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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: 4,858
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Year Published: 2018

Microclimatic gradients provide evidence for a glacial refugium for temperate trees in a sheltered hilly landscape of Northern Italy

AimRefugia play a key role in conserving biodiversity during periods of unfavourable and highly variable regional climate. However, refugial populations are often small and fragmented, which makes their identification difficult. In this study, we investigate whether an area of complex topography in the southern foreland of the Alps could have...

Gubler, Moritz; Henne, Paul D.; Schwörer, Christoph; Boltshauser‐Kaltenrieder, Petra; Lotter, André F.; Brönnimann, Stefan; Tinner, Willy
Gubler, M., Henne, P. D., Schwörer, C., Boltshauser-Kaltenrieder, P., Lotter, A. F., Brönnimann, S., & Tinner, W. (2018). Microclimatic gradients provide evidence for a glacial refugium for temperate trees in a sheltered hilly landscape of Northern Italy. Journal of Biogeography. https://doi.org/10.1111/jbi.13426

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Year Published: 2018

Comment on “The earliest modern humans outside Africa”

Hershkovitz et al. (Reports, 26 January 2018, p. 456) interpreted the Misliya-1 fossil maxilla as evidence of the earliest known anatomically modern human outside Africa. However, the fossil’s reported age of 177,000 to 194,000 years relies on flawed interpretations of uranium-series data. We contend that those data support a minimum age of...

Sharp, Warren D.; Paces, James B.

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Year Published: 2018

Understanding the captivity effect on invertebrate communities transplanted into an experimental stream laboratory

Little is known about how design and testing methodologies affect the macroinvertebrate communities that are held captive in mesocosms. To address this knowledge gap, we conducted a 32‐d test to determine how seeded invertebrate communities changed once removed from the natural stream and introduced to the laboratory. We evaluated larvae survival...

Schmidt, Travis S.; Rogers, Holly; Miller, Janet L.; Mebane, Christopher A.; Balistrieri, Laurie S.
Schmidt, T. S., Rogers, H. A., Miller, J. L., Mebane, C. A. and Balistrieri, L. S. (2018), Understanding the captivity effect on invertebrate communities transplanted into an experimental stream laboratory. Environ Toxicol Chem, 37: 2820-2834. doi:10.1002/etc.4237

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Year Published: 2018

Timing and genesis of ore formation in the Qarachilar Cu-Mo-Au deposit, Ahar-Arasbaran metallogenic zone, NW Iran: Evidence from geology, fluid inclusions, O–S isotopes and Re–Os geochronology

In the Qarachilar Cu-Mo-Au deposit of the Ahar–Arasbaran metallogenic zone (AAMZ), northwest Iran, mineralization occurs as three quartz-sulfide veins that cut granodiorite-quartz monzodiorite rocks of the Qaradagh batholith (QDB). Ore formation can be divided into three stages, with chalcopyrite, molybdenite, and gold-bearing pyrite appearing...

Kouhestani, Hossein; Mokhtari, Mir Ali Asghar; Chang, Zhaoshan; Stein, Holly J.; Johnson, Craig A.
Kouhestani, Hossein, Mokhtari, M.A.A. Chang, Z., Stein, H.J., and Johnson, C.A., 2018, Timing and genesis of ore formation in the Qarachilar Cu‒Mo‒Au deposit, Ahar‒Arasbaran metallogenic zone, NW Iran: Evidence from geology, fluid inclusions, O–S isotopes and Re–Os geochronology: Ore Geology Reviews, v. 102, p. 757-775.

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Year Published: 2018

Establishing chronologies for alluvial-fan sequences with analysis of high-resolution topographic data: San Luis Valley, Colorado, USA

On active alluvial fans, debris-flow deposits and frequent avulsions produce a rough topographic surface. As is the case in many initially rough landforms produced by catastrophic processes, the topography of alluvial fans is progressively smoothed, producing textural differences useful in establishing relative age criteria for fans. Here, we...

Johnstone, Samuel A.; Hudson, Adam M.; Nicovich, Sylvia; Ruleman, Chester A.; Sare, Robert M.; Thompson, Ren A.
Samuel A. Johnstone, Adam M. Hudson, Sylvia Nicovich, Chester A. Ruleman, Robert M. Sare, Ren A. Thompson; Establishing chronologies for alluvial-fan sequences with analysis of high-resolution topographic data: San Luis Valley, Colorado, USA. Geosphere doi: https://doi.org/10.1130/GES01680.1

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Year Published: 2018

Geology and assessment of undiscovered oil and gas resources of the Northern West Siberian Mesozoic Composite Total Petroleum System of the West Siberian Basin Province, Russia, 2008

The West Siberian Basin Province is one of the largest sedimentary basins in the world, with an area of 2.6 million square kilometers, and the basin ranks first in the world with more than 400 billion barrels of oil-equivalent discovered petroleum. For the 2008 Circum-Arctic Resource Appraisal, the U.S. Geological Survey defined a Northern West...

Moore, Thomas E.; Gautier, Donald L.; Schenk, Christopher J.
Schenk, C.J., 2018, Geology and assessment of undiscovered oil and gas resources of the Northern West Siberian Mesozoic Composite Total Petroleum System of the West Siberian Basin Province, Russia, 2008, chap. Q of Moore, T.E., and Gautier, D.L., eds., The 2008 Circum-Arctic Resource Appraisal: U.S. Geological Survey Professional Paper 1824, 26 p., https://doi.org/10.3133/pp1824Q.

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Year Published: 2018

Methodology for correcting bottomhole temperatures acquired from wireline logging measurements in the onshore U.S. Gulf of Mexico Basin to characterize the thermal regime of total petroleum systems

Characterization of the subsurface thermal regime is critical for understanding many facets of the petroleum system, from thermal maturation of organic-rich source rocks to thermal preservation and non-degradation of hydrocarbon accumulations. On a broad scale, paleo-heatflow has been mapped for the North American continent (Blackwell and Richards...

Burke, Lauri A.; Pearson, Ofori N.; Kinney, Scott A.; Pitman, Janet K.
Burke, L.A., Pearson, O.N., Kinney, S.A., and Pitman, J.M., 2018, Methodology for Correcting Bottomhole Temperatures Acquired from Wireline Logging Measurements in the Onshore U.S. Gulf of Mexico Basin to Characterize the Thermal Regime of Total Petroleum Systems: GCAGS Journal, vol. 7, p. 93-106

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Year Published: 2018

Fire, vegetation, and Holocene climate in a southeastern Tibetan lake: a multi-biomarker reconstruction from Paru Co

The fire history of the Tibetan Plateau over centennial to millennial timescales is not well known. Recent ice core studies reconstruct fire history over the past few decades but do not extend through the Holocene. Lacustrine sedimentary cores, however, can provide continuous records of local environmental change on millennial scales during the...

Callergaro, Alice; Battistel, Dario; Kehrwald, Natalie M.; Matsubara Pereira, Felipe; Kirchgeorg, Torben; Villoslada Hidalgo, Maria del Carmen; Bird, Broxton W.; Barbante, Carlo
Callegaro, A., Battistel, D., Kehrwald, N. M., Matsubara Pereira, F., Kirchgeorg, T., Villoslada Hidalgo, M. D. C., Bird, B. W., and Barbante, C.: Fire, vegetation, and Holocene climate in a southeastern Tibetan lake: a multi-biomarker reconstruction from Paru Co, Clim. Past, 14, 1543-1563, https://doi.org/10.5194/cp-14-1543-2018, 2018.

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Year Published: 2018

Application of hydrologic-tracer techniques to the Casargiu adit and Rio Irvi (SW-Sardinia, Italy): Using enhanced natural attenuation to reduce extreme metal loads

Hydrologic tracer techniques were applied to Rio Irvi (SW Sardinia), a stream affected by mine drainage, allowing the calculation of stream discharge and metal loads and comparison to other streams. The calculated discharge showed a continuous increase from near 21.2 L/s to 29.1 L/s. Cumulative loads of mine-related constituents, including the...

De Giudici, Giovanni; Medas, Daniela; Cidu, Rosa; Lattanzi, Pierfranco; Podda, Francesca; Frau, Franco; Rigonat, Nicola; Pusceddu, Claudia; Da Pelo, Stefania; Onnis, Patrizia; Marras, Pier Andrea; Wanty, Richard B.; Kimball, Briant A.
De Giudici, G. Medas, D., Cidu, R., Lattanzi, P., Podda, F., Frau, F., Rigonat, N., Pusceddu, C., Da Pelo, S., Onnis, P., Marras, P.A., Wanty, R.B., Kimball. B., in press. Application of hydrologic-tracer techniques to the Casargiu adit and Rio Irvi (SW-Sardinia, Italy): using enhanced natural attenuation to reduce extreme metal loads. Applied Geochemistry 96, 42-54

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Year Published: 2018

Iron dissolution and speciation in atmospheric mineral dust: Metal-metal synergistic and antagonistic effects

Under acidic atmospheric conditions, iron leached from atmospheric mineral dust may influence the distribution of bioavailable iron at a global scale. However, the effects of non-Fe-containing minerals on iron dissolution remain unknown. This work describes metal-metal synergistic and antagonistic effects on iron dissolution that go beyond...

Hettiarachchi, Eshani; Reynolds, Richard L.; Goldstein, Harland L.; Moskowitz, Bruce M.; Rubasinghege, Gayan

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Year Published: 2018

Flood-inundation maps for the South Platte River at Fort Morgan, Colorado, 2018

In 2017, the U.S. Geological Survey (USGS), in cooperation with the Colorado Water Conservation Board (CWCB), studied floods in the historic record to produce a library of flood-inundation maps for the South Platte River at Fort Morgan, Colorado. Digital flood-inundation maps for a 4.5-mile (7.2-kilometers) reach of the South Platte River at Fort...

Kohn, Michael S.; Patton, Thuy T.
Kohn, M.S., and Patton, T.T., 2018, Flood-inundation maps for the South Platte River at Fort Morgan, Colorado, 2018: U.S. Geological Survey Scientific Investigations Report 2018–5114, 14 p., https://doi.org/10.3133/sir20185114.

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Year Published: 2018

Geologic map of the Osage SW 7.5ʹ quadrangle, Newton, Madison, and Carroll Counties, Arkansas

This map summarizes the geology of the U.S. Geological Survey Osage SW 7.5-minute quadrangle in the Ozark Plateaus region of northern Arkansas. Physiographically, the Osage SW quadrangle is located within a transitional area between the Boston Mountains to the south, and the Springfield Plateau to the north. Geologically, the area is on the...

Turner, Kenzie J.; Hudson, Mark R.
Turner, K.J., and Hudson, M.R., 2018, Geologic map of the Osage SW 7.5' quadrangle, Newton, Madison, and Carroll Counties, Arkansas: U.S. Geological Survey Scientific Investigations Map 3416, scale 1:24,000, https://doi.org/10.3133/sim3416.

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: 515
Image: Colorado Plateau

Colorado Plateau

The Colorado Plateau lies in the Four Corners region of the southwestern United States: western Colorado, northwestern New Mexico, southeastern and eastern Utah, and northern Arizona. Most of the area is drained by the Colorado River and its main tributaries.

Mammoth Hot Springs - Travertine Terraces and Parade Ground Webcam

Yellowstone is a place of change, and this view highlights a place where change is constant and evident—the travertine terraces of Mammoth Hot Springs. Terraces form when water rises through limestone, which then allows the water to carry high amounts of dissolved calcium carbonate. At the surface, carbon dioxide is released and the calcium carbonate is deposited, forming

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Image: Tree-Killing Las Conchas Fire in New Mexico

Tree-Killing Las Conchas Fire in New Mexico

USGS scientist Craig D. Allen observes the results of the extensive, tree-killing fire that consumed almost all above-ground biomass in this part of the Las Conchas Fire burn area in the Jemez Mountains, New Mexico. Photo taken in late August 2011, two months post-fire. Forest drought stress is highly correlated with mortality from poor growth, bark beetle outbreaks, and

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Pecos River Webcam Near Roswell, NM, Site #334716104175400

Pecos River Webcam Near Roswell, NM

Webcam image of the Pecos River near Roswell, New Mexico - Site #334716104175400

Plots of realtime Meteorological conditions at Devil's Thumb site, Colorado

Devil's Thumb Meteorologic site

Realtime snow weather conditions (temperature, relative humidity, wind speed, snow depth) at Devil's Thumb meteorological site in Colorado.
 

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.