Unified Interior Regions

Region 7: Upper Colorado Basin

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USGS Science Centers in Region 7-Upper Colorado Basin produce hundreds of USGS-series publications, journal papers, and books each year that are subject to rigorous review by USGS specialists. The publications shown below on this page are related to study areas and staff members of USGS Science Centers in Region 7 compiled from the USGS Publications Warehouse.

Filter Total Items: 4,890
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Year Published: 2019

A supervolcano and its sidekicks: A 100 ka eruptive chronology of the Fish Canyon Tuff and associated units of the La Garita magmatic system

Establishing temporal constrains on major volcanic eruptions is limited by the precision of existing geochronometers. Prior work on the La Garita caldera, created by the eruption of the Fish Canyon Tuff, failed to resolve temporal differences between pre-, syn-, and post-collapse eruptive units. Here, we report 40Ar/39Ar geochronologic data...

Morgan, Leah E.; Johnstone, Samuel A.; Gilmer, Amy K.; Cosca, Michael A.; Thompson, Ren A.
Morgan, L. E., Johnstone, S. A., Gilmer, A. K., Cosca, M. A., & Thompson, R. A. (2019). A supervolcano and its sidekicks: A 100 ka eruptive chronology of the Fish Canyon Tuff and associated units of the La Garita magmatic system, Colorado, USA. Geology, 47(5), 453-456.

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Year Published: 2019

Imaging spectroscopy for the detection, assessment and monitoring of natural and anthropogenic hazards

Natural and anthropogenic hazards have the potential to impact all aspects of society including its economy and the environment. Diagnostic data to inform decision-making are critical for hazard management whether for emergency response, routine monitoring or assessments of potential risks. Imaging spectroscopy (IS) has unique contributions to...

Ong, Cindy; Carrere, Véronique; Chabrillat, Sabine; Clark, Roger N.; Hoefen, Todd M.; Kokaly, Raymond; Marion, Rodolphe; Souza Filho, Carlos Roberto de; Swayze, Gregg A.; Thompson, David R.

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Year Published: 2019

Geomorphic survey of North Fork Eagle Creek, New Mexico, 2017

About one-quarter of the water supply for the Village of Ruidoso, New Mexico, is derived from groundwater pumping along North Fork Eagle Creek in the Eagle Creek Basin near Alto, New Mexico. Because of concerns regarding the effects of groundwater pumping on surface-water hydrology in the Eagle Creek Basin and the effects of the 2012 Little Bear...

Graziano, Alexander P.
Graziano, A.P., 2019, Geomorphic survey of North Fork Eagle Creek, New Mexico, 2017: U.S. Geological Survey Open-File Report 2018–1187, 28 p., https://doi.org/10.3133/ofr20181187.

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Year Published: 2019

Effect of size-biased sampling on resource predictions from the three-part method for quantitative mineral resource assessment—A case study of the gold mines in the Timmins-Kirkland Lake area of the Abitibi greenstone belt, Canada:

The three-part method for quantitative mineral resource assessment is used by the U.S. Geological Survey to predict, within a specified assessment area, the number of undiscovered mineral deposits and the quantity of mineral resources in those undiscovered deposits. The effects of size-biased sampling on such predictions are evaluated in a case...

Ellefsen, Karl J.
Ellefsen, K.J., 2019, Effect of size-biased sampling on resource predictions from the three-part method for quantita-tive mineral resource assessment—A case study of the gold mines in the Timmins-Kirkland Lake area of the Abitibi greenstone belt, Canada: U.S. Geological Scientific Investigations Report 2018–5149, 15 p., https://doi.org/10.3133/sir20185149.

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Year Published: 2019

Improved enrichment factor calculations through principal component analysis: Examples from soils near breccia pipe uranium mines, Arizona, USA

The enrichment factor (EF) is a widely used metric for determining how much the presence of an element in a sampling media has increased relative to average natural abundance because of human activity. Calculation of an EF requires the selection of both a background composition and a reference element, choices that can strongly influence the...

Bern, Carleton R.; Walton-Day, Katie; Naftz, David L.

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Year Published: 2019

Assessment of undiscovered oil and gas resources in the Tindouf Basin Province, North Africa, 2018

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 2.6 billion barrels of oil and 123.9 trillion cubic feet of gas in the Tindouf Basin Province of North Africa.

Brownfield, Michael E.; Schenk, Christopher J.; Mercier, Tracey J.; Woodall, Cheryl A.; Le, Phuong A.; Tennyson, Marilyn E.; Finn, Thomas M.; Gaswirth, Stephanie B.; Pitman, Janet K.; Marra, Kristen R.; Leathers-Miller, Heidi M.; Drake, Ronald M.
Brownfield, M.E., Schenk, C.J., Mercier, T.J., Woodall, C.A., Le, P.A., Tennyson, M.E., Finn, T.M., Gaswirth, S.B., Pitman, J.K., Marra, K.R., Leathers-Miller, H.M., and Drake, R.M., II, 2019, Assessment of undiscovered oil and gas resources in the Tindouf Basin Province, North Africa, 2018: U.S. Geological Survey Fact Sheet 2019–3006, 2 p., https://doi.org/10.3133/fs20193006.

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Year Published: 2019

Geochemistry of a thermally immature Eagle Ford Group drill core in central Texas

The Upper Cretaceous Eagle Ford Group displays significant lateral and vertical geochemical variability. Much of the work on the Eagle Ford Group has been focused southwest of the San Marcos arch. To more fully characterize the Eagle Ford across the entire region, a thermally immature drill core was acquired north of the San Marcos arch that...

French, Katherine L.; Birdwell, Justin E.; Whidden, Katherine J.

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Year Published: 2019

Applying the Community Ice Sheet Model to evaluate PMIP3 LGM climatologies over the North American ice sheets

We apply the Community Ice Sheet Model (CISM2) to determine the extent to which the Last Glacial Maximum (LGM) temperature and precipitation climatologies from the Paleoclimate Modelling Intercomparison Project 3 (PMIP3) simulations support the large North American ice sheets that were prescribed as a boundary condition. We force CISM2 with eight...

Alder, Jay R.; Hostetler, Steven W.

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Year Published: 2019

Structure contour and overburden maps of the Niobrara interval of the Upper Cretaceous Cody Shale in the Wind River Basin, Wyoming

The Wind River Basin in central Wyoming is one of many structural and sedimentary basins that formed in the Rocky Mountain foreland during the Laramide orogeny. The basin is bounded by the Washakie, Owl Creek, and southern Bighorn uplifts on the north, the Casper arch on the east, the Granite Mountains uplift on the south, and Wind...

Finn, Thomas M.
Finn, T.M., 2019, Structure contour and overburden maps of the Niobrara interval of the Upper Cretaceous Cody Shale in the Wind River Basin, Wyoming: U.S. Geological Survey Scientific Investigations Map 3427, pamphlet 9 p., 2 sheets, scale 1:500,000, https://doi.org/10.3133/sim3427

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Year Published: 2019

Historical background and current developments for mapping burned area from satellite Earth observation

Fire has a diverse range of impacts on Earth's physical and social systems. Accurate and up to date information on areas affected by fire is critical to better understand drivers of fire activity, as well as its relevance for biogeochemical cycles, climate, air quality, and to aid fire management. Mapping burned areas was traditionally done...

Chuvieco, Emilio; Mouillot, Flourent; van der Werf, Guido R.; San Miguel, Jesús; Tanasse, Mihai; Koutsias, Nikos; García, Mariano; Yebra, Marta; Padilla, Marc; Heil, Angelika; Hawbaker, Todd J.; Giglio, Louis

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Year Published: 2019

A hierarchical Bayesian approach for handling missing classification data

Ecologists use classifications of individuals in categories to understand composition of populations and communities. These categories might be defined by demographics, functional traits, or species. Assignment of categories is often imperfect, but frequently treated as observations without error. When individuals are observed but not classified,...

Alison C. Ketz; Therese L. Johnson; Hooten, Mevin; N. Thompson Hobbs

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Year Published: 2019

Geologic map of the Hartsel Quadrangle, Park County, Colorado

The Hartsel quadrangle sits nearly in the center of the complex South Park Laramide structural basin. Generally, the basin can be described as an asymmetrical down-faulted feature, dipping to the east. It is bounded by two northwest-trending uplifts: the Sawatch uplift to the west and the Front Range uplift to the east. The west-verging Elkhorn...

Barkmann, Peter E.; Houck, Karen J.; Dechesne, Marieke; Lovekin, Jonathan R.; Johnson, Erinn P.
Barkmann, Peter E., Karen J. Houck, Marieke Dechesne, Jonathan R. Lovekin, and Erinn P. Johnson. “OF-17-04 Geologic Map of the Hartsel Quadrangle, Park County, Colorado.” Geologic, 1:24,000. Open File Reports. Golden, CO: Colorado Geological Survey, 2019.

Photos and videos described and linked on this webpage come from a wide variety of USGS science activities and presentations performed by USGS Science Center staff members in the Region 7-Upper Colorado Basin.

Filter Total Items: 517
The Needles District, Canyonlands National Park
June 30, 2008

The Needles District, Canyonlands National Park

The Needles District, Canyonlands National Park. 

The Needles District, Canyonlands National Park
June 30, 2008

The Needles District, Canyonlands National Park

The Needles District, Canyonlands National Park

Golden aspen, Jemez Mountains, NM.
December 31, 2007

Golden aspen, Jemez Mountains, NM.

Golden aspen, Jemez Mountains, NM.

Visitor entrance at Colorado Water Science Center
September 19, 2007

CWSC Office - Visitor Entrance

Close-up view of visitor entrance at Building 53; the location of USGS Colorado Water Science Center.

June 28, 2007

PubTalk 6/2007 — Adventures in Southwest Geology

Exploring the colorful southern Colorado Plateau in 3-D

By Philip Stoffer, Geologist

Take a colorful tour with the help of 3-D photography through some of the region's highlights:

  • A plethora of parklands- Petrified Forest, Chaco Canyon, Wupatki, Grand Canyon
  • High desert climate changes, past, present, and
Upper Lebo Member of the Fort Union Formation near Gillette, Wyoming
June 30, 2006

Upper Lebo Member of the Fort Union Formation near Gillette, Wyoming

Upper Lebo Member of the Fort Union Formation. Photo taken fro the top of Cow Creek Buttes in the Burnt Hollow BLM recreation area about 20 miles northeast of Gillette, Wyoming.

Tamarisk growing along a river
April 22, 2006

A single species stand of nonnative tamarisk

Single species stand of nonnative tamarisk on the Lower Colorado River at Cibola National Wildlife Refuge, California

Fire lookout adjacent to snowpack-sampling site near Deadman Pass, Colorado
March 31, 2006

Fire lookout adjacent to snowpack-sampling site near Deadman Pass, Col

Fire lookout adjacent to snowpack-sampling site near Deadman Pass, Colorado

Describing work that USGS does at the Women In Science Conference
October 15, 2004

Describing work that USGS does at the Women In Science Conference

Describing work that USGS does to students at the Women In Science Conference

This page includes links to Social Media accounts (top of page), Science Centers (middle of page), and Regional Office staff members (bottom of page) of the USGS Region 7--Upper Colorado Basin.