Conference Papers
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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
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Facies identification through lithologic and geochemical observation of the Oceanic Anoxic Event 2 interval in the Cretaceous Western Interior Seaway—Examples from the Rebecca K. Bounds core Facies identification through lithologic and geochemical observation of the Oceanic Anoxic Event 2 interval in the Cretaceous Western Interior Seaway—Examples from the Rebecca K. Bounds core
No abstract available.
Authors
Jason A. Flaum, Jay Kalbas
Using the delta log R method to predict TOC in the Tuscaloosa marine shale, Mississippi, U.S.A. Using the delta log R method to predict TOC in the Tuscaloosa marine shale, Mississippi, U.S.A.
No abstract available.
Authors
Celeste Lohr, Matthew D. Merrill
Defining the Hoek-Brown constant mi for volcanic lithologies Defining the Hoek-Brown constant mi for volcanic lithologies
The empirical Hoek-Brown failure criterion is a well-known and commonly used failure criterion for both intact rocks and rock masses, especially in geological engineering. The intact criterion is calculated using experimental triaxial compression test results on intact samples while the rock mass criterion modifies the intact strength using quantified measures of the rock mass quality...
Authors
Marlène C. Villeneuve, Michael J. Heap, Lauren N. Schaefer
Progress and challenges toward the development of a uniform moment magnitude catalog for eastern Canada Progress and challenges toward the development of a uniform moment magnitude catalog for eastern Canada
No abstract available.
Authors
Allison L. Bent, Kevin Mayeda, Jorge I. Roman-Nieves, David R. Shelly, Justin Barno
Assessment of carbon dioxide enhanced oil recovery and associated carbon dioxide retention resources of the United States Assessment of carbon dioxide enhanced oil recovery and associated carbon dioxide retention resources of the United States
In 2020, the U.S. Geological Survey (USGS) completed a probabilistic assessment of the volume of technically recoverable oil resources that could be produced using current carbon dioxide enhanced oil recovery (CO2-EOR) technologies in amenable conventional oil reservoirs underlying onshore and State-owned offshore waters (herein after, onshore and State waters areas) of the conterminous...
Authors
Peter D. Warwick, Emil Attanasi, Madalyn S. Blondes, Sean T. Brennan, Marc L. Buursink, Steven M. Cahan, Colin A. Doolan, Philip A. Freeman, C. Ozgen Karacan, Celeste D. Lohr, Matthew D. Merrill, Ricardo A. Olea, Jenna L. Shelton, Ernie R. Slucher, Brian A. Varela
PHREEQ-N-AMDTreat+REYs water-quality modeling tools to evaluate acid mine drainage treatment strategies for recovery of rare-earth elements PHREEQ-N-AMDTreat+REYs water-quality modeling tools to evaluate acid mine drainage treatment strategies for recovery of rare-earth elements
The PHREEQ-N-AMDTreat+REYs water-quality modeling tools have the fundamental capability to simulate aqueous chemical reactions and predict the formation of metal-rich solids during the treatment of acid mine drainage (AMD). These new user-friendly, publicly available tools were expanded from the PHREEQ-N-AMDTreat tools to include the precipitation of rare-earth elements plus yttrium...
Authors
Charles A. Cravotta
Hydroclimate and fire paleorecords across the southern Rockies and Colorado Plateau over the common era Hydroclimate and fire paleorecords across the southern Rockies and Colorado Plateau over the common era
The southwestern US has been experiencing a severe drought and increased fire activity over the past two decades, affecting people’s health, homes, and businesses. Many individual fires occurring in the Southwest are the most severe in recorded history both in terms of dollars of damages as well as in fire extent. It is essential to be able to place the present drought and fires into the...
Authors
Natalie M. Kehrwald, Rebecca Lynn Brice
Determination and prediction of rare earth element eeochemical associations in acid mine drainage treatment wastes Determination and prediction of rare earth element eeochemical associations in acid mine drainage treatment wastes
Acid mine drainage (AMD) has been proposed by various researchers as a novel source of rare earth elements (REE), a group of elements that include critical metals for clean energy and modern technologies. REE tend to be sequestered in the Fe-Al-Mn-rich solids produced during the treatment of AMD. These solids are typically managed as waste, but could be a low-cost, readily available REE...
Authors
B.C. Hedin, Charles A. Cravotta, M.Y. Stuckman, C.L. Lopano, R.C. Capo, R.S. Hedin
Gene flow and spatial population structure of Brook Trout in a large headwater stream network in Colorado Gene flow and spatial population structure of Brook Trout in a large headwater stream network in Colorado
We studied gene flow of non-native Brook Trout Salvelinus fontinalis in a 60-km section of continuous stream network in the upper Cache la Poudre River basin, where a large-scale reclamation effort to restore federally threatened Greenback Cutthroat Trout Oncorhynchus clarkii stomias (GBCT) is taking place. This effort—the Poudre Headwaters Project—represents the most important recovery...
Authors
Audrey Harris, Matthew P. Fairchild, Sara J. Oyler-McCance, Jennifer A. Fike, Christopher Kennedy, Dana Winkleman, Yoichiro Kanno
Conservation genetics and wild trout: Evolving opportunities to support management Conservation genetics and wild trout: Evolving opportunities to support management
It is increasingly apparent that our planet is undergoing rapid, unprecedented environmental change. These changes are already impacting wild trout populations, leading to declines in occupancy and abundance across increasingly fragmented landscapes. Many changes are projected to intensify in the coming decades, which are likely to be crucial to the future of many wild populations. While...
Authors
David C. Kazyak, Shannon L. White, N. Mamoozadeh, John Hargrove, Mariah Meek
Benefits of genetic data for the design of Brook Trout translocation efforts Benefits of genetic data for the design of Brook Trout translocation efforts
With wild trout populations in decline, many conservation practitioners are evaluating the feasibility of incorporating reintroduction and genetic rescue into management frameworks. As interest in these conservation tools continues to grow, so too has the need for rigorous science to evaluate translocation success and improve the efficacy of future efforts. From this, it has become...
Authors
Shannon L. White, Thomas C Johnson, Jacob M Rash, Barbara A. Lubinski, David C. Kazyak
Preliminary national-scale seismic risk assessment of natural gas pipelines in the United States Preliminary national-scale seismic risk assessment of natural gas pipelines in the United States
Although the gas pipeline infrastructure in the United States is vulnerable to the seismic hazards of (i) strong ground shaking, and (ii) ground failures induced by surface faulting, liquefaction, or landslides, limited national guidance exists for operators to consistently evaluate the earthquake response of their pipelines. To provide additional information for stakeholders and...
Authors
N. Simon Kwong, Kishor S. Jaiswal, Nico Luco, J. W. Baker, K. A. Ludwig