Conference Papers
Science Quality and Integrity
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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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Environmental geochemistry of an epigenetic Pb-Zn-Ag deposit at the abandoned Cecilia mine, Puno region, Peru Environmental geochemistry of an epigenetic Pb-Zn-Ag deposit at the abandoned Cecilia mine, Puno region, Peru
The abandoned Cecilia Pb-Zn-Ag mine is located at the headwaters of the Lake Titicaca watershed in the Altiplano of Peru. The site is characterized by three months of high precipitation and nine months of limited precipitation. The environmental geochemical characterization of the abandoned mine was done to evaluate environmental risks at the site from mine wastes and mine drainage, and...
Authors
S. Palomino, Robert R. Seal,, F. Garcia, M. Ochoa, D. Machaca, A. Condorhuaman, M. Valencia
Causality-informed Bayesian inference for rapid seismic ground failure and building damage estimation Causality-informed Bayesian inference for rapid seismic ground failure and building damage estimation
Rapid and accurate estimates of seismic ground failure and building damage are beneficial to efficient emergency response and post-earthquake recovery. Traditional approaches, such as physical and geospatial models, have poor accuracy and resolution due to large uncertainties and the limited availability of informing geospatial layers. The introduction of remote sensing techniques has...
Authors
David J. Wald, Susu Xu, J. Dimasaka, H. Noh
Utilization of genetic data to inform native Brook Trout conservation in North Carolina Utilization of genetic data to inform native Brook Trout conservation in North Carolina
As North Carolina’s only native salmonid, Brook Trout Salvelinus fontinalis is a fish of considerable ecological and cultural significance in the state, but anthropogenic alterations to the landscape and introductions of nonnative salmonids have fragmented and reduced its native range. As a result, the North Carolina Wildlife Resources Commission (NCWRC) has enacted numerous efforts to...
Authors
Jacob Rash, David C. Kazyak, Shannon L. White, Barbara A. Lubinski
Opportunities to improve water quality during abandoned mine-tunnel reclamation Opportunities to improve water quality during abandoned mine-tunnel reclamation
In the western United States, bulkheads are constructed to limit drainage from abandoned, draining mine adits and to protect downstream resources from uncontrolled releases of degraded adit water. Although bulkheads improve safety and water-quality conditions at the mouth of the adit, elevated hydraulic pressure behind the bulkhead often causes continuing water-quality problems in new...
Authors
Katherine Walton-Day, James J. Gusek, Connor P. Newman
Critical ShakeCast lifeline users and their response protocols Critical ShakeCast lifeline users and their response protocols
ShakeCast is a US Geological Survey (USGS) software application that automatically retrieves ShakeMap shaking estimates and performs analyses using fragility functions for buildings and lifelines. The ShakeCast system aims to identify which facilities or lifeline segments are most likely impacted by an earthquake—and thus which ones should be prioritized for inspection and response—and...
Authors
Kuo-wan Lin, David J. Wald, Daniel Slosky, Sterling Strait, Justin Smith, Sharon Yen, Nick Burmas
Inclusive lunar exploration: Lunar Surface Science Workshop virtual session 13 Inclusive lunar exploration: Lunar Surface Science Workshop virtual session 13
This report reviews and presents findings from the Lunar Surface Science Workshop Virtual Session 13: Inclusive Lunar Exploration. The report consists of a brief introduction to the workshop, followed by summaries of the six workshop sessions, and a synthesis section discussing seven key findings.
Authors
Parvathy Prem, Kristen A. Bennett
Ecological Coastal Units – Standardized global shoreline characteristics Ecological Coastal Units – Standardized global shoreline characteristics
A new set of resources is now available that describe global shoreline characteristics. High resolution (30 m), globally comprehensive Coastal Segment Units (CSUs) and Ecological Coastal Units (ECUs) were developed in a collaboration between the U.S. Geological Survey (USGS), Esri, and the Marine Biodiversity Observation Network (MBON). The data were produced from a segmentation and
Authors
Roger Sayre, Kevin Butler, Keith Van Graafeiland, Sean Breyer, Dawn Wright
Integration of lithofacies and geochemical observation to interpret depositional processes and environments associated with carbon burial during Oceanic Anoxic Event 2 Integration of lithofacies and geochemical observation to interpret depositional processes and environments associated with carbon burial during Oceanic Anoxic Event 2
No abstract available.
Authors
Jason A. Flaum, Justin E. Birdwell, Katherine L. French
Lithologic and geochemical observations of the lower Eagle Ford from the USGS GC-2 core in the East Texas Basin Lithologic and geochemical observations of the lower Eagle Ford from the USGS GC-2 core in the East Texas Basin
No abstract available.
Authors
Jason A. Flaum, Stanley T. Paxton, Justin E. Birdwell, Katherine L. French
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 D. 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