Transient electromagnetic mapping of clay units in the San Luis Valley, Colorado
David V. Fitterman, V. J. S. Grauch
2010, Conference Paper, Symposium on the Application of Geophysics to Engineering and Environmental Problems 2010
Transient electromagnetic soundings were used to obtain information needed to refine hydrologic models of the San Luis Valley, Colorado. The soundings were able to map an aquitard called the blue clay that separates an unconfined surface aquifer from a deeper confined aquifer. The blue clay forms a conductor with an average...
Geologic controls on thermal maturity patterns in Pennsylvanian coal-bearing rocks in the Appalachian basin
Leslie F. Ruppert, James C. Hower, Robert T. Ryder, Jeffrey R. Levine, Michael H. Trippi, William C. Grady
2010, International Journal of Coal Geology (81) 169-181
Thermal maturation patterns of Pennsylvanian strata in the Appalachian basin were determined by compiling and contouring published and unpublished vitrinite reflectance (VR) measurements. VR isograd values range from 0.6% in eastern Ohio and eastern Kentucky (western side of the East Kentucky coal field) to greater than 5.5% in eastern Pennsylvania (Southern Anthracite field,...
Brine delineation and monitoring with electrical resistivity tomography and electromagnetic borehole logging at the Fort Knox well field near West Point, Kentucky
Rory Henderson, Michael D. Unthank, Douglas D. Zettwoch, John W. Lane Jr.
2010, Conference Paper, Symposium on the Application of Geophysics to Engineering and Environmental Problems 2010
The potable water system at Fort Knox is threatened by brine contamination from improperly abandoned natural gas exploration wells. The Fort Knox well field is located near the town of West Point, Kentucky, in the flood plain of the Ohio River. At the site, unconsolidated sediments approximately 30 – 40...
Marine electrical resistivity imaging of submarine groundwater discharge: Sensitivity analysis and application in Waquoit Bay, Massachusetts, USA
Rory Henderson, Frederick D. Day-Lewis, Elena Abarca, Charles F. Harvey, Hanan N. Karam, Lanbo Liu, John W. Lane Jr.
2010, Hydrogeology Journal (18) 173-185
Electrical resistivity imaging has been used in coastal settings to characterize fresh submarine groundwater discharge and the position of the freshwater/salt-water interface because of the relation of bulk electrical conductivity to pore-fluid conductivity, which in turn is a function of salinity. Interpretation of tomograms for hydrologic processes is complicated by...
Book review: Hollowed ground—Copper mining and community building on Lake Superior, 1840s–1990s
Klaus J. Schulz
2010, Economic Geology (105) 1351-1354
In 1843, six years before the Forty-niners headed west for the goldfields of California, the United States’ first great mineral rush began to a land that was, as Patrick Henry told Congress, “beyond the most distant wilderness and remote as the moon.” He was referring to the Keweenaw Peninsula of...
Mineralogical and chemical characteristics of some natural jarosites
George A. Desborough, Kathleen S. Smith, Heather A. Lowers, Gregg A. Swayze, Jane M. Hammarstrom, Sharon F. Diehl, Reinhard W. Leinz, Rhonda L. Driscoll
2010, Geochimica et Cosmochimica Acta (74) 1041-1056
This paper presents a detailed study of the mineralogical, microscopic, thermal, and spectral characteristics of jarosite and natrojarosite minerals. Systematic mineralogic and chemical examination of a suite of 32 natural stoichiometric jarosite and natrojarosite samples from diverse supergene and hydrothermal environments indicates that there is only limited solid solution between...
Rift-related volcanism and karst geohydrology of the southern Ozark Dome
Richard W. Harrison, David J. Weary, Randall C. Orndorff, John E. Repetski, Herbert A. Pierce, Gary R. Lowell
Kevin R. Evans, James S. Aber, editor(s)
2010, Book chapter, From Precambrian rift volcanoes to the Mississippian Shelf margin: Geological field excursions in the Ozark Mountains
This field trip examines the geology and geohydrology of a dissected part of the Salem Plateau in the Ozark Plateaus province of south-central Missouri. Rocks exposed in this area include karstified, flat-lying, lower Paleozoic carbonate platform rocks deposited on Mesoproterozoic basement. The latter is exposed as an uplift located about...
Interpreting canopy water balance and fog screen observations: separating cloud water from wind-blown rainfall at two contrasting forest sites in Hawai'i
Thomas W. Giambelluca, J. K. DeLay, M.A. Nullet, Martha A. Scholl, Stephen B. Gingerich
L.A. Bruijnzeel, F.N. Scatena, L.S. Hamilton, editor(s)
2010, Book chapter, Tropical montane cloud forests: science for conservation and management
No abstract available....
Geologic map of Lassen Volcanic National Park and vicinity, California
Michael A. Clynne, L.J. Patrick Muffler
2010, Scientific Investigations Map 2899
The geologic map of Lassen Volcanic National Park (LVNP) and vicinity encompasses 1,905 km2 at the south end of the Cascade Range in Shasta, Lassen, Tehama, and Plumas Counties, northeastern California (fig. 1, sheet 3). The park includes 430 km2 of scenic volcanic features, glacially sculpted terrain, and the most...
Characterization of rock samples and mineralogical controls on leachates
Jane M. Hammarstrom, Charles A. Cravotta III, Daniel G. Galeone, John C. Jackson, Frank T. Dulong
Roger J. Hornberger, Keith B.C. Brady, editor(s)
2009, Report, Development and interpretation of the ADTI-WP2 Leaching Column Method (kinetic test procedure for the prediction of coal mine drainage quality). EPA Method 1627
Rocks associated with coal beds typically include shale, sandstone, and (or) limestone. In addition to common rock-forming minerals, all of these rock types may contain sulfide and sulfate minerals, various carbonate minerals, and organic material. These different minerals have inherently different solubility characteristics, as well as different acid-generating or acid-neutralizing...
Diffusion-equation representations of landform evolution in the simplest circumstances: Appendix C
Thomas C. Hanks
2009, Book, Friends of the Pleistocene 2009 Pacific Cell Field Trip: Paleoseismic, geomorphic, and geodetic studies across the Central Great Basin: Exploring active deformation along the eastern edge of the Pacific/North American plate boundary.
The diffusion equation is one of the three great partial differential equations of classical physics. It describes the flow or diffusion of heat in the presence of temperature gradients, fluid flow in porous media in the presence of pressure gradients, and the diffusion of molecules in the presence of chemical...
Preliminary results of the North American Soil Geochemical Landscapes Project, northeast United States and Maritime Provinces of Canada
Eric C. Grunsky, David B. Smith, Peter W.B. Friske, Laurel G. Woodruff
2009, Conference Paper, 24th International Applied Geochemistry Symposium
The results of a soil geochemical survey of the Canadian Maritime provinces and the northeast states of the United States are described. The data presented are for the <2-mm fraction of the surface layer (0-5 cm depth) and C horizons of the soil. Elemental determinations were made by ICP-MS following...
Introduction to paleoenvironments of Bear Lake, Utah and Idaho, and its catchment
Joseph G. Rosenbaum, Darrell S. Kaufman
2009, Special Paper of the Geological Society of America (450) v-xiii
In 1996 a group led by the late Kerry Kelts (University of Minnesota) and Robert Thompson (U.S. Geological Survey) acquired three piston cores (BL96-1, -2, and -3) from Bear Lake. The coring arose from their recognition of Bear Lake as a potential repository of long records of paleoenvironmental change. They...
Is the track of the Yellowstone hotspot driven by a deep mantle plume? - Review of volcanism, faulting, and uplift in light of new data
Kenneth L. Pierce, Lisa A. Morgan
2009, Journal of Volcanology and Geothermal Research (188) 1-25
Geophysical imaging of a tilted mantle plume extending at least 500 km beneath the Yellowstone caldera provides compelling support for a plume origin of the entire Yellowstone hotspot track back to its inception at 17 Ma with eruptions of flood basalts and rhyolite. The widespread volcanism, combined with a large volume of...
The United States national volcanic ash operations plan for aviation
Steven Albersheim, Marianne Guffanti
2009, Natural Hazards (51) 275-285
Volcanic-ash clouds are a known hazard to aviation, requiring that aircraft be warned away from ash-contaminated airspace. The exposure of aviation to potential hazards from volcanoes in the United States is significant. In support of existing interagency operations to detect and track volcanic-ash clouds, the United States has prepared a...
Eocene total petroleum system — North and East of the Eocene West Side Fold Belt Assessment Unit of the San Joaquin Basin Province
Donald L. Gautier, Allegra Hosford Scheirer
2009, Professional Paper 1713-19
The North and East of Eocene West Side Fold Belt Assessment Unit (AU) of the Eocene Total Petroleum System of the San Joaquin Basin Province comprises all hydrocarbon accumulations within the geographic and stratigraphic limits of this confirmed AU. Oil and associated gas accumulations occur in Paleocene through early middle...
Simulations of cataclysmic outburst floods from Pleistocene Glacial Lake Missoula
Roger P. Denlinger, D. R. H. O’Connell
2009, Geological Society of America Bulletin (122) 678-689
Using a flow domain that we constructed from 30 m digital-elevation model data of western United States and Canada and a two-dimensional numerical model for shallow-water flow over rugged terrain, we simulated outburst floods from Pleistocene Glacial Lake Missoula. We modeled a large, but not the largest, flood, using initial...
Geophysical setting of western Utah and eastern Nevada between latitudes 37°45′ and 40°N
Edward A. Mankinen, Edwin H. McKee
Bryce Tripp, Ken Krahulec, Lucy Jordan, editor(s)
2009, Book chapter, Geology and Geologic Resources and Issues of Western Utah, UGA-38
Gravity and aeromagnetic data refine the structural setting for the region of western Utah and eastern Nevada between Snake and Hamlin Valleys on the west and Tule Valley on the east. These data are used here as part of a regional analysis. An isostatic gravity map shows large areas underlain...
Stratigraphy and conodont biostratigraphy of the uppermost Carboniferous and Lower Permian from the North American Midcontinent
Darwin R. Boardman II, Bruce R. Wardlaw, Merlynd K. Nestell
2009, Kansas Geological Survey Bulletin (255)
Part A The uppermost Wabaunsee, Admire, Council Grove, and lower Chase Groups of Kansas, Oklahoma, and Nebraska are placed into three third-order depositional sequences: a Gzhelian late-highstand sequence set, a Council Grove transgressive and highstand sequence set, and a Chase transgressive sequence set. Sequences are defined by bounding maximum-exposure surfaces...
Structural development of high-temperature mylonites in the Archean Wyoming province, northwestern Madison Range, Montana
Karl S. Kellogg, David W. Mogk
2009, Rocky Mountain Geology (44) 85-102
The Crooked Creek mylonite, in the northwestern Madison Range, southwestern Montana, is defined by several curved lenses of high non-coaxial strain exposed over a 7-km-wide, northeast-trending strip. The country rocks, part of the Archean Wyoming province, are dominantly trondhjemitic to granitic orthogneiss with subordinate amphibolite, quartzite, aluminous gneiss, and sills...
Aeromagnetic survey of Howard Pass quadrangle and the East half of Misheguk Mountain quadrangle, Alaska—a Web site for the distribution of data
Philip J. Brown
2009, Open-File Report 2009-1256
U.S. Geological Survey Open-File-Report 2009-1256 is for the preliminary release of magnetic data (and associated contractor reports) for an airborne survey in the Brooks Range, northwest of Bettles, Alaska....
Digital seismic-reflection data from western Rhode Island Sound, 1980
K.Y. McMullen, L.J. Poppe, N.K. Soderberg
2009, Open-File Report 2009-1002
During 1980, the U.S. Geological Survey (USGS) conducted a seismic-reflection survey in western Rhode Island Sound aboard the Research Vessel Neecho. Data from this survey were recorded in analog form and archived at the USGS Woods Hole Science Center's Data Library. Due to recent interest in the geology of Rhode...
Archive of digital boomer seismic reflection data collected offshore east-central Florida during USGS cruise 00FGS01, July 14-22, 2000
Janice A. Subino, Shawn V. Dadisman, Dana S. Wiese, Karynna Calderon, Daniel C. Phelps
2009, Data Series 496
In July of 2000, the U.S. Geological Survey (USGS), in cooperation with the Florida Geological Survey (FGS), conducted a geophysical survey of the Atlantic Ocean offshore Florida's east coast from Brevard County to northern Martin County. This report serves as an archive of unprocessed digital boomer seismic reflection data, trackline...
Integrated sequence stratigraphy of the postimpact sediments from the Eyreville core holes, Chesapeake Bay impact structure inner basin
James V. Browning, Kenneth G. Miller, Peter P. McLaughlin Jr., Lucy E. Edwards, Andrew A. Kulpecz, David S. Powars, Bridget S. Wade, Mark D. Feigenson, James D. Wright
2009, Special Paper of the Geological Society of America (458) 775-810
The Eyreville core holes provide the first continuously cored record of postimpact sequences from within the deepest part of the central Chesapeake Bay impact crater. We analyzed the upper Eocene to Pliocene postimpact sediments from the Eyreville A and C core holes for lithology (semiquantitative measurements of grain size and...
Petrographic and geochemical comparisons between the lower crystalline basement-derived section and the granite megablock and amphibolite megablock of the Eyreville B core, Chesapeake Bay impact structure, USA
Gabrielle N. Townsend, Roger L. Gibson, J. Wright Horton Jr., Wolf Uwe Reimold, Ralf T. Schmitt, Katerina Bartosova
2009, Special Paper of the Geological Society of America (458) 255-275
The Eyreville B core from the Chesapeake Bay impact structure, Virginia, USA, contains a lower basement-derived section (1551.19 m to 1766.32 m deep) and two megablocks of dominantly (1) amphibolite (1376.38 m to 1389.35 m deep) and (2) granite (1095.74 m to 1371.11 m deep), which are separated by an...
