where the relay ramp is breached by multiple fault splays between the main overlapping faults and thus contains multiple fault intersections. - Accommodation zones involve further complexity, as they contain multiple fault terminations and fault intersections.},

  doi          = {10.15121/1148722},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Dec 31 04:00:00 UTC 2013},

  month        = {Tue Dec 31 04:00:00 UTC 2013}

}

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DOI: https://doi.org/10.15121/1148722

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