Well log and 2D seismic data character of the Wilcox Group in south-central Louisiana
Catherine B. Enomoto
2014, Gulf Coast Association of Geological Societies Transactions (64) 105-118
Well logs and 2D seismic data were used to interpret the depth and morphology of potential Paleocene and lower Eocene Wilcox Group slope and basin-floor reservoirs in south-central Louisiana. These may occur in a poorly explored area previously estimated by the U.S. Geological Survey to contain a mean undiscovered conventional...
North American Commission on Stratigraphic Nomenclature Note 66: records of Stratigraphic Commission, 2003-2013
Robert M. Easton, Octavian Catuneanu, Art D. Donovan, Richard H. Fluegeman, A.P. Hamblin, Howard Harper, Norman P. Lasca, Jared R. Morrow, Randall C. Orndorff, Peter Sadler, Robert W. Scott, Berry H. Tew
2014, Stratigraphy (11) 143-157
Note 66 summarizes activities of the North American Commission on Stratigraphic Nomenclature (NACSN) from November 2003 to October 2013 and is condensed from the minutes of the NACSN’s 58th to 68th annual meetings1. The purposes of the Commission are to develop statements of stratigraphic principles,recommend procedures applicable to the classification...
Landscapes of Santa Rosa Island, Channel Islands National Park, California
R. Randall Schumann, Scott A. Minor, Daniel R. Muhs, Jeffery S. Pigati
2014, Book chapter, Monographs of the Western North American Naturalist
Santa Rosa Island (SRI) is the second-largest of the California Channel Islands. It is one of 4 east–west aligned islands forming the northern Channel Islands chain, and one of the 5 islands in Channel Islands National Park. The landforms, and collections of landforms called landscapes, of Santa Rosa Island have...
Potentiometric surface and water-level difference maps of selected confined aquifers in Southern Maryland and Maryland’s Eastern Shore, 1975-2013
Andrew W. Staley, David C. Andreasen, Stephen E. Curtin
2014, Open-File Report 14-02-02
Groundwater is the principal source of freshwater supply in most of Southern Maryland and Maryland’s Eastern Shore. It is also the source of freshwater supply used in the operation of the Calvert Cliffs, Chalk Point, and Morgantown power plants. Increased groundwater withdrawals over the last several decades have caused groundwater...
Resolving terrestrial ecosystem processes along a subgrid topographic gradient for an earth-system model
Z M Subin, Paul C.D. Milly, B N Sulman, Sergey Malyshev, E Shevliakova
2014, Hydrology and Earth System Sciences (11) 8443-8492
Soil moisture is a crucial control on surface water and energy fluxes, vegetation, and soil carbon cycling. Earth-system models (ESMs) generally represent an areal-average soil-moisture state in gridcells at scales of 50–200 km and as a result are not able to capture the nonlinear effects of topographically-controlled subgrid heterogeneity in...
USGS48 Puerto Rico precipitation - A new isotopic reference material for δ2H and δ18O measurements of water
Haiping Qi, Tyler B. Coplen, Lauren V. Tarbox, Jennifer M. Lorenz, Martha A. Scholl
2014, Isotopes in Environmental and Health Studies (50) 442-447
A new secondary isotopic reference material has been prepared from Puerto Rico precipitation, which was filtered, homogenised, loaded into glass ampoules, sealed with a torch, autoclaved to eliminate biological activity, and calibrated by dual-inlet isotope-ratio mass spectrometry. This isotopic reference material, designated as USGS48, is intended to be one of...
Latest Quaternary paleoseismology and evidence of distributed dextral shear along the Mohawk Valley fault zone, northern Walker Lane, California
Ryan D. Gold, Richard W. Briggs, Stephen Personius, Anthony J. Crone, Shannon A. Mahan, Stephen Angster
2014, Journal of Geophysical Research B: Solid Earth (119) 5014-5032
The dextral-slip Mohawk Valley fault zone (MVFZ) strikes northwestward along the eastern margin of the Sierra Nevada in the northern Walker Lane. Geodetic block modeling indicates that the MVFZ may accommodate ~3 mm/yr of regional dextral strain, implying that it is the highest slip-rate strike-slip fault in the region; however,...
Toxicokinetics and coagulopathy threshold of the rodenticide diphacinone in eastern screech-owls (Megascops asio)
Barnett A. Rattner, K.E. Horak, Rebecca S. Lazarus, D.A. Goldade, J. J. Johnston
2014, Environmental Toxicology and Chemistry (33) 74-81
In the United States, new regulations on second-generation anticoagulant rodenticides will likely be offset by expanded use of first-generation anticoagulant rodenticides. In the present study, eastern screech-owls (Megascops asio) were fed 10 µg diphacinone/g wet weight food for 7 d, and recovery was monitored over a 21-d postexposure period. By day...
Integration of stable carbon isotope, microbial community, dissolved hydrogen gas, and 2HH2O tracer data to assess bioaugmentation for chlorinated ethene degradation in fractured rocks
Kinga M. Revesz, Barbara Sherwood Lollar, Julie D. Kirshtein, Claire R. Tiedeman, Thomas E. Imbrigiotta, Daniel J. Goode, Allen M. Shapiro, Mary A. Voytek, Pierre J. Lancombe, Eurybiades Busenberg
2014, Journal of Contaminant Hydrology (156) 62-77
An in situ bioaugmentation (BA) experiment was conducted to understand processes controlling microbial dechlorination of trichloroethene (TCE) in groundwater at the Naval Air Warfare Center (NAWC), West Trenton, NJ. In the BA experiment, an electron donor (emulsified vegetable oil and sodium lactate) and a chloro-respiring microbial consortium were injected into...
Fitting statistical distributions to sea duck count data: implications for survey design and abundance estimation
Elise F. Zipkin, Jeffery B. Leirness, Brian P. Kinlan, Allan F. O’Connell, Emily D. Silverman
2014, Statistical Methodology (17) 67-81
Determining appropriate statistical distributions for modeling animal count data is important for accurate estimation of abundance, distribution, and trends. In the case of sea ducks along the U.S. Atlantic coast, managers want to estimate local and regional abundance to detect and track population declines, to define areas of high and...
Band reporting probablilities of mallards, American black ducks, and wood ducks in eastern North America
Pamela R. Garrettson, Robert V. Raftovich, James E. Hines, Guthrie S. Zimmerman
2014, Journal of Wildlife Management (78) 50-57
Estimates of band reporting probabilities are used for managing North American waterfowl to convert band recovery probabilities into harvest probabilities, which are used to set harvest regulations. Band reporting probability is the probability that someone who has shot and retrieved a banded bird will report the band. This probability can...
Ambient changes in tracer concentrations from a multilevel monitoring system in Basalt
Roy C. Bartholomay, Brian V. Twining, Peter E. Rose
2014, Groundwater Monitoring & Remediation (34) 79-88
Starting in 2008, a 4-year tracer study was conducted to evaluate ambient changes in groundwater concentrations of a 1,3,6-naphthalene trisulfonate tracer that was added to drill water. Samples were collected under open borehole conditions and after installing a multilevel groundwater monitoring system completed with 11 discrete monitoring zones within dense...
Near-bottom circulation and dispersion of sediment containing Alexandrium fundyense cysts in the Gulf of Maine during 2010-2011
Alfredo L. Aretxabaleta, Bradford Butman, Richard P. Signell, P. Soupy Dalyander, Christopher R. Sherwood, Vitalii A. Sheremet, Dennis J. McGillicuddy Jr.
2014, Deep-Sea Research Part II: Topical Studies in Oceanography (103) 96-111
The life cycle of Alexandrium fundyense in the Gulf of Maine includes a dormant cyst stage that spends the winter predominantly in the bottom sediment. Wave-current bottom stress caused by storms and tides induces resuspension of cyst-containing sediment during winter and spring. Resuspended sediment could be transported by water flow...
The Mw 5.8 Mineral, Virginia, earthquake of August 2011 and aftershock sequence: constraints on earthquake source parameters and fault geometry
Daniel E. McNamara, H.M. Benz, Robert B. Herrmann, Eric A. Bergman, Paul Earle, Anne Meltzer, Mitch Withers, Martin Chapman
2014, Bulletin of the Seismological Society of America (104) 40-54
The Mw 5.8 earthquake of 23 August 2011 (17:51:04 UTC) (moment, M0 5.7×1017 N·m) occurred near Mineral, Virginia, within the central Virginia seismic zone and was felt by more people than any other earthquake in United States history. The U.S. Geological Survey (USGS) received 148,638 felt reports from 31 states and 4...
The attenuation of Fourier amplitudes for rock sites in eastern North America
Gail M. Atkinson, David M. Boore
2014, Bulletin of the Seismological Society of America (104) 513-528
We develop an empirical model of the decay of Fourier amplitudes for earthquakes of M 3–6 recorded on rock sites in eastern North America and discuss its implications for source parameters. Attenuation at distances from 10 to 500 km may be adequately described using a bilinear model with a geometric...
Relative significance of microtopography and vegetation as controls on surface water flow on a low-gradient floodplain
Jungyill Choi, Judson W. Harvey
2014, Wetlands (34) 101-115
Surface water flow controls water velocities, water depths, and residence times, and influences sediment and nutrient transport and other ecological processes in shallow aquatic systems. Flow through wetlands is substantially influenced by drag on vegetation stems but is also affected by microtopography. Our goal was to use microtopography data directly...
Large wood budget and transport dynamics on a large river using radio telemetry
Edward R. Schenk, Bertrand Moulin, Cliff R. Hupp, Jean M. Richte
2014, Earth Surface Processes and Landforms (39) 487-498
Despite the abundance of large wood (LW) river studies there is still a lack of understanding of LW transport dynamics on large low gradient rivers. This study used 290 radio frequency identification tagged (RFID) LW and 54 metal (aluminum) tagged LW, to quantify the percent of in-channel LW that moves...
Commercial possibilities for stranded conventional gas from Alaska's North Slope
Emil Attanasi, P.A. Freeman
2014, Natural Resources Research (23) 175-193
Stranded gas resources are defined for this study as gas resources in discrete accumulations that are not currently commercially producible, or producible at full potential, for either physical or economic reasons. Approximately 35 trillion cubic feet (TCF) of stranded gas was identified on Alaska’s North Slope. The commercialization of this...
Response of walleye and yellow perch to water-level fluctuations in glacial lakes
D.J. Dembkowski, Steven R. Chipps, B. G. Blackwell
2014, Fisheries Management and Ecology (21) 89-95
The influence of water levels on population characteristics of yellow perch, Perca flavescens (Mitchill), and walleye, Sander vitreus (Mitchill), was evaluated across a range of glacial lakes in north-eastern South Dakota, USA. Results showed that natural variation in water levels had an important influence on frequently measured fish population characteristics. Yellow perch abundance was...
Status of rainbow smelt in the U.S. waters of Lake Ontario, 2013
Brian Weidel, Michael J. Connerton
2014, NYSDEC Lake Ontario Annual Report 2013-12
Rainbow Smelt Osmerus mordax are the second most abundant pelagic prey fish in Lake Ontario after Alewife Alosa psuedoharengus. The 2013, USGS/NYSDEC bottom trawl assessment indicated the abundance of Lake Ontario age-1 and older Rainbow Smelt decreased by 69% relative to 2012. Length frequency-based age analysis indicated that age-1 Rainbow...
Trails through time: A geologist's guide to Jefferson County open space parks
John C. Reed
2014, Book
Introduction Jefferson County straddles one of the most conspicuous and important geographic and geologic boundaries in westernNorth America, the eastern flank of the Rocky Mountains. To the east you can travel 1,100 miles across Great Plains andCentral Lowlands before you sight the western foothills of the Appalachians. If you...
Relation of landslides triggered by the Kiholo Bay earthquake to modeled ground motion
Edwin L. Harp, Stephen H. Hartzell, Randall W. Jibson, L. Ramirez-Guzman, Robert G. Schmitt
2014, Bulletin of the Seismological Society of America (104) 2529-2540
The 2006 Kiholo Bay, Hawaii, earthquake triggered high concentrations of rock falls and slides in the steep canyons of the Kohala Mountains along the north coast of Hawaii. Within these mountains and canyons a complex distribution of landslides was triggered by the earthquake shaking. In parts of the area, landslides...
Coal fields of the conterminous United States—National Coal Resource Assessment updated version
Joseph A. East
2013, Open-File Report 2012-1205
This map sheet with accompanying Geographic Information System (GIS) project is an update of the existing U.S. Geological Survey (USGS) Conterminous U.S. Coal Fields map. This update was compiled using data primarily from the USGS National Coal Resource Assessment (NCRA) and information from other published maps. The five regions examined...
Hydrogeology of the Susquehanna River valley-fill aquifer system and adjacent areas in eastern Broome and southeastern Chenango Counties, New York
Paul M. Heisig
2013, Scientific Investigations Report 2012-5282
The hydrogeology of the valley-fill aquifer system along a 32-mile reach of the Susquehanna River valley and adjacent areas was evaluated in eastern Broome and southeastern Chenango Counties, New York. The surficial geology, inferred ice-marginal positions, and distribution of stratified-drift aquifers were mapped from existing data. Ice-marginal positions, which represent...
Validation of chlorine and oxygen isotope ratio analysis to differentiate perchlorate sources and to document perchlorate biodegradation
Paul B. Hatzinger, J.K. Bohlke, Neil C. Sturchio, Baohua Gu
2013, Report
Increased health concerns about perchlorate (ClO4-) during the past decade and subsequent regulatory considerations have generated appreciable interest in source identification. The key objective of the isotopic techniques described in this guidance manual is to provide evidence concerning the origin of ClO4- in soils and groundwater and, more specifically, whether...
