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Browse more than 160,000 publications authored by our scientists over the past 100+ year history of the USGS.  Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.

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Suspended sediment and trace element transport in the Big River downstream from the Old Lead Belt in southeastern Missouri, 2018–21 Suspended sediment and trace element transport in the Big River downstream from the Old Lead Belt in southeastern Missouri, 2018–21

Lead Belt, an area of major lead mining from the 1860s until 1972 where more than 8.5 million tons of lead were mined. After active mining ceased, the effects of mining activities persisted in the Big River system because of large mine waste pile erosion, and floodplain sediment and streambank contamination along several tributaries and the main stem of the Big River. Lead-contaminated...
Authors
Kendra M. Markland, Camille E. Buckley
By
Central Midwest Water Science Center

Evaluating habitat use and relative abundance of Iowa's river otter with harvest data Evaluating habitat use and relative abundance of Iowa's river otter with harvest data

The North American river otter (Lontra canadensis) was extirpated from much of the United States in the early 20th century due to habitat loss, pollution of waterways, and overharvesting. The Iowa Department of Natural Resources began a river otter reintroduction effort in 1985, which placed otters in 14 sites across the state. Otters have since been known to occur in every county in...
Authors
Bridget A. Nixon, Vince Evelsizer, Robert W. Klaver
By
Cooperative Research Units

Onset and tempo of ignimbrite flare-up volcanism in the eastern and central Mogollon-Datil volcanic field, southern New Mexico, USA Onset and tempo of ignimbrite flare-up volcanism in the eastern and central Mogollon-Datil volcanic field, southern New Mexico, USA

The Cenozoic ignimbrite flare-up (40–18 Ma) generated multiple volcanic fields in the southwestern United States and northern Mexico resulting from asthenospheric mantle upwelling after removal of the Farallon slab. The correlation of tuffs to one another and to source calderas within these volcanic fields is essential for determining spatiotemporal patterns in volcanism and magma...
Authors
Karissa B. Vermillion, Emily Renee Johnson, Jeffrey M. Amato, Matthew T. Heizler, Jenna Lente
By
Volcano Hazards Program, Volcano Science Center

Anthropogenic and environmental risk factors of salmonid predation in a tidal freshwater delta Anthropogenic and environmental risk factors of salmonid predation in a tidal freshwater delta

Water diversions that support agricultural and municipal use result in fish mortality through entrainment and impingement. Additionally, this infrastructure may attract both predators and prey fishes, thereby increasing predation rates and prey mortality near these anthropogenic contact points. The Sacramento–San Joaquin Delta (the Delta) in California's Central Valley is a tidal...
Authors
T. Reid Nelson, Brendan Lehman, Nicholas J. Demetras, Lance Takata, Matthew J. Young, Frederick V. Feyrer, Cyril Michel
By
California Water Science Center

Refuge identification as a climate adaptation strategy to promote fish persistence during drought Refuge identification as a climate adaptation strategy to promote fish persistence during drought

Climate change is leading to global increases in extreme events, such as drought, that threaten the persistence of freshwater biodiversity. Identification and management of drought refuges, areas that promote resistance and resilience to drought, will be critical for preserving and recovering aquatic biodiversity in the face of climate change and increasing human water use. Although...
Authors
Annika W. Walters, Niall G. Clancy, Thomas P. Archdeacon, Songyan Yu, Jane S. Rogosch, E.A. Reiger
By
Cooperative Research Units

Mantle melting in regions of thick continental lithosphere: Examples from Late Cretaceous and younger volcanic rocks, Southern Rocky Mountains, Colorado (USA) Mantle melting in regions of thick continental lithosphere: Examples from Late Cretaceous and younger volcanic rocks, Southern Rocky Mountains, Colorado (USA)

Major- and trace-element data together with Nd and Sr isotopic compositions and 40Ar/39Ar age determinations were obtained for Late Cretaceous and younger volcanic rocks from north-central Colorado, USA, in the Southern Rocky Mountains to assess the sources of mantle-derived melts in a region underlain by thick (≥150 km) continental lithosphere. Trachybasalt to trachyandesite lava flows...
Authors
Lang Farmer, Leah E. Morgan, M. Cosca, James Mize, Treasure Bailey, Kenzie J. Turner, Cameron Mark Mercer, Eric T Ellison, Aaron Bell
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Geosciences and Environmental Change Science Center
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