VS30 and Dominant Site Frequency (fd) as Provisional Station ML Corrections (dML) in California
Alan Yong, Elizabeth S. Cochran, Jennifer Andrews, Kenneth Hudson, Ellen Yu, Antony Martin, Julie A. Herrick, Jessica Dozal
2021, Bulletin of the Seismological Society of America (111) 61-76
New seismic stations added to a regional seismic network cannot be used to calculate local magnitude (ML">ML) until a revised regionwide amplitude decay function is developed. Each station must record a minimum...
Trends in nitrogen, phosphorus, and sediment concentrations and loads in streams draining to Lake Tahoe, California, Nevada, USA
Joseph L. Domagalski, Eric D. Morway, Nancy L. Alvarez, Juliet Hutchins, Michael R. Rosen, Robert Coats
2021, Science of the Total Environment (STOTEN) (752)
Lake Tahoe, a large freshwater lake of the eastern Sierra Nevada in California and Nevada, has 63 tributaries that are sources of nutrients and sediment to the lake. The Tahoe watershed is relatively small, and the surface area of the lake occupies about 38% of the watershed area (1313 km2). Only...
Winter severity, fish community, and availability to traps explain most of the variability in estimates of adult sea lamprey in Lake Superior
Nicholas S. Johnson, Jean V. Adams, Gale Bravener, Jessica Barber, Ted Treska, Michael J Siefkes
2021, Journal of Great Lakes Research (47) S347-S356
Animal populations are assessed to estimate rates of artificial and natural mortality at ecologically relevant spatial and temporal scales to develop exploitation quotas. But how the population’s natural mortality rate and how the ability to observe the population changes through time are poorly understood in most invasive fishes, despite efforts...
Detrital zircon age spectra of middle and upper Eocene outcrop belts, U.S. Gulf Coast region
William H. Craddock, James L. Coleman Jr., Andrew R.C. Kylander-Clark
2021, Basin Research (33) 250-269
Recently reported detrital zircon (DZ) data help to associate the Paleogene strata of the Gulf of Mexico region to various provenance areas. By far, recent work has emphasised upper Paleocene-lower Eocene and upper Oligocene strata that were deposited during the two episodes of the highest sediment...
Geomorphological mapping and anthropogenic landform change in an urbanizing watershed using structure-from-motion photogrammetry and geospatial modeling techniques
Peter G. Chirico, Sarah E. Bergstresser, Jessica D. DeWitt, Marissa Ann Alessi
2021, Journal of Maps (17) 241-252
Increasing urbanization and suburban growth in cities globally has highlighted the importance of land planning using detailed geomorphologic maps that depict anthropogenic landform changes. Such mapping provides information crucial for land management, hazard identification, and the management of the challenges arising from urbanization. The development and use...
Two-event genesis of Butte lode veins: Geologic and geochronologic evidence from ore veins, dikes, and host plutons
Karen Lund, Ryan J. McAleer, John N. Aleinikoff, Michael Cosca
2021, Conference Paper, Proceedings of the Montana Mining and Mineral Symposium 2019
The long-standing ore-genesis model for world-class deposits of the Butte mining district, Montana, is of deep pre-Main Stage porphyry Cu-Mo and overlying Main Stage Ag-Zn-Cu-zoned lode veinsformed from discrete hydrothermal systems related to rhyolite dikes. The lode-specific model describes metals zones that formed in the lode veins as hydrothermal processes...
Lake Andrei: A pliocene pluvial lake in Eureka Valley, Eastern California
Jeffrey R. Knott, Elmira Wan, Alan L. Deino, Mitch Casteel, Marith C. Reheis, Fred Phillips, Laura Walkup, Kyle McCarty, David N. Manoukian, Ernest Nunez
2021, Book chapter, From saline to freshwater: The diversity of western lakes in space and time
We used geologic mapping, tephrochronology and 40Ar/39Ar dating to describe evidence of a ca. 3.5 Ma pluvial lake in Eureka Valley, eastern California, that we informally name herein Lake Andrei. We identified six different tuffs in the Eureka Valley drainage basin including two previously undescribed tuffs: the 3.509 ± 0.009...
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...
Geothermal play fairway analysis of the Sou Hills, northern Nevada: A major quaternary accommodation zone in the Great Basin region
James E. Faulds, Andrew J. Sadowski, Mark F. Coolbaugh, Drew L. Siler
2020, Conference Paper, Geothermal resources council transactions
To facilitate discovery and development of blind geothermal systems in the Great Basin region, as well as assessment of known systems with surface hot springs, a play fairway approach was developed to evaluate and integrate multiple geologic and geophysical parameters for...
Energy and minerals division tight oil and gas committee: Activities and commodity report for 2019-2020
Justin E. Birdwell, Kent Bowker, Ben Burke, Thomas Chidsey, Ursula Hammes, Bo Henk, Zachary Hollon, Shu Jiang, Peng Li, Kristen R. Marra, Jock McCracken, Richard Nyahay, Abbas Seyedolali, Katie Schmid, Beau Tinnin, Katherine J. Whidden
2020, Report
In 2019, total daily tight oil and gas production increased in the United States month over month, with annualized growth of 14% for oil and 12% for gas. Those gains leveled off in the first quarter of 2020 due to aggressive price competition and increases in international production. Then came...
Potentiometric surface maps of selected confined aquifers in southern Maryland and Maryland's eastern shore, 2019
Andrew W. Staley, David C. Andreasen, Elizabeth H. Marchand
2020, Open-File Report 20-02-01
This report presents potentiometric-surface maps of the Aquia and Magothy aquifers and the Upper Patapsco, Lower Patapsco, and Patuxent aquifer systems using water levels measured during the fall season of 2019. The potentiometric surface maps show water levels ranging from 56 feet above sea level to 163 feet below sea...
Case study 1: Acoustic Surveys at Fort Drum Military Installation – the Value of Long-term Monitoring
W. Mark Ford, Christopher A. Dobony, David S. Jachowski, Laci S. Coleman, Tomas Nocera, Eric R. Britzke
2020, Book chapter, Bat echolocation research: A handbook for planning and conducting acoustic studies
Prior to the advent of white-nose syndrome (WNS), most bat conservation in the eastern United States consisted of one issue: the known or suspected presence of the endangered Indiana bat (Myotis sodalis). The National Environmental Policy Act and the Endangered Species Act requires Department of Defense land managers to prioritize...
Smallmouth buffalo (Ictiobus bubalus) growth across a 1200km human use and ecological disturbance gradient in the Upper Mississippi River System
Brian Ickes
2020, Report
Smallmouth buffalo (Ictiobus bubalus) is a common and widely distributed large-bodied species of the family Catostomidae. It inhabits large rivers and reservoirs of the eastern continental United States (east of the continental Divide) and is most abundant and common in the large rivers of the Midwest and Central Plains,...
Geologic map of the Dog River and northern part of the Badger Lake 7.5′ quadrangles, Hood River County, Oregon
Jason D. McClaughry, William E. Scott, Carlie J. M. Duda, Richard M. Conrey
2020, Geological Map 126
The Dog River and northern part of the Badger Lake 7.5' quadrangles encompasses an area of ~201 km2 (77.6 mi2) of the High Cascades of north-central Oregon, lying across the eastern slopes of Mount Hood volcano (Figure 1-1; Plate 1; referred to herein as Dog River–Badger Lake area). Mount Hood,...
Reconnaissance map of the Cenozoic geology in the Carlin basin area, Elko and Eureka counties, Nevada
Alan R. Wallace
2020, Nevada Bureau of Mines and Geology Open File Report 2020-02
The middle Miocene Carlin sedimentary basin encompasses a large area between the Adobe Range to the east, the Piñon Range to the south, the southern Independence Mountains and Marys Mountain to the west, and Swales Mountain to the north. The town of Carlin is in the southern part of the...
New operational national satellite burned area product
Todd Hawbaker, Melanie K. Vanderhoof, Gail L. Schmidt, Yen-Ju G. Beal, Joshua J. Picotte, Joshua Takacs, Jeff T. Falgout, John L. Dwyer
2020, Report
Introduction Lack of consistent spatial and temporal fire information with relevant spatial resolution hinders land management and broad-scale assessments of fire activity, especially in the eastern United States and the Great Plains where fi re is important ecologically and culturally. Remote sensing can be used to monitor fi re activity, augment...
Introduction of the Oriental Weatherfish, Misgurnus anguillicaudatus (Cantor, 1842) in the United States
Amy J. Benson
2020, Newsletter, Invasive and Introduced Species Section Newsletter
Although this fish had been present in the then United States (US) territory of Hawaii since the late 19th century, a growing number of collections in the contiguous US over a century later in the 2000s is noteworthy. The Oriental Weatherfish, also often referred to as the weather loach...
Changing storm conditions in response to projected 21st century climate change and the potential impact on an arctic barrier island–lagoon system—A pilot study for Arey Island and Lagoon, eastern Arctic Alaska
Li H. Erikson, Ann E. Gibbs, Bruce M. Richmond, Curt D. Storlazzi, Benjamin M. Jones, Karin Ohman
2020, Open-File Report 2020-1142
Executive SummaryArey Lagoon, located in eastern Arctic Alaska, supports a highly productive ecosystem, where soft substrate and coastal wet sedge fringing the shores are feeding grounds and nurseries for a variety of marine fish and waterfowl. The lagoon is partially protected from the direct onslaught of Arctic Ocean waves by...
Optimization of salt marsh management at the Stewart B. McKinney National Wildlife Refuge, Connecticut, through use of structured decision making
Laurel E. Low, Hilary A. Neckles, James E. Lyons, Jessica L. Nagel, Susan C. Adamowicz, Toni Mikula, Kristina Vagos, Richard Potvin
2020, Open-File Report 2020-1139
Structured decision making is a systematic, transparent process for improving the quality of complex decisions by identifying measurable management objectives and feasible management actions; predicting the potential consequences of management actions relative to the stated objectives; and selecting a course of action that maximizes the total benefit achieved and balances...
Bedrock geologic map of the Springfield 7.5- x 15-minute quadrangle, Windsor County, Vermont, and Sullivan County, New Hampshire
Gregory J. Walsh, Peter M. Valley, Thomas R. Armstrong, Nicholas M. Ratcliffe, Arthur J. Merschat, Beau J. Gentry
2020, Scientific Investigations Map 3462
The bedrock geology of the 7.5- by 15-minute Springfield quadrangle consists of highly deformed and metamorphosed Mesoproterozoic through Devonian metasedimentary and meta-igneous rocks. In the west, Mesoproterozoic gneisses of the Mount Holly Complex are the oldest rocks and form the eastern side of the Chester dome. The Moretown slice structurally...
A probabilistic assessment of tephra-fall hazards at Hanford, Washington, from a future eruption of Mount St. Helens
Larry G. Mastin, Alexa R. Van Eaton, Hans F. Schwaiger
2020, Open-File Report 2020-1133
Hanford, Washington (USA) is the construction site of a multi-billion-dollar high-level nuclear waste treatment facility. This site lies 200 kilometers (km) east of Mount St. Helens (MSH), the most active volcano in the contiguous United States. Tephra from a future MSH eruption could pose a hazard to the air intake...
The Long-term effect of bleeding for Limulus amebocyte lysate on annual survival and recapture of tagged horseshoe crabs
David R. Smith, Joshua Newhard, Conor P. McGowan, C. Alyssa Butler
2020, Frontiers in Marine Science (7)
In the U.S., 525,000 horseshoe crabs (Limulus polyphemus) per year have been captured during 2013–2017, brought to biomedical facilities, and bled to produce Limulus amebocyte lysate (LAL), then mostly released to the area of capture. The Atlantic States Marine Fisheries Commission estimates short-term bleeding-induced mortality to be 15% (4% to...
Estimating the invasion extent of Asian swamp eel (Monopterus: Synbranchidae) in an altered river of the south-eastern United States
J. R. Johnson, A. T. Taylor, James M. Long
2020, Marine and Freshwater Research (72) 811-822
The first reported invasion of Asian swamp eels (Monopterus albus, ASE) in the continental United States was in the state of Georgia in 1994. This population was first discovered within several ponds on a private nature centre, but the ponds drained via an outflow pipe into marsh habitats...
Geologic map and borehole stratigraphy of Hinkley Valley and vicinity, San Bernardino County, California
David M. Miller, Victoria E. Langenheim, Elizabeth K. Haddon
2020, Scientific Investigations Map 3458
Hinkley Valley, in the central to western Mojave Desert of southeastern California, has a long historical record owing to its position as a crossroads for rail and road traffic and its position adjacent to the Mojave River. Subflow in the Mojave River provided groundwater recharge that maintained water consumption and...
Simulation of groundwater flow in the regional aquifer system on Long Island, New York, for pumping and recharge conditions in 2005–15
Donald A. Walter, John P. Masterson, Jason S. Finkelstein, Monti, Paul E. Misut, Michael N. Fienen
2020, Scientific Investigations Report 2020-5091
A three-dimensional groundwater-flow model was developed for the aquifer system of Long Island, New York, to evaluate (1) responses of the hydrologic system to changes in natural and anthropogenic hydraulic stresses, (2) the subsurface distribution of groundwater age, and (3) the regional-scale distribution of groundwater travel times and the source...
