Magnetotelluric survey to locate the Archean-Proterozoic suture zone in the northeastern Great Basin, Nevada, Utah, and Idaho
Jay A. Sampson, Brian D. Rodriguez
2013, Open-File Report 2013-1252
North-central Nevada contains a large amount of gold in linear belts, the origin of which is not fully understood. During July 2008, September 2009, and August 2010, the U.S. Geological Survey, as part of the Assessment Techniques for Concealed Mineral Resources project, collected twenty-three magnetotelluric soundings along two profiles in...
Bedrock geologic and joint trend map of the Pinardville quadrangle, Hillsborough County, New Hampshire
William C. Burton, Thomas R. Armstrong
2013, Open-File Report 2013-1027
The bedrock geology of the Pinardville quadrangle includes the Massabesic Gneiss Complex, exposed in the core of a regional northeast-trending anticlinorium, and highly deformed metasedimentary rocks of the Rangeley Formation, exposed along the northwest limb of the anticlinorium. Both formations were subjected to high-grade metamorphism and partial melting: the Rangeley...
Geologic map of the Mount Sherman 7.5' quadrangle, Lake and Park Counties, Colorado
Robert G. Bohannon, Chester A. Ruleman
2013, Scientific Investigations Map 3271
The Mount Sherman 7.5- minute quadrangle is located along the crest of the Mosquito Range in between Leadville and Fairplay, Colorado. There are eleven 13,000-foot peaks and one fourteener, Mount Sherman, within the quadrangle. General elevations range from 10,400–14,036 feet (3,200–4,278 meters). The western half of the quadrangle primarily consists...
Crustal-scale recycling in caldera complexes and rift zones along the Yellowstone hotspot track: O and Hf isotopic evidence in diverse zircons from voluminous rhyolites of the Picabo volcanic field, Idaho
Dana L. Drew, Ilya N. Bindeman, Kathryn E. Watts, Axel K. Schmitt, Bin Fu, Michael McCurry
2013, Earth and Planetary Science Letters (381) 63-77
Rhyolites of the Picabo volcanic field (10.4–6.6 Ma) in eastern Idaho are preserved as thick ignimbrites and lavas along the margins of the Snake River Plain (SRP), and within a deep (>3 km) borehole near the central axis of the Yellowstone hotspot track. In this study we present new O...
Spatial, seasonal, and source variability in the stable oxygen and hydrogen isotopic composition of tap waters throughout the USA
Jurate M. Landwehr, Tyler B. Coplen, David W. Stewart
2013, Hydrological Processes
To assess spatial, seasonal, and source variability in stable isotopic composition of human drinking waters throughout the entire USA, we have constructed a database of δ18O and δ2H of US tap waters. An additional purpose was to create a publicly available dataset useful for evaluating the forensic applicability of these...
The North American Breeding Bird Survey 1966–2011: Summary analysis and species accounts
John R. Sauer, William A. Link, Jane E. Fallon, Keith L. Pardieck, David J. Ziolkowski
2013, North American Fauna (79) 1-32
The North American Breeding Bird Survey is a roadside, count-based survey conducted by volunteer observers. Begun in 1966, it now is a primary source of information on spatial and temporal patterns of population change for North American birds. We analyze population change for states, provinces, Bird Conservation Regions, and the...
A hierarchical nest survival model integrating incomplete temporally varying covariates
Sarah J. Converse, J. Andrew Royle, Peter H. Adler, Richard P. Urbanek, Jeb A. Barzan
2013, Ecology and Evolution (3) 4439-4447
Nest success is a critical determinant of the dynamics of avian populations, and nest survival modeling has played a key role in advancing avian ecology and management. Beginning with the development of daily nest survival models, and proceeding through subsequent extensions, the capacity for modeling the effects of hypothesized factors...
Characterization of cyanophyte biomass in a Bureau of Reclamation reservoir
Nancy S. Simon, Ahmad Abdul Ali, Kyle Michael Samperton, Charles S. Korson, Kris Fischer, Michael L. Hughes
2013, Open-File Report 2013-1156
The purpose of this study was to characterize the cyanophyte Aphanizomenon flos-aquae (AFA) from Upper Klamath Lake, Oregon, (UKL) and, based on this description, explore uses for AFA, which would have commercial value. AFA collected from UKL in 2010 from eight sites during a period of approximately 2 weeks were...
Geophysical constraints on Rio Grande rift structure in the central San Luis Basin, Colorado and New Mexico
Benjamin J. Drenth, V. J. Grauch, Brian D. Rodriguez
2013, GSA Special Papers (494) 75-99
Interpretation of gravity, aeromagnetic, and magnetotelluric (MT) data reveals patterns of rifting, rift-sediment thicknesses, distribution of pre-rift volcanic and sedimentary rocks, and distribution of syn-rift volcanic rocks in the central San Luis...
Geochemical and mineralogical data for soils of the conterminous United States
David B. Smith, William F. Cannon, Laurel G. Woodruff, Federico Solano, James E. Kilburn, David L. Fey
2013, Data Series 801
In 2007, the U.S. Geological Survey initiated a low-density (1 site per 1,600 square kilometers, 4,857 sites) geochemical and mineralogical survey of soils of the conterminous United States as part of the North American Soil Geochemical Landscapes Project. Sampling and analytical protocols were developed at a workshop in 2003, and...
Postwildfire debris-flow hazard assessment of the area burned by the 2013 West Fork Fire Complex, southwestern Colorado
Kristine L. Verdin, Jean A. Dupree, Michael R. Stevens
2013, Open-File Report 2013-1259
This report presents a preliminary emergency assessment of the debris-flow hazards from drainage basins burned by the 2013 West Fork Fire Complex near South Fork in southwestern Colorado. Empirical models derived from statistical evaluation of data collected from recently burned basins throughout the intermountain western United States were used to...
The late Holocene dry period: multiproxy evidence for an extended drought between 2800 and 1850 cal yr BP across the central Great Basin, USA
Scott A. Mensing, Saxon E. Sharpe, Irene Tunno, Don W. Sada, Jim M. Thomas, Scott W. Starratt, Jeremy Smith
2013, Quaternary Science Reviews (78) 266-282
Evidence of a multi-centennial scale dry period between ∼2800 and 1850 cal yr BP is documented by pollen, mollusks, diatoms, and sediment in spring sediments from Stonehouse Meadow in Spring Valley, eastern central Nevada, U.S. We refer to this period as the Late Holocene Dry Period. Based on sediment recovered,...
Hurricane Sandy science plan: coastal topographic and bathymetric data to support hurricane impact assessment and response
Jakob M. Stronko
2013, Fact Sheet 2013-3099
Hurricane Sandy devastated some of the most heavily populated eastern coastal areas of the Nation. With a storm surge peaking at more than 19 feet, the powerful landscape-altering destruction of Hurricane Sandy is a stark reminder of why the Nation must become more resilient to coastal hazards. In response to...
Hurricane Sandy science plan: impacts of environmental quality and persisting contaminant exposure
Sarah A. Caskie
2013, Fact Sheet 2013-3091
Hurricane Sandy devastated some of the most heavily populated eastern coastal areas of the Nation. With a storm surge peaking at more than 19 feet, the powerful landscape-altering destruction of Hurricane Sandy is a stark reminder of why the Nation must become more resilient to coastal hazards. In response to...
Hurricane Sandy science plan: impacts to coastal ecosystems, habitats, and fish and wildlife
Warren H. Campbell
2013, Fact Sheet 2013-3096
Hurricane Sandy devastated some of the most heavily populated eastern coastal areas of the Nation. With a storm surge peaking at more than 19 feet, the powerful landscape-altering destruction of Hurricane Sandy is a stark reminder of why the Nation must become more resilient to coastal hazards. In response to...
Hurricane Sandy science plan: coastal impact assessments
Jakob M. Stronko
2013, Fact Sheet 2013-3090
Hurricane Sandy devastated some of the most heavily populated eastern coastal areas of the Nation. With a storm surge peaking at more than 19 feet, the powerful landscape-altering destruction of Hurricane Sandy is a stark reminder of why the Nation must become more resilient to coastal hazards. In response to...
Hurricane Sandy science plan: impacts of storm surge, including disturbed estuarine and bay hydrology
Sarah A. Caskie
2013, Fact Sheet 2013-3092
Hurricane Sandy devastated some of the most heavily populated eastern coastal areas of the Nation. With a storm surge peaking at more than 19 feet, the powerful landscape-altering destruction of Hurricane Sandy is a stark reminder of why the Nation must become more resilient to coastal hazards. In response to...
Can shale safely host US nuclear waste?
C. E. Neuzil
2013, Eos, Transactions, American Geophysical Union (94) 261-262
"Even as cleanup efforts after Japan’s Fukushima disaster offer a stark reminder of the spent nuclear fuel (SNF) stored at nuclear plants worldwide, the decision in 2009 to scrap Yucca Mountain as a permanent disposal site has dimmed hope for a repository for SNF and other high-level nuclear waste (HLW)...
Geologic map of the Washougal quadrangle, Clark County, Washington, and Multnomah County, Oregon
Russell C. Evarts, Jim E. O'Connor, Terry L. Tolan
2013, Scientific Investigations Map 3257
The Washougal 7.5’ quadrangle spans the boundary between the Portland Basin and the Columbia River Gorge, approximately 30 km east of Portland, Oregon. The map area contains the westernmost portion of the Columbia River Gorge National Scenic area as well as the rapidly growing areas surrounding the Clark County, Washington,...
Rangewide glaciation in the Sierra Nevada, California
James G. Moore, Barry C. Moring
2013, Geosphere (9) 1804-1818
The 600-km-long Sierra Nevada underwent extensive Pleistocene glaciation except for its southernmost 100 km. Presently, ∼1700 small glaciers and ice masses near the crest of the range occur above 3250 m in elevation; these covered an area of ∼50 km2 in 1972. Fourteen of the largest glaciers decreased by about one...
Implications of the miocene(?) crooked ridge river of northern arizona for the evolution of the colorado river and grand canyon
Ivo Lucchitta, Richard F. Holm, Baerbel K. Lucchitta
2013, Geosphere (9) 1417-1433
The southwesterly course of the probably pre–early Miocene and possibly Oligocene Crooked Ridge River can be traced continuously for 48 km and discontinuously for 91 km in northern Arizona (United States). The course is visible today in inverted relief. Pebbles in the river gravel came from at least as far...
Rates and probable causes of freshwater tidal marsh failure, Potomac River Estuary, Northern Virginia, USA
Ronald J. Litwin, Joseph P. Smoot, Milan J. Pavich, Helaine W. Markewich, Erik T. Oberg, Brent W. Steury, Ben Helwig, Vincent L. Santucci, Geoffrey Sanders
2013, Wetlands (33) 1037-1061
Dyke Marsh, a distal tidal marsh along the Potomac River estuary, is diminishing rapidly in areal extent. This study documents Dyke Marsh erosion rates from the early-1860s to the present during pre-mining, mining, and post-mining phases. From the late-1930s to the mid-1970s, Dyke Marsh and the adjacent shallow riverbottom were...
Analysis of Neogene deformation between Beaver, Utah and Barstow, California: Suggestions for altering the extensional paradigm
R. Ernest Anderson, Sue Beard, Edward A. Mankinen, John W. Hillhouse
2013, Geological Society of America Special Papers (499) 1-67
For more than two decades, the paradigm of large-magnitude (~250 km), northwest-directed (~N70°W) Neogene extensional lengthening between the Colorado Plateau and Sierra Nevada at the approximate latitude of Las Vegas has remained largely unchallenged, as has the notion that the strain integrates with coeval strains in adjacent regions and with...
Temporal dynamics of biogeochemical processes at the Norman Landfill site
Bhavna Arora, Binayak P. Mohanty, Jennifer T. McGuire, Isabelle M. Cozzarelli
2013, Water Resources Research (49) 6909-6926
The temporal variability observed in redox sensitive species in groundwater can be attributed to coupled hydrological, geochemical, and microbial processes. These controlling processes are typically nonstationary, and distributed across various time scales. Therefore, the purpose of this study is to investigate biogeochemical data sets from a municipal landfill site to...
Quaternary extensional growth folding beneath Reno, Nevada, imaged by urban seismic profiling
William J. Stephenson, Roxy N. Frary, John Louie, Jackson K. Odum
2013, Bulletin of the Seismological Society of America (103) 2921-2927
We characterize shallow subsurface faulting and basin structure along a transect through heavily urbanized Reno, Nevada, with high‐resolution seismic reflection imaging. The 6.8 km of P‐wave data image the subsurface to approximately 800 m depth and delineate two subbasins and basin uplift that are consistent with structure previously inferred from...
