Executive summary - Geologic assessment of coal in the Gulf of Mexico coastal plain, U.S.A.
Peter D. Warwick
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 National Coal Resource Assessment (NCRA) project of the U.S. Geological Survey (USGS) has assessed the quantity and quality of the nation's coal deposits that potentially could be mined during the next few decades. For eight years, geologic, geochemical, and resource information was collected and compiled for the five major...
Midcontinent microcosm: Geology of the Atkins lake - Marengo falls area (Field trip 2)
Marcia Bjornerud, William F. Cannon
2011, Conference Paper, Institute on Lake Superior Geology, Proceedings Volume 57, Part 2: Field Trip Guidebook
Archean and Proterozoic rocks exposed over about 16km2 between Atkins Lake and Coffee Lake in southeastern Bayfield County (Fig. 1) chronicle almost all of the major Precambrian geologic events in the history of the southern Superior Craton. The oldest rocks are part of a locally gneissic quartz monzonite complex, the...
Episodic growth of a Late Cretaceous and Paleogene intrusive complex of pegmatitic leucogranite, Ruby Mountains core complex, Nevada, USA
Keith A. Howard, J. L. Wooden, C. G. Barnes, W. R. Premo, A.W. Snoke, S.-Y. Lee
2011, Geosphere (7) 1220-1248
Gneissic pegmatitic leucogranite forms a dominant component (>600 km3) of the midcrustal infrastructure of the Ruby Mountains–East Humboldt Range core complex (Nevada, USA), and was assembled and modified episodically into a batholithic volume by myriad small intrusions from ca. 92 to 29 Ma. This injection complex consists of deformed sheets...
Fire in the Cape Region of South Africa
Jon E. Keeley, William J. Bond, Ross A. Bradstock, Juli G. Pausas, Philip W. Rundel
2011, Book chapter, Fire in Mediterranean ecosystems: Ecology, evolution and management
South Africa's mediterranean-type climate (MTC) region is the smallest of the five MTC regions, centered in the southwestern corner of the Western Cape Province (Fig. 7.1). This Cape region is dominated by fynbos shrublands (see Fig. 1.6e) but this fynbos biome continues eastward far outside the MTC. The Cape region...
Mapping three-dimensional surface deformation by combining multiple-aperture interferometry and conventional interferometry: Application to the June 2007 eruption of Kilauea Volcano, Hawaii
H.-S. Jung, Z. Lu, J.-S. Won, Michael P. Poland, Asta Mikijus
2011, IEEE Geoscience and Remote Sensing Letters (8) 34-38
Surface deformation caused by an intrusion and small eruption during June 17-19, 2007, along the East Rift Zone of Kilauea Volcano, Hawaii, was three-dimensionally reconstructed from radar interferograms acquired by the Advanced Land Observing Satellite (ALOS) phased-array type L-band synthetic aperture radar (SAR) (PALSAR) instrument. To retrieve the 3-D surface...
Fire in California
Jon E. Keeley, William J. Bond, Ross A. Bradstock, Juli G. Pausas, Philip W. Rundel
2011, Book chapter, Fire in Mediterranean ecosystems: Ecology, evolution and management
On the west coast of North America lies the state of California, USA (Fig. 5.1), the bulk of which is dominated by a mediterranean-type climate (MTC). Elevations range from sea level to over 4000 m. Mountain ranges are largely oriented north to south with a major valley between the coastal...
Front matter: Preface, acknowledgements, table of contents
Peter D. Warwick, Alexander K. Karlsen, Matthew D. Merrill, Brett J. Valentine, editor(s)
2011, AAPG Studies in Geology 62
This volume is the fifth in a series of reports by the U.S. Geological Survey (USGS) on the assessment of the quantity and quality of the nation’s coal deposits that potentially could be mined during the next few decades. For eight years (1995-2003), geologic, geochemical, and resource information was collected and compiled...
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...
Using Cl/Br ratios and other indicators to assess potential impacts on groundwater quality from septic systems: A review and examples from principal aquifers in the United States
B. G. Katz, S. M. Eberts, L. J. Kauffman
2011, Journal of Hydrology (397) 151-166
A detailed review was made of chemical indicators used to identify impacts from septic tanks on groundwater quality. Potential impacts from septic tank leachate on groundwater quality were assessed using the mass ratio of chloride–bromide (Cl/Br), concentrations of selected chemical constituents, and ancillary information (land use, census data, well...
Flooding and Flood Management
K.N. Brooks, J. D. Fallon, D. L. Lorenz, J. R. Stark, Jason Menard
K.W. Easter, Jim Perry, editor(s)
2011, Book chapter, Water policy in Minnesota--Issues, incentives, and action
Floods result in great human disasters globally and nationally, causing an average of $4 billion of damages each year in the United States. Minnesota has its share of floods and flood damages, and the state has awarded nearly $278 million to local units of government for flood mitigation projects through...
Highly variable acquisition rates of Ixodes scapularis (Acari: Ixodidae) by birds on an Atlantic barrier island
S. S. Mitra, P. A. Buckley, F. G. Buckley, H. S. Ginsberg
2010, Journal of Medical Entomology (47) 1019-1027
Acquisition of ticks by bird hosts is a central process in the transmission cycles of many tick-borne zoonoses, but tick recruitment by birds has received little direct study. We documented acquisition of Ixodes scapularis Say on birds at Fire Island, NY, by removing ticks from mist-netted birds, and recording the number of...
Fluid flow, solution collapse, and massive dissolution at detachment faults, Mormon Mountains, Nevada
Sharon F. Diehl, R. Ernest Anderson, J. D. Humphrey
Paul J. Umhoefer, L. Sue Beard, Melissa Lamb, editor(s)
2010, Book chapter, Miocene tectonics of the Lake Mead Region, central basin and range
Dissolution has removed large volumes of rock at low-angle normal faults, i.e., detachment faults, in the Mormon Mountains and the Tule Springs Hills in the eastern Basin and Range Province, southeastern Nevada....
Landscape indicators and land cover change in the Mid-Atlantic Region of the United States, 1973-2001
E. Terrence Slonecker, Lesley Milheim, Peter R. Claggett
2010, GIScience and Remote Sensing (47) 163-186
Landscape indicators, derived from land use and land cover data as well as other data, were used to calculate the ecological consequences of land cover change in terms of nitrate loading and physical bird habitat. Both were modeled from 1973, 1992, and 2001 land cover data...
A model for Iapetan rifting of Laurentia based on Neoproterozoic dikes and related rocks
William C. Burton, Scott Southworth
2010, GSA Memoirs (206) 455-476
Geologic evidence of the Neoproterozoic rifting of Laurentia during breakup of Rodinia is recorded in basement massifs of the cratonic margin by dike swarms, volcanic and plutonic rocks, and rift-related clastic sedimentary sequences. The spatial and temporal distribution of these geologic features varies both within and between the massifs but...
Viscoelastic-cycle model of interseismic deformation in the northwestern United States
F. F. Pollitz, Patricia McCrory, Doug Wilson, Jerry Svarc, Christine Puskas, Robert B. Smith
2010, Geophysical Journal International (181) 665-696
We apply a viscoelastic cycle model to a compilation of GPS velocity fields in order to address the kinematics of deformation in the northwestern United States. A viscoelastic cycle model accounts for time-dependent deformation following large crustal earthquakes and is an alternative to block models for explaining the interseismic crustal...
Petrography, mineralogy, and geochemistry of deep gravelly sands in the Eyreville B core, Chesapeake Bay impact structure
Katerina Bartosova, Susanne Gier, J. Wright Horton Jr., Christian Koeberl, Dieter Mader, Henning Dypvik
2010, Meteoritics and Planetary Science (45) 1021-1052
The ICDP–USGS Eyreville drill cores in the Chesapeake Bay impact structure reached a total depth of 1766 m and comprise (from the bottom upwards) basement-derived schists and granites/pegmatites, impact breccias, mostly poorly lithified gravelly sand and crystalline blocks, a granitic slab, sedimentary breccias, and postimpact sediments. The gravelly sand and...
Conodont biostratigraphy of a more complete Reef Trail Member section near the type section, latest Guadalupian Series type region
Bruce R. Wardlaw, L.L. Lambert, G.L. Bell Jr., J.A. Fronimos, M.O. Yisa
2010, Micropaleontology (56) 233-253
The original type section of the Reef Trail Member (uppermost part of the Bell Canyon Formation) is called the Park Boundary Section, and is less than satisfactory in several aspects. We propose a new reference section designated Reef Trail Reference section 1 (RTR1) on the same hill as the original...
A short-term look at potential changes in Lake Michigan slimy sculpin diets
John R. P. French III, Richard G. Stickel, Beth A. Stockdale, M. Glen Black
2010, Journal of Great Lakes Research (36) 376-379
Diporeia hoyi and Mysis relicta are the most important prey items of slimy sculpins (Cottus cognatus) in the Great Lakes. Slimy sculpins were collected from dreissenid-infested bottoms off seven Lake Michigan ports at depths of 27–73 m in fall 2003 to study their lake-wide diets. Relatively large dreissenid biomass occurred...
Aviation response to a widely dispersed volcanic ash and gas cloud from the August 2008 eruption of Kasatochi, Alaska, USA
Marianne Guffanti, David J. Schneider, Kristi L. Wallace, Tony Hall, Dov R. Bensimon, Leonard J. Salinas
2010, Journal of Geophysical Research D: Atmospheres (115)
The extensive volcanic cloud from Kasatochi's 2008 eruption caused widespread disruptions to aviation operations along Pacific oceanic, Canadian, and U.S. air routes. Based on aviation hazard warnings issued by the National Oceanic and Atmospheric Administration, U.S. Geological Survey, the Federal Aviation Administration, and Meteorological Service of Canada, air carriers largely...
Current challenges using models to forecast seawater intrusion: lessons from the Eastern Shore of Virginia, USA
Ward E. Sanford, Jason P. Pope
2010, Hydrogeology Journal (18) 73-93
A three-dimensional model of the aquifer system of the Eastern Shore of Virginia, USA was calibrated to reproduce historical water levels and forecast the potential for saltwater intrusion. Future scenarios were simulated with two pumping schemes to predict potential areas of saltwater intrusion. Simulations suggest that only a few wells...
Groundwater hydrology--coastal flow
Ward E. Sanford
2010, Nature Geoscience (3) 671-672
How groundwater flow varies when long-term external conditions change is little documented. Geochemical evidence shows that sea-level rise at the end of the last glacial period led to a shift in the flow patterns of coastal groundwater beneath Florida....
Geologic characteristics and movement of the Meadow Creek landslide, part of the Coal Hill landslide complex, western Kane County, Utah
Francis X. Ashland, Greg N. McDonald
Stephanie M. Carney, David E. Tabet, Cari L. Johnson, editor(s)
2010, Utah Geological Association Publication 39: Geology of South-Central Utah 38-60
The Meadow Creek landslide, part of the Coal Hill landslide complex in western Kane County, Utah, is about 1.7 miles (2.7 km) wide and 1.3 miles (2.1 km) long and contains six smaller historical slides. The upper part of the Meadow Creek landslide is gently sloping and consists of...
Tectonics of the Maryland Piedmont along the Potomac River; insight since 1960 and potential transfer to the Pennsylvania Piedmont
C. Scott Southworth
Donald U. Wise, Gary M. Fleeger, editor(s)
2010, Conference Paper, Tectonics of the Susquehanna Piedmont in Lancaster, Dauphin, and York Counties, Pa.: proceedings of a symposium associated with the 75th Field Conference of Pennsylvania Geologists, Lancaster, Pa., September 23, 2010
This is a summary of a half century of research in the Mary land Piedmont and how it may or may not have implications for the Piedmont of Pennsylvania. Much of the field mapping and all of the isotopic analyses of rocks and minerals of the Maryland Piedmont have been...
Genetic structure and diversity among brook trout from Isle Royale, Lake Nipigon, and three Minnesota tributaries of Lake Superior
Wendylee Stott, Henry R. Quinlan, Owen T. Gorman, Tim L. King
2010, North American Journal of Fisheries Management (30) 400-411
Brook trout Salvelinus fontinalis from Isle Royale, Michigan, three Minnesota tributaries of Lake Superior, and Lake Nipigon in Ontario were analyzed for genetic variation at 12 microsatellite DNA loci. Analysis of molecular variance, genetic distance measures, and cluster analysis were used to examine the diversity, gene flow, and relatedness among...
Diet shift of double-crested cormorants in eastern Lake Ontario associated with the expansion of the invasive round goby
James H. Johnson, Robert M. Ross, Russell D. McCullough, Alastair Mathers
2010, Journal of Great Lakes Research (36) 242-247
The proliferation of the invasive round goby (Apollonia melanostoma) in the Great Lakes has caused shifts in the trophic ecology in some areas. We examined the diet of double-crested cormorants (Phalacrocorax auritas) prior to, and immediately after, round goby population expansion at two colonies, Pigeon and Snake Islands, in eastern...
