Sedimentary response to orogenic exhumation in the northern Rocky Mountain Basin and Range province, Flint Creek basin, west-central Montana
R.A. Portner, M.S. Hendrix, J.C. Stalker, D. P. Miggins, S.D. Sheriff
2011, Canadian Journal of Earth Sciences (48) 1131-1153
Middle Eocene through Upper Miocene sedimentary and volcanic rocks of the Flint Creek basin in western Montana accumulated during a period of significant paleoclimatic change and extension across the northern Rocky Mountain Basin and Range province. Gravity modelling, borehole data, and geologic mapping from the Flint Creek basin indicate that...
Helicopter magnetic and electromagnetic surveys at Mounts Adams, Baker and Rainier, Washington: implications for debris flow hazards and volcano hydrology
Carol A. Finn, Maria Deszcz-Pan
2011, Conference Paper, International Workshop on Gravity, Electrical & Magnetic Methods and Their Applications, Beijing, China, October 10-13, 2011
High‐resolution helicopter magnetic and electromagnetic (HEM) data flown over the rugged, ice‐covered Mt. Adams, Mt. Baker and Mt. Rainier volcanoes (Washington), reveal the distribution of alteration, water and ice thickness essential to evaluating volcanic landslide hazards. These data, combined with geological mapping and rock property measurements, indicate the presence of...
Estimation of mussel population response to hydrologic alteration in a southeastern U.S. stream
James T. Peterson, J.M. Wisniewski, C.P. Shea, Jackson C. Rhett
2011, Environmental Management (48) 109-122
The southeastern United States has experienced severe, recurrent drought, rapid human population growth, and increasing agricultural irrigation during recent decades, resulting in greater demand for the water resources. During the same time period, freshwater mussels (Unioniformes) in the region have experienced substantial population declines. Consequently, there is growing interest in...
Geochemical heterogeneity in a small, stratigraphically complex moraine aquifer system (Ontario, Canada): Interpretation of flow and recharge using multiple geochemical parameters
R.L. Stotler, S.K. Frape, H.T. El Mugammar, C. Johnston, I. Judd-Henrey, F.E. Harvey, R. Drimmie, J.P. Jones
2011, Hydrogeology Journal (19) 101-115
The Waterloo Moraine is a stratigraphically complex system and is the major water supply to the cities of Kitchener and Waterloo in Ontario, Canada. Despite over 30 years of investigation, no attempt has been made to unify existing geochemical data into a single database. A composite view of the moraine geochemistry...
Influence of dissolved organic matter on the environmental fate of metals, nanoparticles, and colloids
George R. Aiken, Heileen Hsu-Kim, Joseph N. Ryan
2011, Environmental Science & Technology (45) 3196-3201
We have known for decades that dissolved organic matter (DOM) plays a critical role in the biogeochemical cycling of trace metals and the mobility of colloidal particles in aquatic environments. In recent years, concerns about the ecological and human health effects of metal-based engineered nanoparticles released into natural waters have...
The need to consider temporal variability when modelling exchange at the sediment-water interface
Donald O. Rosenberry
2011, Conference Paper, Conceptual and modelling studies of integrated groundwater, surface water, and ecological systems
Most conceptual or numerical models of flows and processes at the sediment-water interface assume steady-state conditions and do not consider temporal variability. The steady-state assumption is required because temporal variability, if quantified at all, is usually determined on a seasonal or inter-annual scale. In order to design models that can...
Genetic and environmental influences on leaf phenology and cold hardiness of native and introduced riparian trees
Jonathan M. Friedman, J. E. Roelle, B.S. Cade
2011, International Journal of Biometeorology (55) 775-787
To explore the roles of plasticity and genetic variation in the response to spatial and temporal climate variation, we established a common garden consisting of paired collections of native and introduced riparian trees sampled along a latitudinal gradient. The garden in Fort Collins, Colorado (latitude 40.6°N), included 681 native plains...
Bibliography of the Gulf of Mexico coastal plain coal geology
Robert W. Hook, Peter D. Warwick, Alexander W. Karlsen, Susan J. Tewalt
Peter D. Warwick, Alexander K. Karlsen, Matthew D. Merrill, Susan J. Tewalt, editor(s)
2011, Book chapter, Geologic assessment of coal in the Gulf of Mexico coastal plain
Unlike scientific literature pertaining to most other coal-bearing regions in the conterminous United States, this bibliography on the coal geology of the Gulf Coastal Plain is dominated by work from the late 20th century. Although coals of this region were mined commercially in the late 1800s and early 1900s, they...
Moments, magnitudes, and radiated energies of non-volcanic tremor near Cholame, CA, from ground motion spectra at UPSAR
Joe B. Fletcher, Art McGarr
2011, Geophysical Research Letters (38)
By averaging the spectra of events within two episodes of tremor (on Jan. 21 and 24, 2005) across the 12 stations of UPSAR, we improved the S/N sufficiently to define source spectra. Analysis of eleven impulsive events revealed attenuation-corrected spectra of displacement similar to those of earthquakes, with a low-frequency...
Observations of coarse sediment movements on the mixed beach of the Elwha Delta, Washington
I.M. Miller, Jonathan A. Warrick, C. Morgan
2011, Marine Geology (282) 201-214
Mixed beaches, with poorly sorted grains of multiple sizes, are a common and globally distributed shoreline type. Despite this, rates and mechanisms of sediment transport on mixed beaches are poorly understood. A series of tracer deployments using native clasts implanted with Radio Frequency Identifier (RFID) tags was used to develop...
Coal resources for part of the Wilcox group (Paleocene-Eocene), northeast Texas
Peter D. Warwick, Claire E. Aubourg, Steven M. Podwysocki, Adam C. Schultz
Peter D. Warwick, Alexander K. Karlsen, Matthew D. Merrill, Brett J. Valentine, editor(s)
2011, Book chapter, Geologic assessment of coal in the Gulf of Mexico coastal plain
The Wilcox Group of northeast Texas contains shallow (less than 500 ft) coal deposits that are mined for use in mine-mouth electric power generating plants. The coal deposits, which are lignite in apparent rank (Pierce et al., 2011), are separated from similar shallow coal deposits in the Sabine uplift area...
Waste isolation and contaminant migration - Tools and techniques for monitoring the saturated zone-unsaturated zone-plant-atmosphere continuum
Brian J. Andraski, David A. Stonestrom
T.J. Nicholson, H.D. Arlt, editor(s)
2011, Conference Paper, Proceedings of the workshop on engineered barrier performance related to low-level radioactive waste, decommissioning, and uranium mill tailings facilities (NUREG/CP-0195)
In 1976 the U.S. Geological Survey (USGS) began studies of unsaturated zone hydrology next to the Nation’s first commercial disposal facility for low-level radioactive waste (LLRW) near Beatty, NV. Recognizing the need for long-term data collection, the USGS in 1983 established research management areas in the vicinity of the waste-burial...
Scenarios for coastal vulnerability assessment
Robert J. Nicholls, Colin D. Woodroffe, Virginia Burkett, John Hay, Poh Poh Wong, Leonard Nurse
Eric Wolanski, Donald S. McLusky, editor(s)
2011, Book chapter, Treatise on estuarine and coastal science: Ecological economics of estuaries and coasts
Coastal vulnerability assessments tend to focus mainly on climate change and especially on sea-level rise. Assessment of the influence of nonclimatic environmental change or socioeconomic change is less well developed and these drivers are often completely ignored. Given that the most profound coastal changes of the twentieth century due to...
Early detection and rapid response
Randy G. Westbrooks, Robert E. Eplee
Daniel Simberloff, Marcel Rejmánek, editor(s)
2011, Book chapter, Encyclopedia of biological invasions
Prevention is the first line of defense against introduced invasive species - it is always preferable to prevent the introduction of new invaders into a region or country. However, it is not always possible to detect all alien hitchhikers imported in cargo, or to predict with any degree of certainty...
Lead in birds
J. Christian Franson, Deborah J. Pain
W. Nelson Beyer, James Parnell Meador, editor(s)
2011, Book chapter, Environmental contaminants in biota: Interpreting tissue concentrations
Lead is a highly toxic heavy metal that acts as a nonspecific poison affecting all body systems and has no known biological requirement. Absorption of low concentrations may result in a wide range of sublethal effects in animals, and higher concentrations may result in mortality (Demayo et al. 1982).Lead has...
Organic sedimentary deposits in Titan's dry lakebeds: Probable evaporite
J. W. Barnes, J. Bow, J. Schwartz, R. H. Brown, J.M. Soderblom, A. G. Hayes, G. Vixie, Stéphane Le Mouélic, S. Rodriguez, Christophe Sotin, R. Jaumann, K. Stephan, L.A. Soderblom, Roger N. Clark, B. J. Buratti, K. H. Baines, P. D. Nicholson
2011, Icarus (216) 136-140
We report the discovery of organic sedimentary deposits at the bottom of dry lakebeds near Titan’s north pole in observations from the Cassini Visual and Infrared Mapping Spectrometer (VIMS). We show evidence that the deposits are evaporitic, making Titan just the third known...
Barriers on the brink? The complex intertwined roles of geologic framework, sediment availability and sea-level rise in island evolution
Laura Moore, Jeffrey H. List, S. Jeffress Williams, Kiki Patsch
Julie D. Rosati, Ping Wang, Tiffany M. Roberts, editor(s)
2011, Conference Paper, The proceedings of the Coastal Sediments 2011
Sensitivity experiments in the North Carolina Outer Banks (OBX) have previously revealed that substrate sand proportion, followed by substrate slope, sea-level rise rate and sediment-loss rate are the most important factors in...
A nearshore processes field experiment at Cape Hatteras, North Carolina, U.S.A.
Jeffrey H. List, John C. Warner, E. Robert Thieler, Kevin Haas, George Voulgaris, Jesse E. McNinch, Katherine L. Brodie
Julie D. Rosati, Ping Wang, Tiffany M. Roberts, editor(s)
2011, Conference Paper, The proceedings of the Coastal Sediments 2011
A month-long field experiment focused on the nearshore hydrodynamics of Diamond Shoals adjacent to Cape Hatteras Point, North Carolina, was conducted in February 2010. The objectives of this multi-institutional experiment were to test hypotheses related to Diamond Shoals as a sink in the regional sediment budget and to provide data...
Natural radium and radon tracers to quantify water exchange and movement in reservoirs
Christopher G. Smith
Mark Baskaran, editor(s)
2011, Book chapter, Handbook of environmental isotope geochemistry
Radon and radium isotopes are routinely used to quantify exchange rates between different hydrologic reservoirs. Since their recognition as oceanic tracers in the 1960s, both radon and radium have been used to examine processes such as air-sea exchange, deep oceanic mixing, benthic inputs, and many others. Recently, the application of...
Hydrogeology of the Hawaiian islands
Stephen B. Gingerich, Delwyn S. Oki
Maria del Carmen Cabrera, Luis Javier Lamban, Margarida Valverde, editor(s)
2011, Book chapter, Cuatro décadas de investigación y formación en aguas subterráneas: Libro homenaje al profesor Emilio Custodio
Volcanic-rock aquifers are the most extensive and productive aquifers in the Hawaiian Islands. These aquifers contain different types of groundwater systems depending on the geologic setting in which they occur. The most common groundwater systems include coastal freshwater-lens systems in the dike-free flanks of the volcanoes and dike-impounded systems within...
Upper Cretaceous bituminous coal deposits of the Olmos Formation, Maverick County, Texas
Robert W. Hook, Peter D. Warwick, John R. SanFilipo
Peter D. Warwick, Alexander K. Karlsen, Matthew D. Merrill, Brett J. Valentine, editor(s)
2011, Book chapter, Geologic assessment of coal in the Gulf of Mexico coastal plain
This report describes the bituminous coal deposits of the Olmos Formation (Navarro Group, Upper Cretaceous; Figures 1, 2) of Maverick County in south Texas. Although these were not evaluated quantitatively as part of the current Gulf Coastal Plain coal-resource assessment, a detailed review is presented in this chapter.Prior to the...
The development of a probabilistic approach to forecast coastal change
Erika E. Lentz, Cheryl J. Hapke
Julie D. Rosati, Ping Wang, Tiffany M. Roberts, editor(s)
2011, Conference Paper, The proceedings of the Coastal Sediments 2011
This study demonstrates the applicability of a Bayesian probabilistic model as an effective tool in predicting post-storm beach changes along sandy coastlines. Volume change and net shoreline movement are modeled for two study sites at Fire Island, New York in response to two extratropical storms in 2007 and 2009. Both...
Targeted surveillance for highly pathogenic avian influenza in migratory waterfowl across the conterminous United States: chapter 12
Matthew L. Farnsworth, William L. Kendall, Paul F. Doherty Jr., Ryan S. Miller, Gary C. White, James D. Nichols, Kenneth P. Burnham, Alan B. Franklin
S. Majumdar, F.J. Brenner, J.E. Huffman, R. G. McLean, A.I. Panah, P.J. Pietrobon, S.P. Keeler, S. Shive, editor(s)
2011, Book chapter, Pandemic influenza viruses: Science, surveillance and public health
Introduction of Asian strain H5N1 Highly Pathogenic avian influenca via waterfowl migration is one potential route of entry into the United States. In conjunction with state, tribe, and laboratory partners, the United States Department of Agriculture collected and tested 124,603 wild bird samples in 2006 as part of a national...
Paleocene coal deposits of the Wilcox group, central Texas
Robert W. Hook, Peter D. Warwick, John R. SanFilipo, Adam C. Schultz, Douglas J. Nichols, Sharon M. Swanson
Peter D. Warwick, Alexander K. Karlsen, Matthew D. Merrill, Brett J. Valentine, editor(s)
2011, Book chapter, Geologic assessment of coal in the Gulf of Mexico coastal plain
Coal deposits in the Wilcox Group of central Texas have been regarded as the richest coal resources in the Gulf Coastal Plain. Although minable coal beds appear to be less numerous and generally higher in sulfur content (1 percent average, as-received basis; table 1) than Wilcox coal deposits in the...
Coal resources for part of the Wilcox group (Paleocene through Eocene), central Texas
Peter D. Warwick, Claire E. Aubourg, Stephen E. Suitt, Steven M. Podwysocki, Adam C. Schultz
Peter D. Warwick, Alexander K. Karlsen, Matthew D. Merrill, Brett J. Valentine, editor(s)
2011, Book chapter, Geologic assessment of coal in the Gulf of Mexico coastal plain
The Wilcox Group of central Texas contains shallow (less than 500 ft) coal deposits that are mined for use in mine-mouth electric power generating plants. These coal deposits range in apparent rank from lignite to sub-bituminous (Pierce et al., 2011) and are similar in rank and composition to shallow coal...
