Method development for a short-term 7-day toxicity test with unionid mussels
Ning Wang, James L. Kunz, Douglas K. Hardesty, Jeffery A. Steevens, Teresa J. Norberg-King, Edward J. Hammer, Candice R. Bauer, Tom Augspurger, Suzanne Dunn, David Martinez, M. Christopher Barnhart, Jordan Murray, Marcus Bowersox, John F. Roberts, Robert B. Bringolf, Robert Ratajczak, Serena Ciparis, W. Gregory Cope, Sean B. Buczek, Daniel Farrar, Lauren May, Mailee Garton, Patricia L. Gillis, James Bennett, Joseph Salerno, Brian Hester, Richard Lockwood, Christopher Tarr, Dennis McIntyre, Jonathan Wardell
2021, Environmental Toxicology and Chemistry (40) 3392-3409
The US Environmental Protection Agency's short-term freshwater effluent test methods include a fish (Pimephales promelas), a cladoceran (Ceriodaphnia dubia), and a green alga (Raphidocelis subcapitata). There is a recognized need for additional taxa to accompany the three standard species for effluent testing. An appropriate additional taxon...
Assessment of diel cycling in nutrients and trace elements in the Eagle River Basin, 2017–18
Rodney J. Richards, Mark F. Henneberg
2021, Scientific Investigations Report 2021-5066
Diel cycles are known to occur in all types of waters, and increasing studies indicate routine water samples may not provide an accurate snapshot in concentrations of trace elements and nutrients. Diel behavior in neutral to alkaline pH ranges is independent of streamflow variability and concentration. Extensive historical U.S. Geological...
Geomorphic history of Lake Manix, Mojave Desert, California: Evolution of a complex terminal lake basin
Marith C. Reheis, David M. Miller, James B. Paces, Charles G. Oviatt, Joanna R. Redwine, Darrell Kaufman, Jordon Bright, Elmira Wan
2021, Geomorphology (392)
The US Environmental Protection Agency's short-term freshwater effluent test methods include a fish (Pimephales promelas), a cladoceran (Ceriodaphnia dubia), and a green alga (Raphidocelis subcapitata). There is a recognized need for additional taxa to accompany the three standard species for effluent testing. An appropriate additional taxon...
3-D Modeling of the Duluth Complex from geophysical data
Dana E. Peterson, Paul A. Bedrosian, Carol A. Finn
2021, Conference Paper, 67th Institute on Lake Superior Geology Proceedings
The Mesoproterozoic Duluth Complex in northeastern Minnesota is one of the major plutonic components of the Midcontinent Rift System and hosts a variety of copper-nickel sulfide and platinum-group element deposits. The Duluth Complex is composed of a series of individual mafic and felsic intrusions emplaced 1110-1098 Ma within Paleoproterozoic sedimentary...
Pilot-scale expanded assessment of inorganic and organic tapwater exposures and predicted effects in Puerto Rico, USA
Paul M. Bradley, Ingrid Y. Padilla, Kristin M. Romanok, Kelly Smalling, Michael J. Focazio, Sara E. Breitmeyer, Mary C. Cardon, Justin M. Conley, Nicola Evans, Carrie E. Givens, James L. Gray, L. Earl Gray, Phillip C. Hartig, Michelle L. Hladik, Christopher P. Higgins, Luke R. Iwanowicz, Rachael F. Lane, Keith A. Loftin, R. Blaine McCleskey, Carrie A. McDonough, Elizabeth Medlock-Kakaley, Shannon M. Meppelink, Christopher P. Weis, Vickie S. Wilson
2021, Environment International (788)
A pilot-scale expanded target assessment of mixtures of inorganic and organic contaminants in point-of-consumption drinking water (tapwater, TW) was conducted in Puerto Rico (PR) to continue to inform TW exposures and corresponding estimations of cumulative human-health risks across the US. In August 2018, a spatial synoptic pilot assessment of than...
Volatile metal emissions from volcanic degassing and lava–seawater interactions at Kīlauea Volcano, Hawai’i
E. Mason, P.E. Wieser, E. J. Liu, M. Edmonds, E. Ilyinskaya, R.C.W. Whitty, T.A. Mather, Tamar Elias, Patricia A. Nadeau, C. Wilkes, A.J.S. McGonigle, T.D. Pering, F.M. Mims, Christoph Kern, David J. Schneider, C. Oppenheimer
2021, Communications Earth and Environment (2)
Volcanoes represent one of the largest natural sources of metals to the Earth’s surface. Emissions of these metals can have important impacts on the biosphere as pollutants or nutrients. Here we use ground- and drone-based direct measurements to compare the gas and particulate chemistry of the...
Global resorption efficiencies of trace elements in leaves of terrestrial plants
Hao Chen, Sasha C. Reed, Xiaotao Lü, Kongcao Xiao, Kelin Wang, Dejun Li
2021, Functional Ecology (35) 1596-1602
Leaf nutrient resorption is a critical nutrient conservation strategy. Previous studies focus mainly on resorption patterns of macronutrients, but resorption patterns of trace elements remain poorly understood.A meta-analysis was conducted to explore the general patterns of the leaf resorption of eight trace elements [i.e. copper (Cu), molybdenum (Mo), zinc...
Public and private tapwater: Comparative analysis of contaminant exposure and potential risk, Cape Cod, Massachusetts, USA
Paul M. Bradley, Denis R. LeBlanc, Kristin M. Romanok, Kelly Smalling, Michael J. Focazio, Mary C. Cardon, Jimmy Clark, Justin M. Conley, Nicola Evans, Carrie E. Givens, James L. Gray, L. Earl Gray, Phillip C. Hartig, Christopher P. Higgins, Michelle Hladik, Luke R. Iwanowicz, Keith A. Loftin, R. Blaine McCleskey, Carrie A. McDonough, Elizabeth Medlock-Kakaley, Christopher P. Weis, Vickie S. Wilson
2021, Environmental International (152)
BackgroundHumans are primary drivers of environmental contamination worldwide, including in drinking-water resources. In the United States (US), federal and state agencies regulate and monitor public-supply drinking water while private-supply monitoring is rare; the current lack of directly...
Petrology and geochronology of 1.48 to 1.45 Ga igneous rocks in the St. Francois Mountains terrane, southeast Missouri
Edward A. du Bray, John N. Aleinikoff, Warren C. Day, Leonid A. Neymark, Seth D. Burgess
2021, Professional Paper 1866
The igneous geology of the St. Francois Mountains terrane in southeast Missouri is dominated by the products of 1.48 to 1.45 billion year old volcanic and plutonic magmatism but also includes volumetrically minor, compositionally bimodal contributions added during plutonism between 1.34 and 1.27 billion years ago. The 1.48 to 1.45...
Duration of hydrothermal alteration and mineralization of the Don Manuel porphyry copper system, central Chile
Amy K. Gilmer, R. Stephen J. Sparks, Dan N. Barfod, Emily Brugge, Catherine Annen, Ian Parkinson
2021, Minerals (11)
The Don Manuel porphyry copper system, located in the Miocene–Pliocene metallogenic belt of central Chile, contains spatially zoned alteration styles common to other porphyry copper deposits including extensive potassic alteration, propylitic alteration, localized sericite-chlorite alteration and argillic alteration but lacks pervasive hydrolytic alteration typical of some deposits. It is one...
The critical minerals initiative of the U.S. Geological Survey’s mineral deposit database project: USMIN
Jeffrey L. Mauk, Nick A Karl, Carma A. San Juan, Liam Dandurand Knudsen, German Schmeda, Clayton Robert Forbush, Bradley S. Van Gosen, Morgan Mullins, Patrick Christopher Scott
2021, Mining, Metallurgy & Exploration (MME) (38) 775-797
The objective of the US Geological Survey’s mineral deposit database project (USMIN) is to develop a comprehensive twenty-first century geospatial database that is the authoritative source of the most important mines, mineral deposits, and mineral districts of the US. Since May 2017, the project has focused...
Water-quality change following remediation using structural bulkheads in abandoned draining mines, upper Arkansas River and upper Animas River, Colorado USA
Katherine Walton-Day, M. Alisa Mast, Robert L. Runkel
2021, Applied Geochemistry (127)
Water-quality effects after remediating abandoned draining mine tunnels using structural bulkheads were examined in two study areas in Colorado, USA. A bulkhead was installed in the Dinero mine tunnel in 2009 to improve water quality in Lake Fork Creek, a tributary to the upper Arkansas River....
Porphyry and epithermal mineral deposits
John H Dilles, David A. John
2021, Book chapter, Encyclopedia of geology (secind editon)
Porphyry and epithermal mineral deposits form large economic ore bodies that provide the global economy with copper, molybdenum, gold, silver and other byproducts (Re, Te, Se). They form in the upper crust and are related to sulfur- and water-rich intermediate to silicic magmatic sources of hydrothermal fluids that move upward...
Terrestrial ecological risk analysis via dietary exposure at uranium mine sites in the Grand Canyon watershed (Arizona, USA)
Jo Ellen Hinck, Danielle M. Cleveland, Bradley E. Sample
2021, Chemosphere (265)
The U.S. Department of the Interior recently included uranium (U) on a list of mineral commodities that are considered critical to economic and national security. The uses of U for commercial and residential energy production, defense applications, medical device technologies, and...
Hydrogeochemistry in the Yukon-Tanana Upland region of east-central Alaska: Possible exploration tool for porphyry-style deposits
Karen D. Kelley, Garth E. Graham
2021, Applied Geochemistry (124)
A hydrogeochemical study using high resolution ICP-MS was undertaken at the Taurus and other porphyry Cu-Mo(-Au) occurrences and Ag-Au-Cu (+/- Pb, Zn) occurrences with epithermal-style characteristics in the Yukon-Tanana upland region of eastern Alaska. Surface water samples were collected from 30...
Elemental and radionuclide exposures and uptakes by small rodents, invertebrates, and vegetation at active and post-production uranium mines in the Grand Canyon watershed
Danielle M. Cleveland, Jo Ellen Hinck, Julia S. Lankton
2021, Chemosphere (263)
The effects of breccia pipe uranium mining in the Grand Canyon watershed (Arizona) on ecological and cultural resources are largely unknown. We characterized the exposure of biota to uranium and co-occurring ore body elements during active ore production and at a site where ore production had recently concluded. Our results...
Contrasting mobilization of elements in contact with sediment from Lake Roosevelt and the Upper Columbia River, Washington, USA
Anthony Paulson, Stephen E. Cox
2021, Applied Geochemistry (91) 149-161
Trace element contamination is known to be widely present in sediment of Lake Roosevelt and the riverine reach of the Columbia River in Washington State, USA due to discharges from several smelters and numerous mines dating back to the mid-1800's. In...
Focus areas for data acquisition for potential domestic resources of 11 critical minerals in the conterminous United States, Hawaii, and Puerto Rico—Aluminum, cobalt, graphite, lithium, niobium, platinum-group elements, rare earth elements, tantalum, tin, titanium, and tungsten
Jane M. Hammarstrom, Connie L. Dicken, Warren C. Day, Albert H. Hofstra, Benjamin J. Drenth, Anjana K. Shah, Anne E. McCafferty, Laurel G. Woodruff, Nora K. Foley, David A. Ponce, Thomas P. Frost, Lisa L. Stillings
2020, Open-File Report 2019-1023-B
In response to a need for information on potential domestic sources of critical minerals, the Earth Mapping Resources Initiative (Earth MRI) was established to identify and prioritize areas for acquisition of new geologic mapping, geophysical data, and elevation data to improve our knowledge of the geologic framework of the United...
Alkalic-type epithermal gold deposit model
Karen D. Kelley, Paul G. Spry, Virginia T. McLemore, David L. Fey, Eric D. Anderson
2020, Scientific Investigations Report 2010-5070-R
This report summarizes the primary characteristics of alkalic-type epithermal gold (Au) deposits and provides an updated descriptive model. These deposits, primarily of Mesozoic to Neogene age, are among the largest epithermal gold deposits in the world. Considered a subset of low-sulfidation epithermal deposits, they are spatially and genetically linked to...
Groundwater quality in relation to drinking water health standards and hydrogeologic and geochemical characteristics for 47 domestic wells in Potter County, Pennsylvania, 2017
Daniel G. Galeone, Charles A. Cravotta III, Dennis W. Risser
2020, Scientific Investigations Report 2020-5038
As part of a regional effort to characterize groundwater in rural areas of Pennsylvania, water samples from 47 domestic wells in Potter County were collected from May through September 2017. The sampled wells had depths ranging from 33 to 600 feet in sandstone, shale, or siltstone aquifers. Groundwater samples were...
Sediment record of mining legacy and water quality from a drinking-water reservoir, Aztec, New Mexico, USA
Johanna M. Blake, Jeb E. Brown, Christina L. Ferguson, Rebecca J. Bixby, Naomi T. Delay
2020, Environmental Earth Sciences (79)
The record of mining legacy and water quality was investigated in sediments collected in 2018 from four trenches in the Aztec, New Mexico, drinking-water reservoir #1. Bulk chemical analysis of sediments with depth in the reservoir revealed variable trace-element (uranium, vanadium, arsenic, copper, sulfur, silver, lead,...
Mineral deposits of the Mesoproterozoic Midcontinent Rift system in the Lake Superior region – A space and time classification
Laurel G. Woodruff, Klaus J. Schulz, Suzanne W. Nicholson, Connie L. Dicken
2020, Ore Geology Reviews (126)
The Mesoproterozoic Midcontinent Rift System (MRS) of North America hosts a diverse suite of magmatic and hydrothermal mineral deposits in the Lake Superior region where rift rocks are exposed at or near the surface. Historically, hydrothermal deposits, such as Michigan’s native copper deposits and the White Pine sediment-hosted stratiform...
A synthesis of ten years of chemical contaminant monitoring data in National Park Service - Southeast and southwest Alaska networks
Mary Rider, Dennis Apeti, Annie Jacob, Kimani L. Kimbrough, Erik Davenport, Michael R. Bower, Heather A Colletti, Daniel Esler
2020, NOAA Technical Memorandum NOS/MCCOS 277
With the exception of PAHs and trace metals, which were detected at 100% of the sites, all of the other contaminants were detected at varying frequencies. PBBs, Mirex and Endosulfans were not detected in any of the samples and Chlorpyrifos was only detected in five samples across four sites. Chlordanes...
Assessing the influence of natural copper-nickel-bearing bedrocks of the Duluth Complex on water quality in Minnesota, 2013–15
Sarah M. Elliott, Perry M. Jones, Laurel G. Woodruff, Carrie E. Jennings, Aliesha L. Krall, Daniel L. Morel
2020, Scientific Investigations Report 2020-5039
The U.S. Geological Survey, in cooperation with the University of Minnesota-Duluth Natural Resources Research Institute, completed an assessment of regional water quality in areas of potential base-metal mining in Minnesota. Bedrock, soil, streambed sediment, and surface-water samples were collected in three watersheds that cross the basal part of the Duluth...
Groundwater quality in relation to drinking water health standards and geochemical characteristics for 54 domestic wells in Clinton County, Pennsylvania, 2017
John W. Clune, Charles A. Cravotta III
2020, Scientific Investigations Report 2020-5022
Despite the reliance on groundwater by approximately 2.4 million rural Pennsylvania residents, publicly available data to characterize the quality of private well water are limited. As part of a regional effort to characterize groundwater in rural areas of Pennsylvania, samples from 54 domestic wells in Clinton County were collected and...
