A conceptual model of the hydrogeologic framework, geochemistry, and groundwater-flow system of the Edwards-Trinity and related aquifers in the Pecos County region, Texas
Johnathan R. Bumgarner, Gregory P. Stanton, Andrew Teeple, Jonathan V. Thomas, Natalie A. Houston, Jason Payne, MaryLynn Musgrove
2012, Scientific Investigations Report 2012-5124
A conceptual model of the hydrogeologic framework, geochemistry, and groundwater-flow system of the Edwards-Trinity and related aquifers, which include the Pecos Valley, Igneous, Dockum, Rustler, and Capitan Reef aquifers, was developed as the second phase of a groundwater availability study in the Pecos County region in west Texas. The first...
Chesapeake Bay Watershed - Protecting the Chesapeake Bay and its rivers through science, restoration, and partnership
Water Resources Division, U.S. Geological Survey
2012, General Information Product 142
The Chesapeake Bay, the Nation's largest estuary, has been degraded due to the impact of human-population increase, which has doubled since 1950, resulting in degraded water quality, loss of habitat, and declines in populations of biological communities. Since the mid-1980s, the Chesapeake Bay Program (CBP), a multi-agency partnership which includes...
Groundwater flow and water budget in the surficial and Floridan aquifer systems in east-central Florida
Nicasio Sepulveda, Claire R. Tiedeman, Andrew M. O’Reilly, Jeffery B. Davis, Patrick Burger
2012, Open-File Report 2012-1132
A numerical transient model of the surficial and Floridan aquifer systems in east-central Florida was developed to (1) increase the understanding of water exchanges between the surficial and the Floridan aquifer systems, (2) assess the recharge rates to the surficial aquifer system from infiltration through the unsaturated zone and (3)...
Brook trout movement in response to temperature, flow, and thermal refugia within a complex Appalachian riverscape
J. Todd Petty, Jeff L. Hansbarger, Brock M. Huntsman, Patricia M. Mazik
2012, Transactions of the American Fisheries Society (141) 1060-1073
We quantified movements of brook trout Salvelinus fontinalis and brown trout Salmo trutta in a complex riverscape characterized by a large, open-canopy main stem and a small, closed-canopy tributary in eastern West Virginia, USA. Our objectives were to quantify the overall rate of trout movement and relate movement behaviors to...
Characterization of intrabasin faulting and deformation for earthquake hazards in southern Utah Valley, Utah, from high-resolution seismic imaging
William J. Stephenson, Jack K. Odum, Robert A. Williams, John H. McBride, Iris Tomlinson
2012, Bulletin of the Seismological Society of America (102) 524-540
We conducted active and passive seismic imaging investigations along a 5.6-km-long, east–west transect ending at the mapped trace of the Wasatch fault in southern Utah Valley. Using two-dimensional (2D) P-wave seismic reflection data, we imaged basin deformation and faulting to a depth of 1.4 km and developed a detailed interval...
Geologic cross section C-C' through the Appalachian basin from Erie County, north-central Ohio, to the Valley and Ridge province, Bedford County, south-central Pennsylvania
Robert T. Ryder, Michael H. Trippi, Christopher S. Swezey, Robert D. Crangle Jr., Rebecca S. Hope, Elisabeth L. Rowan, Erika E. Lentz
2012, Scientific Investigations Map 3172
Geologic cross section C-C' is the third in a series of cross sections constructed by the U.S. Geological Survey (USGS) to document and improve understanding of the geologic framework and petroleum systems of the Appalachian basin. Cross section C-C' provides a regional view of the structural and stratigraphic framework of...
Development of computational fluid dynamics--habitat suitability (CFD-HSI) models to identify potential passage--Challenge zones for migratory fishes in the Penobscot River
Alexander J. Haro, Robert W. Dudley, Michael Chelminski
2012, Fact Sheet 2012-3073
A two-dimensional computational fluid dynamics-habitat suitability (CFD–HSI) model was developed to identify potential zones of shallow depth and high water velocity that may present passage challenges for five anadromous fish species in the Penobscot River, Maine, upstream from two existing dams and as a result of the proposed future removal...
Exposure and effects of perfluoroalkyl compounds on tree swallows nesting at Lake Johanna in east central Minnesota, USA
Christine M. Custer, Thomas W. Custer, Heiko L. Schoenfuss, Beth H. Poganski, Laura Solem
2012, Reproductive Toxicology (33) 556-562
Tree swallow (Tachycineta bicolor) samples were collected at a reference lake and a nearby lake (Lake Johanna) in east central Minnesota, USA contaminated with perfluorinated carboxylic and sulfonic acids. Tissues were analyzed for a suite of 13 perfluoroalkyl compounds (PFCs) to quantify exposure and to determine if there was an...
An alternative hypothesis for the mid-Paleozoic Antler orogeny in Nevada
Keith B. Ketner
2012, Professional Paper 1790
A great volume of Mississippian orogenic deposits supports the concept of a mid-Paleozoic orogeny in Nevada, and the existence and timing of that event are not questioned here. The nature of the orogeny is problematic, however, and new ideas are called for. The cause of the Antler orogeny, long ascribed...
Evaluation of 3-trifluoromethyl-4-nitrophenol (TFM) residues following a lampricide treatment as a risk assessment to the endangered piping plover
Michael A. Boogaard, Terrance D. Hubert, Jeffry A. Bernardy, Cheryl A. Kaye, Gregg A. Baldwin
2012, Journal of Great Lakes Research (38) 362-367
To evaluate the risk to the federally endangered piping plover (Charadrius melodus) from exposure to 3-trifluoromethyl-4-nitrophenol (TFM) during a sea lamprey control treatment we collected and analyzed a series of water, sediment, and aquatic invertebrate samples for the presence of TFM before, during, and after treatment of the Little Two...
The 2008 U.S. Geological Survey national seismic hazard models and maps for the central and eastern United States
Mark D. Petersen, Arthur D. Frankel, Stephen C. Harmsen, Charles S. Mueller, Oliver S. Boyd, Nicolas Luco, Russell L. Wheeler, Kenneth S. Rukstales, Kathleen M. Haller
2012, GSA Special Papers (493) 246-257
In this paper, we describe the scientific basis for the source and ground-motion models applied in the 2008 National Seismic Hazard Maps, the development of new products that are used for building design and risk analyses, relationships between the hazard maps and design maps used in building codes, and potential...
A 28,000 year history of vegetation and climate from Lower Red Rock Lake, Centennial Valley, Southwestern Montana, USA
Stephanie Ann Mumma, Cathy Whitlock, Kenneth Pierce
2012, Palaeogeography, Palaeoclimatology, Palaeoecology (326-328) 30-41
A sediment core extending to 28,000 cal yr BP from Lower Red Rock Lake in the Centennial Valley of southwestern Montana provides new information on the nature of full-glacial vegetation as well as a history of late-glacial and Holocene vegetation and climate in a poorly studied region. Prior to 17,000...
The Novarupta-Katmai eruption of 1912 - largest eruption of the twentieth century; centennial perspectives
Wes Hildreth, Judy Fierstein
2012, Professional Paper 1791
The explosive outburst at Novarupta (Alaska) in June 1912 was the 20th century's most voluminous volcanic eruption. Marking its centennial, we illustrate and document the complex eruptive sequence, which was long misattributed to nearby Mount Katmai, and how its deposits have provided key insights about volcanic and magmatic processes. It...
Hydrogeology, water chemistry, and transport processes in the zone of contribution of a public-supply well in Albuquerque, New Mexico, 2007-9
Laura M. Bexfield, Bryant C. Jurgens, Dianna M. Crilley, Scott C. Christenson
2012, Scientific Investigations Report 2011-5182
The National Water-Quality Assessment Program (NAWQA) of the U.S. Geological Survey began a series of groundwater studies in 2001 in representative aquifers across the Nation in order to increase understanding of the factors that affect transport of anthropogenic and natural contaminants (TANC) to public-supply wells. One of 10 regional-scale TANC...
Organic geochemistry and petrology of subsurface Paleocene-Eocene Wilcox and Claiborne Group coal beds, Zavala County, Maverick Basin, Texas, USA
Paul C. Hackley, Peter D. Warwick, Robert W. Hook, Hossein Alimi, Maria Mastalerz, Sharon M. Swanson
2012, Organic Geochemistry (46) 137-153
Coal samples from a coalbed methane exploration well in northern Zavala County, Maverick Basin, Texas, were characterized through an integrated analytical program. The well was drilled in February, 2006 and shut in after coal core desorption indicated negligible gas content. Cuttings samples from two levels in the Eocene Claiborne Group...
Land area change analysis following hurricane impacts in Delacroix, Louisiana, 2004--2009
Monica Palaseanu-Lovejoy, Christine J. Kranenburg, John Brock
2012, Scientific Investigations Map 3207
The purpose of this project is to provide improved estimates of Louisiana wetland land loss due to hurricane impacts between 2004 and 2009 based upon a change detection mapping analysis that incorporates pre- and post-landfall (Hurricanes Katrina, Rita, Gustav, and Ike) fractional water classification of a combination of high resolution...
High-resolution geophysical data collected within Red Brook Harbor, Buzzards Bay, Massachusetts, in 2009
Aaron M. Turecek, William W. Danforth, Wayne E. Baldwin, Walter A. Barnhardt
2012, Open-File Report 2010-1091
The U.S. Geological Survey conducted a high-resolution geophysical survey within Red Brook Harbor, Massachusetts, from September 28 through November 17, 2009. Red Brook Harbor is located on the eastern edge of Buzzards Bay, south of the Cape Cod Canal. The survey area was approximately 7 square kilometers, with depths ranging...
Assessment of undiscovered oil and gas resources of the East Coast Mesozoic basins of the Piedmont, Blue Ridge Thrust Belt, Atlantic Coastal Plain, and New England Provinces, 2011
Robert C. Milici, James L. Coleman Jr., Elisabeth L. Rowan, Troy A. Cook, Ronald R. Charpentier, Mark A. Kirschbaum, Timothy R. Klett, Richard M. Pollastro, Christopher J. Schenk
2012, Fact Sheet 2012-3075
During the early opening of the Atlantic Ocean in the Mesozoic Era, numerous extensional basins formed along the eastern margin of the North American continent from Florida northward to New England and parts of adjacent Canada. The basins extend generally from the offshore Atlantic continental margin westward beneath the Atlantic...
Dam-breach analysis and flood-inundation mapping for Lakes Ellsworth and Lawtonka near Lawton, Oklahoma
Samuel H. Rendon, Chad E. Ashworth, S. Jerrod Smith
2012, Scientific Investigations Report 2012-5026
Dams provide beneficial functions such as flood control, recreation, and reliable water supplies, but they also entail risk: dam breaches and resultant floods can cause substantial property damage and loss of life. The State of Oklahoma requires each owner of a high-hazard dam, which the Federal Emergency Management Agency defines...
Habitat use of woodpeckers in the Big Woods of eastern Arkansas
David G. Krementz, Sarah E. Lehnen, J.D. Luscier
2012, Journal of Fish and Wildlife Management (3) 89-97
The Big Woods of eastern Arkansas contain some of the highest densities of woodpeckers recorded within bottomland hardwood forests of the southeastern United States. A better understanding of habitat use patterns by these woodpeckers is a priority for conservationists seeking to maintain these high densities in the Big Woods and...
Effects of lead on Na+, K+-ATPase and hemolymph ion concentrations in the freshwater mussel Elliptio complanata
Shad Mosher, W. Gregory Cope, Frank X. Weber, Damian Shea, Thomas J. Kwak
2012, Environmental Toxicology (27) 268-276
Freshwater mussels are an imperiled fauna exposed to a variety of environmental toxicants such as lead (Pb) and studies are urgently needed to assess their health and condition to guide conservation efforts. A 28-day laboratory toxicity test with Pb and adult Eastern elliptio mussels (Elliptio complanata) was conducted to determine...
Geophysical study of the San Juan Mountains batholith complex, southwestern Colorado
Benjamin J. Drenth, G. Randy Keller, Ren A. Thompson
2012, Geosphere (8) 669-684
One of the largest and most pronounced gravity lows over North America is over the rugged San Juan Mountains of southwestern Colorado (USA). The mountain range is coincident with the San Juan volcanic field (SJVF), the largest erosional remnant of a widespread mid-Cenozoic volcanic field that spanned much of the...
New insights into the nation's carbon storage potential
Peter D. Warwick, Zhi-Liang Zhu
2012, Eos, Transactions, American Geophysical Union (93) 241-242
Carbon sequestration is a method of securing carbon dioxide (CO2) to prevent its release into the atmosphere, where it contributes to global warming as a greenhouse gas. Geologic storage of CO2 in porous and permeable rocks involves injecting high-pressure CO2 into a subsurface rock unit that has available pore space....
Environmental conditions associated with bat white-nose syndrome in the north-eastern United States
Abigail R. Flory, Sunil Kumar, Thomas J. Stohlgren, Paul M. Cryan
2012, Journal of Applied Ecology (49) 680-689
1. White-nose syndrome (WNS) is an emerging disease of hibernating North American bats that is caused by the cold-growing fungus Geomyces destructans. Since first observed in the winter of 2007, WNS has led to unprecedented mortality in several species of bats and may threaten more than 15 additional hibernating bat...
Analyzing legacy U.S. Geological Survey geochemical databases using GIS: applications for a national mineral resource assessment
Douglas B. Yager, Albert H. Hofstra, Matthew Granitto
2012, Techniques and Methods 11-C5
This report emphasizes geographic information system analysis and the display of data stored in the legacy U.S. Geological Survey National Geochemical Database for use in mineral resource investigations. Geochemical analyses of soils, stream sediments, and rocks that are archived in the National Geochemical Database provide an extensive data source for...
