Porphyry copper assessment of Central America and the Caribbean Basin
Floyd Gray, Jane M. Hammarstrom, Stephen Ludington, Lukas Zürcher, Carl E. Nelson, Gilpin R. Robinson Jr., Robert J. Miller, Barry C. Moring
2014, Scientific Investigations Report 2010-5090-I
Mineral resource assessments provide a synthesis of available information about distributions of mineral deposits in the Earth’s crust. The U.S. Geological Survey prepared a probabilistic mineral resource assessment of undiscovered resources in porphyry copper deposits in Central America and the Caribbean Basin in collaboration with geoscientists from academia and the...
Monitoring of wild fish health at selected sites in the Great Lakes Basin: methods and preliminary results
Vicki Blazer, Patricia M. Mazik, Luke R. Iwanowicz, Ryan Braham, Cassidy Hahn, Heather L. Walsh, Adam Sperry
2014, Open-File Report 2014-1027
During fall 2010 and spring 2011, a total of 119 brown bullhead (Ameiurus nebulosus), 136 white sucker (Catostomus commersoni), 73 smallmouth bass (Micropterus dolomieu), and 59 largemouth bass (M. salmoides) were collected from seven Great Lakes Basin Areas of Concern and one Reference Site. Comprehensive fish health assessments were conducted...
2013 update on sea otter studies to assess recovery from the 1989 Exxon Valdez oil spill, Prince William Sound, Alaska
Brenda E. Ballachey, Daniel H. Monson, George G. Esslinger, Kimberly A. Kloecker, James L. Bodkin, Lizabeth Bowen, A. Keith Miles
2014, Open-File Report 2014-1030
On March 24, 1989, the tanker vessel Exxon Valdez ran aground in Prince William Sound, Alaska, spilling an estimated 42 million liters of Prudhoe Bay crude oil. Oil spread in a southwesterly direction and was deposited on shores and waters in western Prince William Sound (WPWS). The sea otter (Enhydra...
Modifications made to ModelMuse to add support for the Saturated-Unsaturated Transport model (SUTRA)
Richard B. Winston
2014, Techniques and Methods 6-A49
This report (1) describes modifications to ModelMuse,as described in U.S. Geological Survey (USGS) Techniques and Methods (TM) 6–A29 (Winston, 2009), to add support for the Saturated-Unsaturated Transport model (SUTRA) (Voss and Provost, 2002; version of September 22, 2010) and (2) supplements USGS TM 6–A29. Modifications include changes to the main...
Logs and data from trenches across the Berryessa Fault at the Jerd Creek site, northeastern Napa County, California, 2011-2012
James J. Lienkaemper, Carla M. Rosa, Ian J. Cappelle, Evan M. Wolf, Nichole E. Knepprath, Lucille A. Piety, Sarah A. Derouin, Liam M. Reidy, Joanna L. Redwine, Robert R. Sickler
2014, Open-File Report 2014-1033
The primary purpose of this report is to provide drafted field logs of exploratory trenches excavated across the Berryessa Fault section of the northern Green Valley Fault (Lienkaemper, 2012; Lienkaemper and others, 2013) in 2011 and 2012 that show evidence for at least one surface-rupturing earthquake in the past few...
Assessment of undiscovered sandstone copper deposits of the Kodar-Udokan area, Russia
Michael L. Zientek, Vladimir S. Chechetkin, Heather L. Parks, Stephen E. Box, Deborah A. Briggs, Pamela M. Cossette, Alla Dolgopolova, Timothy S. Hayes, Reimar Seltmann, Boris Syusyura, Cliff D. Taylor, Niki E. Wintzer
2014, Scientific Investigations Report 2010-5090-M
Mineral resource assessments integrate and synthesize available information as a basis for estimating the location, quality, and quantity of undiscovered mineral resources. This probabilistic mineral resource assessment of undiscovered sandstone copper deposits within Paleoproterozoic metasedimentary rocks of the Kodar-Udokan area in Russia is a contribution to a global assessment led...
Precipitation variability of the Grand Canyon region, 1893 through 2009, and its implications for studying effects of gullying of Holocene terraces and associated archeological sites in Grand Canyon, Arizona
Richard Hereford, Glenn E. Bennett, Helen C. Fairley
2014, Open-File Report 2014-1006
A daily precipitation dataset covering a large part of the American Southwest was compiled for online electronic distribution (http://pubs.usgs.gov/of/2014/1006/). The dataset contains 10.8 million observations spanning January 1893 through January 2009 from 846 weather stations in six states and 13 climate divisions. In addition to processing the data...
Assessing risks to humans from invasive Burmese pythons in Everglades National Park, Florida, USA
Robert N. Reed, Ray W. Snow
2014, Wildlife Society Bulletin
Invasive Burmese pythons (Python molurus bivittatus) are now established across a large area of southern Florida, USA, including all of Everglades National Park (NP). The presence of these large-bodied snakes in the continental United States has attracted intense media attention, including regular reference to the possibility of these snakes preying...
Estimate of undiscovered copper resources of the world, 2013
Kathleen M. Johnson, Jane M. Hammarstrom, Michael L. Zientek, Connie L. Dicken
2014, Fact Sheet 2014-3004
Using a geology-based assessment methodology, the U.S. Geological Survey estimated a mean of 3,500 million metric tons (Mt) of undiscovered copper among 225 tracts around the world. Annual U.S. copper consumption is 2 Mt; global consumption is 20 Mt. The USGS assessed undiscovered copper in two deposit types that account...
Mean annual, seasonal, and monthly precipitation and runoff in Arkansas, 1951-2011
Aaron L. Pugh, Drew A. Westerman
2014, Scientific Investigations Report 2014-5006
This report describes long-term annual, seasonal, and monthly means for precipitation and runoff in Arkansas for the period from 1951 through 2011. Precipitation means were estimated using data from the Parameter-elevation Regressions on Independent Slopes Model database; while total runoff, groundwater runoff, and surface runoff means were estimated using data...
Photomosaics and event evidence from the Frazier Mountain paleoseismic site, trench 1, cuts 1–4, San Andreas Fault Zone, southern California (2007–2009)
Katherine M. Scharer, Tom E. Fumal, Ray J. Weldon II, Ashley R. Streig
2014, Open-File Report 2014-1002
The Frazier Mountain paleoseismic site is located at the northwest end of the Mojave section of the San Andreas Fault, in a small, closed depression at the base of Frazier Mountain near Tejon Pass, California (lat 34.8122° N., long 118.9034° W.). The site was known to contain a good record...
Daytime avoidance of chemosensory alarm cues by adult sea lamprey (Petromyzon marinus)
Richard Di Rocco, Cowan Belanger, István Imre, Grant Brown, Nicholas S. Johnson
2014, Canadian Journal of Fisheries and Aquatic Sciences 824-830
Sea lamprey (Petromyzon marinus) avoid damage-released and predator chemosensory cues at night, but their response to these cues during the day is unknown. Here, we explored (i) whether sea lamprey avoid these cues during the day and (ii) the effect of water temperature on the avoidance of chemosensory alarm cues...
Groundwater quality at Alabama Plating and Vincent Spring, Vincent, Alabama, 2007–2008
Mike Bradley, Amy C. Gill
2014, Open-File Report 2013-1298
The former Alabama Plating site in Vincent, Alabama, includes the location where the Alabama Plating Company operated an electroplating facility from 1956 until 1986. The operation of the facility generated waste containing cyanide, arsenic, cadmium, chromium, copper, lead, zinc, and other heavy metals. Contamination resulting from the site operations was...
Geologic map of the Ute Mountain 7.5' quadrangle, Taos County, New Mexico, and Conejos and Costilla Counties, Colorado
Ren A. Thompson, Kenzie J. Turner, Ralph R. Shroba, Michael A. Cosca, Chester A. Ruleman, John P. Lee, Theodore R. Brandt
2014, Scientific Investigations Map 3284
The Ute Mountain 7.5' quadrangle is located in the south-central part of the San Luis Basin of northern New Mexico, in the Rio Grande del Norte National Monument, and contains deposits that record volcanic, tectonic, and associated alluvial and colluvial processes over the past four million years. Ute Mountain has...
Geologic map of the Sunshine 7.5' quadrangle, Taos County, New Mexico
Ren A. Thompson, Kenzie J. Turner, Ralph R. Shroba, Michael A. Cosca, Chester A. Ruleman, John P. Lee, Theodore R. Brandt
2014, Scientific Investigations Map 3283
The Sunshine 7.5' quadrangle is located in the south-central part of the San Luis Basin of northern New Mexico, in the Rio Grande del Norte National Monument, and contains deposits that record volcanic, tectonic, and associated alluvial and colluvial processes over the past four million years. Sunshine Valley, named for...
Production of hybrids between western gray wolves and western coyotes
L. David Mech, Bruce W. Christensen, Cheryl S. Asa, Margaret Callahan, Julie K. Young
2014, PLoS ONE (9)
Using artificial insemination we attempted to produce hybrids between captive, male, western, gray wolves (Canis lupus) and female, western coyotes (Canis latrans) to determine whether their gametes would be compatible and the coyotes could produce and nurture offspring. The results contribute new information to an ongoing controversy over whether the...
The Snowmastodon Project
Kirk R. Johnson, Ian M. Miller, Jeffery S. Pigati
2014, Quaternary Research (82) 473-476
Studies of terrestrial biotic and environmental dynamics of the last interglacial period, Marine Oxygen Isotope Stage (MIS) 5, provide insight into the effects of long-term climate change on Pleistocene ecosystems. In North America, however, there are relatively few fossil sites that definitively date to MIS 5. Even fewer contain multiple...
Competitive interactions and resource partitioning between northern spotted owls and barred owls in western Oregon
J. David Wiens, Robert G. Anthony, Eric D. Forsman
2014, Wildlife Monographs (185) 1-50
The federally threatened northern spotted owl (Strix occidentalis caurina) is the focus of intensive conservation efforts that have led to much forested land being reserved as habitat for the owl and associated wildlife species throughout the Pacific Northwest of the United States. Recently, however, a...
Water movement through the unsaturated zone of the High Plains Aquifer in the Central Platte Natural Resources District, Nebraska, 2008-12
Gregory V. Steele, Jason J. Gurdak, Christopher M. Hobza
2014, Scientific Investigations Report 2014-5008
Uncertainty about the effects of land use and climate on water movement in the unsaturated zone and on groundwater recharge rates can lead to uncertainty in water budgets used for groundwater-flow models. To better understand these effects, a cooperative study between the U.S. Geological Survey and the Central Platte Natural...
Capacitively coupled and direct-current resistivity surveys of selected reaches of Cozad, Thirty-Mile, Orchard-Alfalfa, Kearney, and Outlet Canals in Nebraska, 2012-13
Christopher M. Hobza, Bethany L. Burton, Jeffrey E. Lucius, Ryan E. Tompkins
2014, Open-File Report 2014-1007
Understanding the spatial characteristics of leakage from canals is critical to effectively managing and utilizing water resources for irrigation and hydroelectric purposes. Canal leakage in some parts of Nebraska is the primary source of water for groundwater recharge and helps maintain the base flow of streams. Because surface-water supplies depend...
Geologic and geophysical maps of the eastern three-fourths of the Cambria 30' x 60' quadrangle, central California Coast Ranges
R. W. Graymer, V.E. Langenheim, M. A. Roberts, Kristin McDougall
2014, Scientific Investigations Map 3287
The Cambria 30´ x 60´ quadrangle comprises southwestern Monterey County and northwestern San Luis Obispo County. The land area includes rugged mountains of the Santa Lucia Range extending from the northwest to the southeast part of the map; the southern part of the Big Sur coast in the northwest; broad...
Factors affecting the movement and persistence of nitrate and pesticides in the surficial and upper Floridan aquifers in two agricultural areas in the southeastern United States
B. G. Katz, M. P. Berndt, C. A. Crandall
2014, Environmental Earth Sciences (71) 2779-2795
Differences in the degree of confinement, redox conditions, and dissolved organic carbon (DOC) are the main factors that control the persistence of nitrate and pesticides in the Upper Floridan aquifer (UFA) and overlying surficial aquifer beneath two agricultural areas in the southeastern US. Groundwater samples were collected multiple times from...
Mass loads of dissolved and particulate mercury and other trace elements in the Mt. Amiata mining district, Southern Tuscany (Italy)
V. Rimondi, P. Costagliola, J. E. Gray, P. Lattanzi, M. Nannucci, M. Paolieri, A. Salvadori
2014, Environmental Science and Pollution Research (21) 5575-5585
Total dissolved and particulate mercury (Hg), arsenic (As), and antimony (Sb) mass loads were estimated in different seasons (March and September 2011 and March 2012) in the Paglia River basin (PRB) (central Italy). The Paglia River drains the Mt. Amiata Hg district, one of the largest Hg-rich regions worldwide. Quantification...
Terrestrial carbon is a resource, but not a subsidy, for lake zooplankton
Patrick T. Kelly, Christopher T. Solomon, Brian Weidel, Stuart E. Jones
2014, Ecology (95) 1236-1242
Inputs of terrestrial organic carbon (t-OC) into lakes are often considered a resource subsidy for aquatic consumer production. Although there is evidence that terrestrial carbon can be incorporated into the tissues of aquatic consumers, its ability to enhance consumer production has been debated. Our research aims to evaluate the net...
In vivo retention of ingested Au NPs by Daphnia magna: No evidence for trans-epithelial alimentary uptake
Farhan R. Khan, Gabrielle M. Kennaway, Marie-Noële Croteau, Agnieszka Dybowska, Brian D. Smith, Antonio J.A. Nogueira, Philip S. Rainbow, Samuel N. Luoma, Eugenia Valsami-Jones
2014, Chemosphere (100) 97-104
In vivo studies with Daphnia magna remain inconclusive as to whether engineered nanoparticles (NPs) are internalized into tissues after ingestion. Here we used a three-pronged approach to study the in vivo retention and efflux kinetics of 20 nm citrate stabilized Au NPs ingested by this key aquatic species. Daphnids were...
