Geology, Minerals, Energy, and Geophysics Science Center

Publications

Filter Total Items: 2,228
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Year Published: 2021

Progress and lessons learned from responses to landslide disasters

Landslides have the incredible power to transform landscapes and also, tragically, to cause disastrous societal impacts. Whereas the mechanics and effects of many landslide disasters have been analyzed in detail, the means by which landslide experts respond to these events has garnered much less attention. Herein, we evaluate nine landslide...

Collins, Brian D.; Reid, Mark E.; Coe, Jeffrey A.; Kean, Jason W.; Baum, Rex L.; Jibson, Randall W.; Godt, Jonathan W.; Slaughter, Stephen; Stock, Greg M.

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Year Published: 2021

Tungsten skarn mineral resource assessment of the Great Basin region of western Nevada and eastern California

A new quantitative mineral resource assessment for tungsten, a critical mineral commodity with highly concentrated production and a moderate risk of global supply disruption, was conducted for the Great Basin region of western Nevada and eastern California. This assessment was part of a larger effort focusing on three regions in the United States...

Lederer, Graham W.; Solano, Federico; Coyan, Joshua Aaron; Denton, Kevin; Watts, Kathryn E.; Mercer, Celestine N.; Bickerstaff, Damon; Granitto, Matthew

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Year Published: 2021

Remote thermal detection of exfoliation sheet deformation

A growing body of research indicates that rock slope failures, particularly from exfoliating cliffs, are promoted by rock deformations induced by daily temperature cycles. Although previous research has described how these deformations occur, full three-dimensional monitoring of both the deformations and the associated temperature changes has not...

Guerin, Antoine; Jaboyedoff, Michel; Collins, Brian D.; Stock, Greg M.; Derron, Marc-Henri; Abellan, Antonio; Matasci, Battista

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Year Published: 2021

Interpreting and reporting 40Ar/39Ar geochronologic data

The 40Ar/39Ar dating method is among the most versatile of geochronometers, having the potential to date a broad variety of K-bearing materials spanning from the time of Earth’s formation into the historical realm. Measurements using modern noble-gas mass spectrometers are now producing 40Ar/39Ar dates with analytical uncertainties of ∼0.1%,...

Schaen, Allen J.; Jicha, Brian R.; Hodges, Kip V.; Vermeesch, Pieter; Stelten, Mark E.; Mercer, Cameron M.; Phillips, David; Rivera, Tiffany; Jourdan, Fred; Matchan, Erin L.; Hemming, Sidney R.; Morgan, Leah E.; Kelley, Simon P.; Cassata, William S.; Heizler, Matt T.; Vasconcelos, Paulo M.; Benowitz, Jeff A.; Koppers, Anthony A.P. ; Mark, Darren F.; Niespolo, Elizabeth M.; Courtney J. Sprain; Hames, William E.; Kuiper, Klaudia F.; Turrin, Brent D.; Renne, Paul R.; Ross, Jake; Nomade, Sebastian; Guillou, Hervé; Webb, Laura E.; Cohen, Barbara A.; Calvert, Andrew T.; Joyce, Nancy; Ganderød, Morgan; Wijbrans, Jan; Ishizuka, Osamu; He, Huaiyu; Ramirez, Adán; Pfänder, Jörg; Lopez-Martínez, Margarita; Qiu, Huaning; Singer, Brad S.

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Year Published: 2020

Geothermal play fairway analysis of the Sou Hills, northern Nevada: A major quaternary accommodation zone in the Great Basin region

To facilitate discovery and development of blind geothermal systems in the Great Basin region, as well as assessment of known systems with surface hot springs, a play fairway approach was developed to evaluate and integrate multiple geologic and geophysical parameters for permeability and heat. Phase 1 of the project produced a geothermal...

Faulds, James E.; Sadowski, Andrew J.; Coolbaugh, Mark F.; Siler, Drew L.

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Year Published: 2020

Mapa metalogenético de América Central y El Caribe

La Asociación de Servicios Geológicos y Mineros de Iberoamérica (ASGMI), bajo los auspicios de la Comisión de la Carta Geológica del Mundo (CCGM) preparó la primera versión del Mapa Metalogénico de América Central y el Caribe. La coordinación general estuvo a cargo del Servicio Geológico Minero Argentino (SEGEMAR), con tres coordinaciones...

Zappettini, Eduardo O; Prieto-Rincon, Gloria; Amezcua, Natalia; Munoz-Tapia, Santiago; Sepúlveda-Ospina, Janeth; Celada-Arango, Carlos M.; Jara, David; Cazanas-Diaz, X; Torres-Zafra, Jorge L.; Cobiella-Reguera, Jorge L.; Zürcher, Lukas; Orris, Greta J.; Gray, Floyd; Maldonado-Diaz, Carolina; Rodriguez, Noe; Mérida-Montiel, Ramon; Zarruk, Carlos A.

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Year Published: 2020

Extension directions in the Colorado River extensional corridor compared to fragmentation of a structurally disrupted caldera in the Sacramento Mountains, southeastern California

The northwest trend of the southern Colorado River extensional corridor in the southwestern USA veers northward between 34° and 35° north latitude. The tilt axes of early Miocene west-tilted volcanic strata in the west-central Sacramento Mountains mirror this bend. Steeply dipping early Miocene strata and volcanics north and south of the bend...

Howard, Keith A.; Ferguson, Charles A.

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Year Published: 2020

Fault trace mapping and surface-fault-rupture special study zone delineation of the Wasatch Fault Zone, Utah and Idaho

The Wasatch fault zone (WFZ) is a 220-mile-long (350-km) fault zone divided into 10 structural segments extending from southeastern Idaho to central Utah. The central five segments of the WFZ underlie the densely populated Wasatch Front region, where the majority of Utah’s population and economy are proximal to the fault zone. The West Valley...

McDonald, Greg N.; Kleber, Emily J.; Hiscock, Adam I.; Bennett, S.; Bowman, Steve D.
McDonald, G.N., Kleber, E.J., Hiscock, A.I., Bennett, S.E.K., and Bowman, S.D., 2020, Fault trace mapping and surface-fault-rupture special study zone delineation of the Wasatch fault zone, Utah and Idaho: Utah Geological Survey Report of Investigation 280, 23 p., 1:24,000 scale, https://doi.org/10.34191/RI-280.

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Year Published: 2020

Machine learning for natural resource assessment: An application to the blind geothermal systems of Nevada

A study is underway to apply machine learning methods to evaluate natural resource potential. In particular, we are considering the search for blind geothermal systems in Nevada. Beginning with the data and experience from the previous Nevada play fairway analysis project, we are building models in TensorFlow/Keras and gaining experience toward...

Brown, Stephen C.; Coolbaugh, Mark F.; DeAngelo, Jacob; Faulds, James E.; Fehler, Michael; Gu, Chen; Queen, John H.; Treitel, Sven; Smith, Connor M.; Mlawsky, Eli

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Year Published: 2020

Outburst floods

Outbursts from impounded water bodies produce large, hazardous, and geomorphically significant floods affecting the Earth as well as other planetary surfaces. Two broad classes of impoundments are: (1) valleys blocked by ice, landslides, constructed dams, and volcanic materials; and (2) closed basins such as tectonic depressions, calderas, meteor...

O'Connor, Jim E.; Clague, John J.; Walder, Joseph S.; Manville, Vernon; Beebee, Robin A.

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Year Published: 2020

Geologic map and borehole stratigraphy of Hinkley Valley and vicinity, San Bernardino County, California

Hinkley Valley, in the central to western Mojave Desert of southeastern California, has a long historical record owing to its position as a crossroads for rail and road traffic and its position adjacent to the Mojave River. Subflow in the Mojave River provided groundwater recharge that maintained water consumption and demand by way of shallow...

Miller, David M.; Langenheim, Victoria E.; Haddon, Elizabeth K.
Miller, D.M., Langenheim, V.E., and Haddon, E.K., 2020, Geologic map and borehole stratigraphy of Hinkley Valley and vicinity, San Bernardino County, California: U.S. Geological Survey Scientific Investigations Map 3458, pamphlet 23 p., 2 sheets, scale 1:24,000, https://doi.org/10.3133/sim3458.