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1721 results.

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Trace silicon determination in biological samples by inductively coupled plasma mass spectrometry (ICP-MS): Insight into volatility of silicon species in hydrofluoric acid digests for optimal sample preparation and introduction to ICP-MS
Zikri Arslan, Heather A. Lowers
2024, Minerals (14)
A method for the determination of trace levels of silicon from biological materials by inductively coupled plasma mass spectrometry (ICP-MS) has been developed. The volatility of water-soluble silicon species, hexafluorosilicic acid (H2SiF6), and sodium metasilicate (Na2SiO3) was investigated by evaporating respective solutions (50 µg/mL silicon) in nitric acid (HNO3),...
Predicting redox conditions in groundwater at a national scale using random forest classification
Anthony J. Tesoriero, Susan Wherry, Danielle Dupuy, Tyler D. Johnson
2024, Environmental Science and Technology (58) 5079-5092
Redox conditions in groundwater may markedly affect the fate and transport of nutrients, volatile organic compounds, and trace metals, with significant implications for human health. While many local assessments of redox conditions have been made, the spatial variability of redox reaction rates makes the determination of redox conditions at regional...
An update of hydrologic conditions and distribution of selected constituents in water, eastern Snake River aquifer and perched groundwater zones, Idaho National Laboratory, Idaho, emphasis 2019–21
Kerri C. Treinen, Allison R. Trcka, Jason C. Fisher
2024, Scientific Investigations Report 2023-5128
Since 1952, wastewater discharged to infiltration ponds (also called “percolation ponds”) and disposal wells at the Idaho National Laboratory (INL) has affected water quality in the eastern Snake River Plain (ESRP) aquifer and perched groundwater zones underlying the INL. The U.S. Geological Survey (USGS), in cooperation with the U.S. Department...
Analyzing spatial distributions and alignments of pitted cone features in Utopia Planitia on Mars
Mackenzie M. Mills, Alfred S. McEwen, Amanda N. Hughes, Ji-Eun Kim, Chris Okubo
2024, Icarus (408)
Martian geomorphology and surface features provide links to understanding past geologic processes such as fluid movement, local and regional tectonics, and feature formation mechanisms. Pitted cones are common features in the northern plains basins of Mars. They have been proposed to have formed from upwelling volatile-rich fluids, such as magma or water-sediment slurries. In...
Occurrence of mixed organic and inorganic chemicals in groundwater and tapwater, town of Campbell, Wisconsin, 2021–22
Kristin M. Romanok, Shannon M. Meppelink, Paul M. Bradley, Sara E. Breitmeyer, Lee Donahue, Mark P. Gaikowski, Randy K. Hines, Kelly L. Smalling
2023, Open-File Report 2023-1088
In response to previous reports of per- and polyfluoroalkyl substances (PFAS) contamination in French Island’s (located in the Mississippi River within the town of Campbell, Wisconsin) primary source of drinking water, 11 locations were sampled by the U.S. Geological Survey (USGS) in October 2021 to assess the potential presence of...
Editorial: Remote sensing of volcanic gas emissions from the ground, air, and space
Christoph Kern, Santiago Arellano, Robin Campion, Silvana Hidalgo, Ryunosuke Kazahaya
2023, Frontiers in Earth Science (11)
When magma rises in volcanic systems, volatile species exsolve from the melt and are outgassed to the atmosphere. The melt composition and temperature, depth at which degassing occurs, extent of gas-water-rock interactions, and volume of ascending magma are all factors that determine the composition and rate of gas emissions at...
Geology, hydrology, and groundwater contamination in the vicinity of Central Chemical facility, Hagerstown, Maryland
Trevor P. Needham, Alex R. Fiore, Scott W. Ator, Jeff P. Raffensperger, Madison B. Smith, Nicole M. Bellmyer, Caitlyn M. Dugan, Carol J. Morel
2023, Scientific Investigations Report 2022-5011
The soil and groundwater at the Central Chemical facility, Hagerstown, Maryland, are contaminated due to the blending and production of pesticides and fertilizers during much of the 20th century. Remedial investigations focus on two operable units (OU) consisting of the surface soils and waste disposal lagoon (OU-1) and the groundwater...
Earth’s mantle composition revealed by mantle plumes
Dominique Weis, Karen Harpp, Lauren N Harrison, Maud Boyet, Catherine Chauvel, Cinzia Farnetani, Val Finlayson, Kanai Lee, Rita Paraï, Anat Shahar, Nicole Williamson
2023, Nature Reviews in Earth and Environment (4) 604-625
Mantle plumes originate at depths near the core−mantle boundary (~2,800 km). As such, they provide invaluable information about the composition of the deep mantle and insight into convection, crustal formation, and crustal recycling, as well as global heat and volatile budgets. In this Review, we discuss the effectiveness and challenges...
Photochemical mobilization of dissolved hydrocarbon oxidation products from petroleum contaminated soil into a shallow aquifer activate human nuclear receptors
Phoebe Zito, Barbara A. Bekins, Dalma Martinović-Weigelt, Maxwell L. Harsha, Katherine E. Humpal, Jared J. Trost, Isabelle M. Cozzarelli, Lynn R. Mazzoleni, Simeon K. Schum, David C. Podgorski
2023, Journal of Hazardous Materials (459)
Elevated non-volatile dissolved organic carbon (NVDOC) concentrations in groundwater monitoring wells under oil-contaminated hydrophobic soils originating from a pipeline rupture at the National Crude Oil Spill & Natural Attenuation Research Site near Bemidji, MN are documented.. We hypothesized the elevated NVDOC is comprised of water-soluble photooxidation products transported from the...
A Monte-Carlo chemical budget approach to assess ambient groundwater flow in bedrock open boreholes
Philip Harte
2023, Groundwater Monitoring and Remediation (44) 57-71
In low-permeability rocks, ambient groundwater flow in open boreholes may go undetected using conventional borehole-flowmeter tools and alternative approaches may be needed to identify flow. Understanding ambient flow in open boreholes is important for tracking of cross contamination in groundwater. Chlorinated volatile organic compound (CVOC)...
Viscous relaxation of Oort and Edgeworth craters on Pluto: Possible indicators of an epoch of early high heat flow
W. B. McKinnon, Michael T. Bland, K. Singer, P. M. Schenk, S. Robbins
2023, Journal of Geophysical Research: Planets (128)
Impact craters, with their well-defined initial shapes, have proven useful as heat flow probes of a number of icy bodies, provided characteristics of viscous relaxation can be identified. For Pluto's numerous craters, such identifications are hampered/complicated by infilling and erosion by mobile volatile ices, but not in...
Tracking carbon from subduction to outgassing along the Aleutian-Alaska Volcanic Arc
Taryn Lopez, Tobias P. Fischer, Terry Plank, Alberto Malinverno, Andrea Rizzo, Daniel J. Rasmussen, Elizabeth Cottrell, Cynthia Werner, Christoph Kern, Deborah Bergfeld, Tehnuka Ilanko, Janine L. Andrys, Katherine A. Kelley
2023, Science Advances (9)
Subduction transports volatiles between Earth’s mantle, crust, and atmosphere, ultimately creating a habitable Earth. We use isotopes to track carbon from subduction to outgassing along the Aleutian-Alaska Arc. We find substantial along-strike variations in the isotopic composition of volcanic gases, explained by different recycling efficiencies of subducting carbon to the...
Selenium hazards in the Salton Sea environment—Summary of current knowledge to inform future wetland management
Michael R. Rosen, Susan E.W. De La Cruz, Krishangi D. Groover, Isa Woo, Sarah A. Roberts, Melanie J. Davis, Cristiana Y. Antonino
2023, Scientific Investigations Report 2023-5042
Quaternary marine and continental shales in the western United States are sources of selenium that can be loaded into the aquatic environment through mining, agricultural, and energy production processes. The mobilization of selenium from shales through agricultural irrigation has been recognized since the 1930s; however, discovery of deformities in birds...
Distribution of rare earth and other critical elements in lignites from the Eocene Jackson Group, Texas
James C. Hower, Peter D. Warwick, Bridget R. Scanlon, Robert C. Reedy, Tristan M. Childress
2023, Innternational Journal of Coal Geology (275)
Coal is increasingly evaluated as a source of rare earth elements (REEs) in the United States to address the overreliance on imported REEs. The objective of this study was to assess the distribution of REEs in lignites from selected mining areas in the Texas...
Masting is uncommon in trees that depend on mutualist dispersers in the context of global climate and fertility gradients
Tong Qiu, Marie-Claire Aravena Acuna, Davide Ascoli, Yves Bergeron, Michal Mogdziewicz, Thomas Biovin, Raul Bonal, Thomas Caignard, Maxime Cailleret, Rafael Calama, Sergio Donoso Calderon, J. Julio Camarero, Chia-Hua Chang-Yang, Jerome Chave, Francesco Chianucci, Benoit Courbaud, Andrea Cutini, Adrian Das, Nicolas Delpierre, Sylvain Delzon, Michael Dietze, Laurent Dormont, Josep Maria Espelta, Timothy J. Fahey, William Farfar-Rios, Jerry F. Franklin, Catherine A. Gehring, Gregory S. Gilbert, Georg Gratzner, Cathryn H. Greenberg, Arthur Guignabert, Qinfeng Guo, Andrew Hacket-Pain, Arndt Hampe, Qingmin Han, Jan Holik, Kazuhiko Hoshizaki, Ines Ibanez, Jill F. Johnstone, Valentin Journee, Thomas Kitzberger, Jean Knops, Georges Kunstler, Hiroko Kurokawa, Jonathan G. A. Lageard, Jalene LaMontagne, Francois Lefevre, Theodor Leininger, Jean-Marc Limousin, James A. Lutz, Diana Macias, Anders Marell, Eliot J. B. McIntire, Christopher Moore, Emily V. Moran, Renzo Motta, Jonathan A. Myers, Thomas A. Nagel, Shoji Naoe, Mohoko Noguchi, Michio Oguro, Robert Parmenter, Ignacio M. Perez-Ramos, Lukasz Piechnik, Tomasz Podforski, John Poulsen, Miranda Redmond, Chad Reid, Kyle C. Rodman, Fransisco Rodrigues-Sanchez, Pavel Samonil, Javier Sanguinetto, Lane Scher, Barbara Seget, Shubhi Sharma, Mitsue Shibata, Miles Silman, Michael A. Steele, Nathan L. Stephenson, Jacob N. Straub, Samantha Sutton, Jennifer J. Swenson, Margaret Swift, Peter A. Thomas, Maria Uriarte, Giorgio Vacchiano, Amy V. Whipple, Thomas G. Whitham, Andreas Wion, Joseph Wright, Kai Zhu, Jess Zimmermann, Magdalena Zywiec, James S. Clark
2023, Nature Plants (9) 1044-1056
The benefits of masting (volatile, quasi-synchronous seed production at lagged intervals) include satiation of seed predators, but these benefits come with a cost to mutualist pollen and seed dispersers. If the evolution of masting represents a balance between these benefits and costs, we expect mast avoidance...
Distribution of chlorinated volatile organic compounds and per- and polyfluoroalkyl substances in groundwater and surface water at the former Naval Air Warfare Center, West Trenton, New Jersey, 2018
Alex R. Fiore, Thomas E. Imbrigiotta, Timothy P. Wilson
2023, Open-File Report 2023-1022
Groundwater wells and surface-water storm sewers contaminated with volatile organic compounds (VOCs) and per- and polyfluoroalkyl substances (PFASs) at the former Naval Air Warfare Center (NAWC) site in West Trenton, New Jersey were sampled in 2018 as part of the Navy’s long-term monitoring program. Trichloroethene (TCE), cis-1,2-dichloroethene (cisDCE), and vinyl...
Groundwater availability, geochemistry, and flow pathways to public-supply wells in the Atlantic Coastal Plain and bedrock aquifers, Aiken County and part of Lexington County, South Carolina, 2015–2019
Bruce G. Campbell, James E. Landmeyer
2023, Scientific Investigations Report 2022-5036
Between 2015 and 2019, the U.S. Geological Survey (USGS) studied concerns related to projected increases in demand for groundwater, in collaboration with municipal water providers and county managers within the study area, Aiken County and part of Lexington County, South Carolina. A three-dimensional (3D), numerical groundwater-flow model of the Atlantic...
Water quality at Chaco Culture National Historical Park and the potential effects of hydrocarbon extraction
Benjamin S. Linhoff, Kimberly R. Beisner, Andrew Hunt, Zachary M. Shephard
2023, Journal of Hydrology: Regional Studies (47)
Study regionChaco Culture National Historical Park (CCNHP) is in the San Juan Basin of northwestern New Mexico, U.S.A. Its only water supply is in Gallup Sandstone aquifer, stratigraphically surrounded by layers long targeted for oil and natural gas extraction.Study focusTo assess groundwater flow direction, age,...
Weak degassing from remote Alaska volcanoes characterized with a new airborne Imaging DOAS instrument and a suite of in situ sensors
Christoph Kern, Peter J. Kelly
2023, Frontiers in Earth Science (11)
Gas emissions from volcanoes occur when volatile species exsolve from magmatic and hydrothermal systems and make their way to the surface. Measurements of emitted gases therefore provide insights into volcanic processes. On 16 July 2021, we made airborne measurements of weak gas plumes emitted from four remote Alaska volcanoes: Iliamna...
Completion summary for Borehole TAN-2336 at Test Area North, Idaho National Laboratory, Idaho
Brian V. Twining, Kerri C. Treinen, Allison R. Trcka
2023, Scientific Investigations Report 2023-5020
In 2021, the U.S. Geological Survey, in cooperation with the U.S. Department of Energy, drilled and constructed borehole TAN-2336 for stratigraphic framework analyses and long-term groundwater monitoring of the eastern Snake River Plain aquifer at the Idaho National Laboratory in southeastern Idaho. Borehole TAN-2336 initially was cored from the depths...
Algal amendment enhances biogenic methane production from coals of different thermal maturity
George A. Platt, Katherine J. Davis, Hannah D. Schweitzer, Heidi J. Smith, Matthew W. Fields, Elliott Barnhart, Robin Gerlach
2023, Frontiers in Microbiology (14)
The addition of small amounts of algal biomass to stimulate methane production in coal seams is a promising low carbon renewable coalbed methane enhancement technique. However, little is known about how the addition of algal biomass amendment affects methane production from coals of different thermal maturity. Here, we show...
Sierra Nevada amphibians demonstrate stable occupancy despite precipitation volatility in the early 21st Century
Brian J. Halstead, Patrick M. Kleeman, Jonathan P. Rose, Gary M. Fellers
2023, Frontiers in Ecology and Evolution (10)
Climate can have a strong influence on species distributions, and amphibians with different life histories might be affected by annual variability in precipitation in different ways. The Sierra Nevada of California, United States, experienced some of the driest and wettest years on record in the early 21st Century, with...
Groundwater quality near the Montebello Oil Field, Los Angeles County, California
Jennifer S. Stanton, Michael Land, Matthew K. Landon, David H. Shimabukuro, Peter B. McMahon, Tracy A. Davis, Andrew G. Hunt, Theron A. Sowers
2023, Scientific Investigations Report 2022-5128
Groundwater quality and potential sources and migration pathways of chemical constituents associated with hydrocarbon-bearing formations were assessed by the U.S. Geological Survey for the California State Water Resources Control Board Oil and Gas Regional Monitoring Program (RMP). Groundwater samples were collected as part of the RMP from 21 preexisting wells...
Groundwater quality in the Mohawk and western New York River Basins, New York, 2016
Devin L. Gaige, Tia-Marie Scott, James E. Reddy, Meaghan R. Keefe
2023, Open-File Report 2022-1021
Water samples were collected from July through December 2016 from 9 production wells and 13 domestic wells in the Mohawk River Basin, and from 17 production wells and 17 domestic wells in the western New York River Basins. The samples were collected and processed by using standard U.S. Geological Survey...
Decompression and degassing, repressurization, and regassing during cyclic eruptions at Guagua Pichincha volcano, Ecuador, 1999–2001
Heather M. Wright, Raffaello Cioni, Katharine V. Cashman, Patricia Mothes, Mauro Rosi
2023, Bulletin of Volcanology (85)
In 1999–2001, Guagua Pichincha volcano, Ecuador, produced a series of cyclic explosive and effusive eruptions. Rock samples, including dense blocks and pumiceous clasts collected during the eruption sequence, and ballistic bombs later collected from the crater floor, provide information about magma storage, ascent, decompression, degassing, repressurization, and regassing prior to...