3D Model of the McGinness Hills Geothermal Area

E. Faulds, James

doi:10.15121/1136727

Title: 3D Model of the McGinness Hills Geothermal Area

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Abstract

The McGinness Hills geothermal system lies in a ~8.5 km wide, north-northeast trending accommodation zone defined by east-dipping normal faults bounding the Toiyabe Range to the west and west-dipping normal faults bounding the Simpson Park Mountains to the east. Within this broad accommodation zone lies a fault step-over defined by north-northeast striking, west-dipping normal faults which step to the left at roughly the latitude of the McGinness Hills geothermal system. The McGinness Hills 3D model consists of 9 geologic units and 41 faults. The basal geologic units are metasediments of the Ordovician Valmy and Vininni Formations (undifferentiated in the model) which are intruded by Jurassic granitic rocks. Unconformably overlying is a ~100s m-thick section of Tertiary andesitic lava flows and four Oligocene-to-Miocene ash-flow tuffs: The Rattlesnake Canyon Tuff, tuff of Sutcliffe, the Cambell Creek Tuff and the Nine Hill tuff. Overlying are sequences of pre-to-syn-extensional Quaternary alluvium and post-extensional Quaternary alluvium. 10-15 degrees eastward dip of the Tertiary stratigraphy is controlled by the predominant west-dipping fault set. Geothermal production comes from two west dipping normal faults in the northern limb of the step over. Injection is into west dipping faults in the southern limb of the step over. Production andmore »« less

Authors:: E. Faulds, James

Publication Date:: Tue Dec 31 00:00:00 EST 2013

Other Number(s):: 363

DOE Contract Number:: EE0002748

Research Org.:: USDOE Geothermal Data Repository (United States); 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

Subject:: 15 Geothermal Energy

Keywords:: geothermal; 3D Model; McGinness Hills; McGinness Hills Geothermal Area; faulting; tuff; stratigraphy; stratigraphic units; faults; cross-section; cross section; geology; geologic units; geologic contact; data; geospatial data

Geolocation:: 39.82267553767,-116.66790371094|39.538154664753,-116.66790371094|39.538154664753,-116.94520732422|39.82267553767,-116.94520732422|39.82267553767,-116.66790371094

OSTI Identifier:: 1136727

DOI:: https://doi.org/10.15121/1136727

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Citation Formats


                    E. Faulds, James. 3D Model of the McGinness Hills Geothermal Area.  United States: N. p., 2013. 
        Web.  doi:10.15121/1136727.

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                    E. Faulds, James. 3D Model of the McGinness Hills Geothermal Area.  United States.  doi:https://doi.org/10.15121/1136727

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                    E. Faulds, James. 2013.  
"3D Model of the McGinness Hills Geothermal Area".  United States.  doi:https://doi.org/10.15121/1136727.  https://www.osti.gov/servlets/purl/1136727. Pub date:Tue Dec 31 00:00:00 EST 2013

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@article{osti_1136727,

  title        = {3D Model of the McGinness Hills Geothermal Area},

  author       = {E. Faulds, James},

  abstractNote = {The McGinness Hills geothermal system lies in a ~8.5 km wide, north-northeast trending accommodation zone defined by east-dipping normal faults bounding the Toiyabe Range to the west and west-dipping normal faults bounding the Simpson Park Mountains to the east. Within this broad accommodation zone lies a fault step-over defined by north-northeast striking, west-dipping normal faults which step to the left at roughly the latitude of the McGinness Hills geothermal system. The McGinness Hills 3D model consists of 9 geologic units and 41 faults. The basal geologic units are metasediments of the Ordovician Valmy and Vininni Formations (undifferentiated in the model) which are intruded by Jurassic granitic rocks. Unconformably overlying is a ~100s m-thick section of Tertiary andesitic lava flows and four Oligocene-to-Miocene ash-flow tuffs: The Rattlesnake Canyon Tuff, tuff of Sutcliffe, the Cambell Creek Tuff and the Nine Hill tuff. Overlying are sequences of pre-to-syn-extensional Quaternary alluvium and post-extensional Quaternary alluvium. 10-15 degrees eastward dip of the Tertiary stratigraphy is controlled by the predominant west-dipping fault set. Geothermal production comes from two west dipping normal faults in the northern limb of the step over. Injection is into west dipping faults in the southern limb of the step over. Production and injection sites are in hydrologic communication, but at a deep level, as the northwest striking fault that links the southern and northern limbs of the step-over has no permeability.},

  doi          = {10.15121/1136727},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Dec 31 00:00:00 EST 2013},

  month        = {Tue Dec 31 00:00:00 EST 2013}

}

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DOI: https://doi.org/10.15121/1136727

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