Distributional patterns of arsenic concentrations in contaminant plumes offer clues to the source of arsenic in groundwater at landfills
Philip T. Harte
2015, Remediation Journal (24) 69-75
The distributional pattern of dissolved arsenic concentrations from landfill plumes can provide clues to the source of arsenic contamination. Under simple idealized conditions, arsenic concentrations along flow paths in aquifers proximal to a landfill will decrease under anthropogenic sources but potentially increase under in situ sources. This paper presents several...
Bioenergetics modeling of percid fishes
Charles P. Madenjian
Patrick Kestemont, Konrad Dabrowski, Robert C. Summerfelt, editor(s)
2015, Book chapter, Biology and culture of percid fishes
A bioenergetics model for a percid fish represents a quantitative description of the fish’s energy budget. Bioenergetics modeling can be used to identify the important factors determining growth of percids in lakes, rivers, or seas. For example, bioenergetics modeling applied to yellow perch (Perca flavescens) in the western...
The Yellowstone “hot spot” track results from migrating basin-range extension
Gillian R. Foulger, Robert L. Christiansen, Don L. Anderson
Gillian R. Foulger, Michele Lustrino, Scott D. King, editor(s)
2015, Book chapter, The interdisciplinary earth: A volume in honor of Don L. Anderson (GSA Special Papers volume 514)
Whether the volcanism of the Columbia River Plateau, eastern Snake River Plain, and Yellowstone (western U.S.) is related to a mantle plume or to plate tectonic processes is a long-standing controversy. There are many geological mismatches with the basic plume model as well as logical flaws, such as citing data...
The Southern Piedmont’s continued land-use evolution, 1973–2011
Roger F. Auch, Darrell E. Napton, Kristi L. Sayler, Mark A. Drummond, Steven Kambly, Daniel G. Sorenson
2015, Southeastern Geographer (55) 338-361
The southern Piedmont in the U.S. was an important farming region during the 19th century, but by the end of the 20th century, agricultural land use had decreased substantially with forest becoming the majority land cover by the 1970s. Geographical literature has documented this change but has not concentrated on...
Tsunami geology in paleoseismology
Yuichi Nishimura, Bruce E. Jaffe
2015, Report, The Contribution of Palaeoseismology to Seismic Hazard Assessment in Site Evaluation for Nuclear Installations
The 2004 Indian Ocean and 2011 Tohoku-oki disasters dramatically demonstrated the destructiveness and deadliness of tsunamis. For the assessment of future risk posed by tsunamis it is necessary to understand past tsunami events. Recent work on tsunami deposits has provided new information on paleotsunami events, including their recurrence interval and...
2014 National Park visitor spending effects: economic contributions to local communities, states, and the nation
Catherine Cullinane Thomas, Christopher Huber, Lynne Koontz
2015, Natural Resource Report NPS/NRSS/EQD/NRR—2015/947
The National Park System covers more than 84 million acres and is comprised of more than 401 sites across the Nation. These lands managed by the National Park Service (NPS) serve as recreational destinations for visitors from across the Nation and around the world. On vacations or on day trips,...
Fisheries research and monitoring activities of the Lake Erie Biological Station, 2014
Betsy L. Bodamer Scarbro, William Edwards, Carrie Gawne, Patrick M. Kocovsky, Richard T. Kraus, Mark W. Rogers, Taylor Stewart
2015, Report, Compiled reports to the Great Lakes Fishery commission of the annual bottom trawl and acoustics surveys, 2014
In 2014, the USGS LEBS successfully completed large vessel surveys in all three of Lake Erie’s basins. Lake Erie Biological Station’s primary vessel surveys included the Western Basin Forage Fish Assessment and East Harbor Forage Fish Assessment as well as contributing to the cooperative multi-agency Central Basin Hydroacoustics Assessment, the...
Examining the utility of bulk otolith δ13C to describe diet in wild-caught black rockfish Sebastes melanops
Vanessa R. von Biela, Seth D. Newsome, Christian E. Zimmerman
2015, Aquatic Biology (23) 201-208
Otolith carbon isotope δ13C values may provide temporally resolved diet proxies in fish. If otolith δ13C values reflect diet, isotope values from recent otolith and muscle tissue should correlate and known ontogenetic diet shifts should be reflected in comparisons between otolith material deposited during different life history stages. We analyzed...
Mineral potential for sediment-hosted copper deposits in the Islamic Republic of Mauritania (phase V, deliverable 75)
Cliff D. Taylor, Stuart A. Giles
2015, Open-File Report 2013-1280-K
The presence of Neoproterozoic through Cambrian, continental, siliciclastic sedimentary rocks interbedded with dolomitic carbonates, shales, and glacial tillites similar to the Katanga Supergroup host rocks of the Central African Copperbelt and other sediment-hosted copper-bearing Proterozoic sequences worldwide, is first order criteria for consideration of the Neoproterozoic units of the Taoudeni...
Cenozoic stratigraphy and structure of the Chesapeake Bay region
David S. Powars, Lucy E. Edwards, Susan M. Kidwell, J. Stephen Schindler
2015, Book
The Salisbury embayment is a broad tectonic downwarp that is filled by generally seaward-thickening, wedge-shaped deposits of the central Atlantic Coastal Plain. Our two-day field trip will take us to the western side of this embayment from the Fall Zone in Washington, D.C., to some of the bluffs along Aquia...
Preface
J. Wright Horton Jr., Martin C. Chapman, Russell A. Green
2015, Geological Society of America Special Papers (509) vii-vii
This book grew out of a topical session on “Central Virginia Earthquakes of 2011: Geology, Geophysics, and Significance for Seismic Hazards in Eastern North America” at the 2012 The Geological Society of America (GSA) Annual Meeting in Charlotte, North Carolina (USA). It also benefitted from related sessions...
The origin of Mauna Loa's Nīnole Hills: Evidence of rift zone reorganization
Jeffrey Zurek, Glyn Williams-Jones, Frank A. Trusdell, Simon Martin
2015, Geophysical Research Letters (42) 8358-8366
In order to identify the origin of Mauna Loa volcano's Nīnole Hills, Bouguer gravity was used to delineate density contrasts within the edifice. Our survey identified two residual anomalies beneath the Southwest Rift Zone (SWRZ) and the Nīnole Hills. The Nīnole Hills anomaly is elongated, striking northeast, and in inversions...
Impacts of fire management on aboveground tree carbon stocks in Yosemite and Sequoia & Kings Canyon National Parks
John R. Matchett, James A. Lutz, Leland W. Tarnay, Douglas G. Smith, Kendall M.L. Becker, Matthew L. Brooks
2015, Report, Natural Resource Report NPS/SIEN/NRR—2015/910
Forest biomass on Sierra Nevada landscapes constitutes one of the largest carbon stocks in California, and its stability is tightly linked to the factors driving fire regimes. Research suggests that fire suppression, logging, climate change, and present management practices in Sierra Nevada forests have altered historic patterns of landscape carbon...
Evaluation of vector coastline features extracted from 'structure from motion'-derived elevation data
Nicole Kinsman, Ann E. Gibbs, Matt Nolan
2015, Conference Paper, Proceedings of the Coastal Sediments 2015
For extensive and remote coastlines, the absence of high-quality elevation models—for example, those produced with lidar—leaves some coastal populations lacking one of the essential elements for mapping shoreline positions or flood extents. Here, we compare seven different elevation products in a lowlying area in western Alaska to establish their appropriateness...
To predict the niche, model colonization and extinction
Charles B. Yackulic, James D. Nichols, Janice Reid, Ricky Der
2015, Ecology (96) 16-23
Ecologists frequently try to predict the future geographic distributions of species. Most studies assume that the current distribution of a species reflects its environmental requirements (i.e., the species' niche). However, the current distributions of many species are unlikely to be at equilibrium with the current distribution of environmental conditions, both...
Permissive tracts for sediment-hosted lead-zinc-silver deposits in the Islamic Republic of Mauritania (phase V, deliverable 73)
Jeffrey L. Mauk
2015, Open-File Report 2013-1280-J
Although Mississippi Valley-type (MVT) deposits have not been recognized in Mauritania there are permissive tracts for these deposits in the regionally extensive Proterozoic carbonate rocks of the Taoudeni Basin. Permissive tracts for undiscovered MVT Pb-Zn-Ag deposits in the Proterozoic carbonate units are supported by the occurrences of MVT mineral and...
Algoma-, Superior-, and oolitic-type iron deposits of the Islamic Republic of Mauritania (phase V, deliverable 83)
Cliff D. Taylor, Carol A. Finn, Eric D. Anderson, M. Y. Joud, M. A. Taleb, John D. Horton
2015, Open-File Report 2013-1280-O
High-grade hematitic iron ores (or HIF, containing 60–65 percent Fe) have been mined in Mauritania from Superior-type iron deposits since 1952. Depletion of the high grade ores in recent years has resulted in a number of new projects focused on lower grade magnetite ores in Algoma-type banded iron formation (or...
Mineral potential for volcanogenic massive sulfide deposits in the Islamic Republic of Mauritania, (phase V, deliverable 77)
Cliff D. Taylor, Stuart A. Giles
2015, Open-File Report 2013-1280-L
Potential for base- and precious-metal-bearing volcanogenic massive sulfide deposits (VMS) exists in Mauritania in the greenstone belts of the southwestern Rgueïbat Shield and in the allochthonous portions of the central and southern Mauritanides. Additional potential exists for VMS deposits within the Tiris Complex of the central Rgueïbat Shield. Volcanosedimentary successions...
Onset of a basaltic explosive eruption from Kīlauea’s summit in 2008
Rebecca J. Carey, Lauren Swavely, Don Swanson, Bruce F. Houghton, Tim R. Orr, Tamar Elias, Andrew Sutton
Rebecca Carey, Valerie Cayol, Michael P. Poland, Dominique Weis, editor(s)
2015, Book chapter, Hawaiian volcanoes: From source to surface
The onset of a basaltic eruption at the summit of Kīlauea volcano in 2008 is recorded in the products generated during the first three weeks of the eruption and suggests an evolution of both the physical properties of the magma and also lava lake levels and vent wall stability. Ash...
High‐resolution trench photomosaics from image‐based modeling: Workflow and error analysis
Nadine G. Reitman, Scott E.K. Bennett, Ryan D. Gold, Richard W. Briggs, Christopher B. DuRoss
2015, Bulletin of the Seismological Society of America (105) 2354-2366
Photomosaics are commonly used to construct maps of paleoseismic trench exposures, but the conventional process of manually using image‐editing software is time consuming and produces undesirable artifacts and distortions. Herein, we document and evaluate the application of image‐based modeling (IBM) for creating photomosaics and 3D models of paleoseismic trench exposures,...
Structural superposition in fault systems bounding Santa Clara Valley, California
Russell W. Graymer, Richard G. Stanley, David A. Ponce, Robert C. Jachens, Robert W. Simpson, Carl M. Wentworth
2015, Geosphere (11) 63-75
Santa Clara Valley is bounded on the southwest and northeast by active strike-slip and reverse-oblique faults of the San Andreas fault system. On both sides of the valley, these faults are superposed on older normal and/or right-lateral normal oblique faults. The older faults comprised early components of the San Andreas...
Kinematics of shallow backthrusts in the Seattle fault zone, Washington State
Thomas L. Pratt, K.G. Troost, Jackson K. Odum, William J. Stephenson
2015, Geosphere (11) 1948-1974
Near-surface thrust fault splays and antithetic backthrusts at the tips of major thrust fault systems can distribute slip across multiple shallow fault strands, complicating earthquake hazard analyses based on studies of surface faulting. The shallow expression of the fault strands forming the Seattle fault zone of Washington State shows the...
On-line hydrogen-isotope measurements of organic samples using elemental chromium: An extension for high temperature elemental-analyzer techniques
Matthias Gehre, Julian Renpenning, Tetyana Gilevska, Haiping Qi, Tyler B. Coplen, Harro A.J. Meijer, Willi A. Brand, Arndt Schimmelmann
2015, Analytical Chemistry (87) 5198-5205
The high temperature conversion (HTC) technique using an elemental analyzer with a glassy carbon tube and filling (temperature conversion/elemental analysis, TC/EA) is a widely used method for hydrogen isotopic analysis of water and many solid and liquid organic samples with analysis by isotope-ratio mass spectrometry (IRMS). However, the TC/EA IRMS...
Validation of geometric accuracy of Global Land Survey (GLS) 2000 data
Rajagopalan Rengarajan, Aparajithan Sampath, James C. Storey, Mike Choate
2015, Photogrammetric Engineering and Remote Sensing (2) 131-141
The Global Land Survey (GLS) 2000 data were generated from Geocover™ 2000 data with the aim of producing a global data set of accuracy better than 25 m Root Mean Square Error (RMSE). An assessment and validation of accuracy of GLS 2000 data set, and its co-registration with Geocover™ 2000...
Determination of (4-methylcyclohexyl)methanol isomers by heated purge-and-trap GC/MS in water samples from the 2014 Elk River, West Virginia, chemical spill
William T. Foreman, Donna L. Rose, Douglas B. Chambers, Angela S. Crain, Lucinda K. Murtagh, Haresh Thakellapalli, Kung K. Wang
2015, Chemosphere (131) 217-224
A heated purge-and-trap gas chromatography/mass spectrometry method was used to determine the cis- and trans-isomers of (4-methylcyclohexyl)methanol (4-MCHM), the reported major component of the Crude MCHM/Dowanol™ PPh glycol ether material spilled into the Elk River upriver from Charleston, West Virginia, on January 9, 2014. The trans-isomer eluted first and method...
