Molecular and isotopic gas composition of the Devonian Berea Sandstone and implications for gas evolution, eastern Kentucky
T. M. Parris, Paul C. Hackley, S. F. Greb, C. F. Eble
2021, American Association of Petroleum Geologists Bulletin (105) 575-595
Since 2011, the Devonian Berea Sandstone in northeastern Kentucky has produced oil where thermal maturity studies indicate that likely source rocks, namely, the Devonian Ohio Shale and Mississippian Sunbury Shale, are thermally immature. Downdip, where source rocks are mature for oil, the Berea Sandstone and Ohio Shale primarily produce...
Paragenesis of an orogenic gold deposit: New insights on mineralizing processes at the Grass Valley District, California
Ryan D. Taylor, Thomas Monecke, T. James Reynolds, Jochen Monecke
2021, Economic Geology (116) 323-356
The Grass Valley orogenic gold district in the Sierra Nevada foothills province, central California, is the largest historical gold producer of the North American Cordillera. Gold mineralization is associated with shallowly dipping north-south veins hosted by the 160 Ma Grass Valley granodiorite to the southwest of the Grass Valley fault...
Preface to the Focus Section on the 2020 Intermountain West earthquakes
Ryan D. Gold, Jayne Bormann, Keith D. Koper
2021, Seismological Research Letters (92)
The Intermountain West region of the United States extends from the eastern margin of the Sierra Nevada and Cascade Mountains in the west to the Rocky Mountains in the east. The region is characterized by dextral shear along the eastern margin of the Sierra Nevada and nearly east-west extension in...
Mixed-stock analysis in the age of genomics: Rapture genotyping enables evaluation of stock-specific exploitation in a freshwater fish population with weak genetic structure
Peter T. Euclide, Tom MacDougall, Jason M. Robinson, Matthew D. Faust, Chris C. Wilson, Kuan-Yu Chen, Elizabeth A. Marschall, Wesley Larson, Stuart A. Ludsin
2021, Evolutionary Applications (14) 1403-1420
Mixed-stock analyses using genetic markers have informed fisheries management in cases where strong genetic differentiation occurs among local spawning populations, yet many fisheries are supported by multiple spawning stocks that are weakly differentiated. Freshwater fisheries exemplify this problem, with many harvested populations supported by multiple stocks of young evolutionary age...
U–Pb zircon eruption age of the Old Crow tephra and review of extant age constraints
Seth D. Burgess, Jorge A. Vazquez, Christopher F. Waythomas, Kristi L. Wallace
2021, Quaternary Geochronology (66)
Eruption of the Old Crow tephra deposited ~200 km3 of volcanic ash throughout Alaska and the northwestern Yukon (eastern Beringia), providing an isochronous marker across the region on a scale unique in the Pleistocene. The Old Crow tephra represents a critical temporal piercing point used...
Implications of historical and contemporary processes on genetic differentiation of a declining boreal songbird: The rusty blackbird
Robert E. Wilson, Steven M. Matsuoka, Luke L. Powell, James A. Johnson, Dean W. Demarest, Diana Stralberg, Sarah A. Sonsthagen
2021, Diversity (13)
The arrangement of habitat features via historical or contemporary events can strongly influence genomic and demographic connectivity, and in turn affect levels of genetic diversity and resilience of populations to environmental perturbation. The rusty blackbird (Euphagus carolinus) is a forested wetland habitat specialist whose population size...
Accommodating the role of site memory in dynamic species distribution models
Graziella Vittoria DiRenzo, David A. W. Miller, Blake R. Hossack, Brent H. Sigafus, Paige E. Howell, Erin L. Muths, Evan H. Campbell Grant
2021, Ecology (102)
First-order dynamic occupancy models (FODOMs) are a class of state-space model in which the true state (occurrence) is observed imperfectly. An important assumption of FODOMs is that site dynamics only depend on the current state and that variations in dynamic processes are adequately captured with covariates...
Using decision science for monitoring threatened western snowy plovers to inform recovery
Bruce G. Marcot, James E. Lyons, Daniel C Elbert, Laura Todd
2021, Animals (11)
Western Snowy Plovers (Charadrius nivosus nivosus) are federally listed under the US Endangered Species Act as Threatened. They occur along the US Pacific coastline and are threatened by habitat loss and destruction and excessive levels of predation and human disturbance. Populations have been monitored since the...
Extreme Quaternary plate boundary exhumation and strike slip localized along the southern Fairweather fault, Alaska, USA
Richard O. Lease, Peter J. Haeussler, Robert C. Witter, Daniel F. Stockli, Adrian Bender, Harvey Kelsey, Paul O’Sullivan
2021, Geology (49) 602-606
The Fairweather fault (southeastern Alaska, USA) is Earth’s fastest-slipping intracontinental strike-slip fault, but its long-term role in localizing Yakutat–(Pacific–)North America plate motion is poorly constrained. This plate boundary fault transitions northward from pure strike slip to transpression where it comes onshore and undergoes a <25°, 30-km-long restraining double bend. To...
Multilevel groundwater monitoring of hydraulic head, water temperature, and chemical constituents in the eastern Snake River Plain aquifer, Idaho National Laboratory, Idaho, 2014–18
Brian V. Twining, Roy C. Bartholomay, Jason C. Fisher, Calvin Anderson
2021, Scientific Investigations Report 2021-5002
Radiochemical and chemical wastewater discharged to infiltration ponds and disposal wells since the early 1950s at the Idaho National Laboratory (INL), southeastern Idaho, has affected the water quality of the eastern Snake River Plain (ESRP) aquifer. In 2006, the U.S. Geological Survey (USGS), in cooperation with the U.S. Department of...
Geologic assessment of undiscovered oil and gas resources in the Cherokee Platform area of Kansas, Oklahoma, and Missouri
Ronald M. Drake II, Joseph R. Hatch
2021, Scientific Investigations Report 2020-5110
In 2015, the U.S. Geological Survey completed a geology-based assessment to estimate the volumes of undiscovered, technically recoverable petroleum resources in the Cherokee Platform Province area of southeastern Kansas, northeastern Oklahoma, and southwestern Missouri. The U.S. Geological Survey identified four stratigraphic intervals that contain petroleum source rocks: (1) thin shales...
The role of hydrates, competing chemical constituents, and surface composition on CLNO2 formation
Haley M. Royer, Dhruv Mitroo, Sarah M. Hayes, Savannah Haas, Kerri A Pratt, Patricia Blackwelder, Thomas E. Gill, Cassandra J. Gaston
2021, Environmental Science Technology (55) 2869-2877
Atomic chlorine (Cl•) affects air quality and atmospheric oxidizing capacity. Nitryl chloride (ClNO2) – a common Cl• source–forms when chloride-containing aerosols react with dinitrogen pentoxide (N2O5). A recent study showed that saline lakebed (playa) dust is an inland source of particulate chloride (Cl–)...
Patterns and processes of pathogen exposure in gray wolves across North America
E. E. Brandell, Paul C. Cross, Meggan E. Craft, Douglas W. Smith, E. J. Dubovi, Marie L. J. Gilbertson, Tyler Wheeldon, John A. Stephenson, Shannon Barber-Meyer, B. L. Borg, Mathew Sorum, Daniel R. Stahler, Allicia P Kelly, Morgan Anderson, H. D. Cluff, Daniel R. MacNulty, David L. Watts, G. Roffler, Helen M. Schwantje, Mark Hebblewhite, K. Beckman, P. J. Hudson
2021, Scientific Reports (11) 3722
The presence of many pathogens varies in a predictable manner with latitude, with infections decreasing from the equator towards the poles. We investigated the geographic trends of pathogens infecting a widely distributed carnivore: the gray wolf (Canis lupus). Specifically, we investigated which variables best explain and predict geographic trends in...
Nutrient concentrations, loads, and yields in the Middle Iowa River Basin, Iowa
Jessica D. Garrett, Stephen J. Kalkhoff
2021, Scientific Investigations Report 2020-5148
Concentrations, loads, and yields of nitrate plus nitrite, total nitrogen, and total phosphorus were assessed in the Iowa River upstream from the Coralville Reservoir in east-central Iowa. The results of this study describe baseline nutrient transport during two historical reference periods, 1980–96 and 2006–10, that can be used to evaluate...
Biological and anthropogenic influences on macrophage aggregates in white perch Morone americana from Chesapeake Bay, USA
Mark A Matsche, Vicki S. Blazer, Erin Pulster, Patricia M. Mazik
2021, Diseases of Aquatic Organisms (143) 79-100
The response of macrophage aggregates in fish to a variety of environmental stressors has been useful as a biomarker of exposure to habitat degradation. Total volume of macrophage aggregates (MAV) was estimated in the liver and spleen of white perch Morone americana from Chesapeake Bay using stereological approaches. Hepatic and splenic MAV...
Winter roost selection of Lasiurine tree bats in a pyric landscape
Marcelo H. Jorge, W. Mark Ford, Sara E. Sweeten, Samuel R. Freeze, Michael C. TRUE, Michael J. St. Germain, Hila Taylor, Katherine M. Gorman, Michael J. Cherry, Elina P. Garrison
2021, PLoS ONE (16)
Day-roost selection by Lasiurine tree bats during winter and their response to dormant season fires is unknown in the southeastern United States where dormant season burning is widely applied. Although fires historically were predominantly growing season, they now occur in the dormant season in this part...
Integrating sequence capture and restriction-site associated DNA sequencing to resolve recent radiations of pelagic seabirds
Joan Ferrer Obiol, Helen F. James, R. Terry Chesser, Vincent Bretagnolle, Jacob Gonzalez-Solis, Julio Rozas, Marta Riutort, Andreanna J. Welch
2021, Systematic Biology (70) 976-996
The diversification of modern birds has been shaped by a number of radiations. Rapid diversification events make reconstructing the evolutionary relationships among taxa challenging due to the convoluted effects of incomplete lineage sorting (ILS) and introgression. Phylogenomic data sets have the potential to detect patterns of phylogenetic incongruence, and to...
Water-level conditions in the confined aquifers of the New Jersey Coastal Plain, 2013
Alison D. Gordon, Glen B. Carleton, Robert Rosman
2021, Scientific Investigations Report 2019-5146
The Coastal Plain aquifers of New Jersey provide an important source of water for more than 3.5 million people. In 2013, groundwater withdrawals from 10 confined aquifers of the New Jersey Coastal Plain totaled about 190 million gallons per day. Steadily increasing withdrawals from the late 1800s to the early...
Hydrologic and hydraulic analyses of the Grand River, Red Cedar River, and Sycamore Creek near Lansing, Michigan
Matthew T. Whitehead, Chad J. Ostheimer
2021, Scientific Investigations Report 2020-5144
The U.S. Geological Survey (USGS) completed hydrologic and hydraulic analyses for selected reaches of the Grand River, Red Cedar River, and Sycamore Creek near Lansing, Michigan, in cooperation with the city of Lansing. The study comprised a 3.1-mile reach of the Grand River, a 30.3-mile reach of the Red Cedar...
Yellowstone Volcano Observatory 2018 annual report
Yellowstone Volcano Observatory
2021, Circular 1474
The Yellowstone Volcano Observatory (YVO) monitors volcanic and hydrothermal activity associated with the Yellowstone magmatic system, conducts research into magmatic processes occurring beneath Yellowstone Caldera, and issues timely warnings and guidance related to potential future geologic hazards. This report summarizes the activities and findings of YVO during the year 2018,...
Effectiveness of a distance sampling from roads program for white-tailed deer in the National Capital Region parks
Nicholas S. Green, Mark L. Wildhaber, Janice L. Albers
2021, Natural Resource Report 2021/2224
We evaluated the effectiveness of a distance sampling from roads program for estimating population sizes of white-tailed deer (Odocoileus virginianus) from 2001 to 2015 in parks of the National Capital Region (NCR), National Parks Service. Distance sampling is a method for estimating the density of organisms using a distribution of...
Modeling estrogenic activity in streams throughout the Potomac and Chesapeake Bay watersheds
Stephanie E. Gordon, Daniel K. Jones, Vicki S. Blazer, Luke R. Iwanowicz, Brianna M. Williams, Kelly L. Smalling
2021, Environmental Monitoring and Assessment (193)
Endocrine-disrupting compounds (EDCs), specifically estrogenic endocrine-disrupting compounds, vary in concentration and composition in surface waters under the influence of different landscape sources and landcover gradients. Estrogenic activity in surface waters may lead to adverse effects in aquatic species at both individual and population levels, often observed...
Biological and chemical recovery of acidified Catskill Mountain streams in response to the Clean Air Act Amendments of 1990
Barry P. Baldigo, Scott D. George, Dylan R. Winterhalter, Michael McHale
2021, Atmospheric Environment (249)
Decades of acidic deposition have adversely affected aquatic and terrestrial ecosystems in acid-sensitive watersheds in parts of the eastern United States. The national Acid Rain Program (Title IV of the 1990 Clean Air Act Amendments - CAAA) helped reduce emissions of sulfur dioxide (SO2) and nitrogen oxides (NOx) and resulted...
Volcanic seismicity beneath Chuginadak Island, Alaska (Cleveland and Tana volcanoes): Implications for magma dynamics and eruption forecasting
John Power, Diana Roman, John J. Lyons, Matthew M. Haney, Daniel J. Rasmussen, Terry Plank, K. P. Nicolaysen, Pavel Izbekov, C. Werner, A Kaufman
2021, Journal of Volcanology and Geothermal Research (412)
Cleveland and Tana are remote volcanoes located in the central Aleutian volcanic arc on the eastern end of the Islands of Four Mountains (IFM). The persistently active Mount Cleveland volcano, on the western side of Chuginadak Island, is surrounded by several closely spaced Quaternary volcanic centers including Carlisle, Herbert, Kagamil, Tana, and...
Characterization of groundwater quality and discharge with emphasis on selenium in an irrigated agricultural drainage near Delta, Colorado, 2017–19
M. Alisa Mast
2021, Scientific Investigations Report 2020-5132
Selenium is a water-quality constituent of concern for aquatic ecosystems in the lower Gunnison River Basin. Selenium is derived from bedrock of the Mancos Shale and is mobilized and transported to groundwater and surface water by application of irrigation water. Although it is recognized that groundwater contributes an appreciable amount...
