Predicting the retreat and migration of tidal forests along the northern Gulf of Mexico under sea-level rise
T.W. Doyle, K. W. Krauss, W.H. Conner, A.S. From
2010, Forest Ecology and Management (259) 770-777
Tidal freshwater forests in coastal regions of the southeastern United States are undergoing dieback and retreat from increasing tidal inundation and saltwater intrusion attributed to climate variability and sea-level rise. In many areas, tidal saltwater forests (mangroves) contrastingly are expanding landward in subtropical coastal reaches succeeding freshwater marsh and forest...
Shallow magma accumulation at Kīlauea Volcano, Hawai‘i, revealed by microgravity surveys
Daniel J. Johnson, Albert A. Eggers, Marco Bagnardi, Maurizio Battaglia, Michael P. Poland, Asta Miklius
2010, Geology (38) 1139-1142
Using microgravity data collected at Kīlauea Volcano, Hawai‘i (United States), between November 1975 and January 2008, we document significant mass increase beneath the east margin of Halema‘uma‘u Crater, within Kīlauea's summit caldera. Surprisingly, there was no sustained uplift accompanying the mass accumulation. We propose that the positive gravity residual in...
Pyrethroid insecticide concentrations and toxicity in streambed sediments and loads in surface waters of the San Joaquin Valley, California, USA
Joseph L. Domagalski, Donald P. Weston, Minghua Zhang, Michelle L. Hladik
2010, Environmental Toxicology and Chemistry (29) 813-823
Pyrethroid insecticide use in California, USA, is growing, and there is a need to understand the fate of these compounds in the environment. Concentrations and toxicity were assessed in streambed sediment of the San Joaquin Valley of California, one of the most productive agricultural regions of the United States. Concentrations...
Detecting the spatial and temporal variability of chlorophyll-a concentration and total suspended solids in Apalachicola Bay, Florida using MODIS imagery
Hongqing Wang, C.M. Hladik, W. Huang, K. Milla, L. Edmiston, M.A. Harwell, J.F. Schalles
2010, International Journal of Remote Sensing (31) 439-453
Apalachicola Bay, Florida, accounts for 90% of Florida's and 10% of the nation's eastern oyster (Crassostrea virginica) harvesting. Chlorophyll-a concentration and total suspended solids (TSS) are two important water quality variables, among other environmental factors such as salinity, for eastern oyster production in Apalachicola Bay. In this research,...
Relative vulnerability of public supply wells to VOC contamination in hydrologically distinct regional aquifers
Leon J. Kauffman, Francis H. Chapelle
2010, Ground Water Monitoring and Remediation (30) 54-63
A process-based methodology was used to compare the vulnerability of public supply wells tapping seven study areas in four hydrologically distinct regional aquifers to volatile organic compound (VOC) contamination. This method considers (1) contributing areas and travel times of groundwater flowpaths converging at individual supply wells, (2) the oxic and/or...
The Sudbury impact layer in the paleoproterozoiciron ranges of northern Michigan, USA
W.F. Cannon, K. J. Schulz, J. Wright Horton Jr., David A. King
2010, Geological Society of America Bulletin (122) 50-75
A layer of breccia that contains fragments of impact ejecta has been found at 10 sites in the Paleoproterozoic iron ranges of northern Michigan, in the Lake Superior region of the United States. Radiometric age constraints from events predating and postdating deposition of the breccia are ca. 1875 Ma and...
Headwater streams and forest management: does ecoregional context influence logging effects on benthic communities?
R. Bruce Medhurst, Mark S. Wipfli, Chris Binckley, Karl Polivka, Paul F. Hessburg, R. Brion Salter
2010, Hydrobiologia (641) 71-83
Effects of forest management on stream communities have been widely documented, but the role that climate plays in the disturbance outcomes is not understood. In order to determine whether the effect of disturbance from forest management on headwater stream communities varies by climate, we evaluated benthic macroinvertebrate communities in 24...
Mineralogical and chemical characteristics of some natural jarosites
George A. Desborough, Kathleen S. Smith, Heather 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...
Mineralogy and the release of trace elements from slag from the Hegeler Zinc smelter, Illinois (USA)
Nadine M. Piatak, Robert R. Seal II
2010, Applied Geochemistry (25) 302-320
Slag from the former Hegeler Zn-smelting facility in Illinois (USA) is mainly composed of spinifex Ca-rich plagioclase, fine-grained dendritic or coarse-grained subhedral to anhedral clinopyroxenes, euhedral to subhedral spinels, spherical blebs of Fe sulfides, silicate glass, and less commonly fayalitic olivine. Mullite and quartz were also identified in one sample...
Some notes on the geology of Cave Mountain Cave, Pendleton County, West Virginia
C.S. Swezey, F.T. Dulong
2010, The West Virginia Caver (28) 5-10
The thermal regime in the resurgent dome of Long Valley Caldera, California: Inferences from precision temperature logs in deep wells
S. Hurwitz, C. D. Farrar, C.F. Williams
2010, Journal of Volcanology and Geothermal Research (198) 233-240
Long Valley Caldera in eastern California formed 0.76Ma ago in a cataclysmic eruption that resulted in the deposition of 600km3 of Bishop Tuff. The total current heat flow from the caldera floor is estimated to be ~290MW, and a geothermal power plant in Casa Diablo on the flanks of the...
Caution on the use of liquid nitrogen traps in stable hydrogen isotope-ratio mass spectrometry
Tyler B. Coplen, Haiping Qi
2010, Analytical Chemistry (82) 7849-7851
An anomalous stable hydrogen isotopic fractionation of 4 ‰ in gaseous hydrogen has been correlated with the process of adding liquid nitrogen (LN2) to top off the dewar of a stainless-steel water trap on a gaseous hydrogen-water platinum equilibration system. Although the cause of this isotopic fractionation is unknown, its...
The New Albany shale in Illinois: Emerging play or prolific source
Joan Crockett, David E. Morse
2010, Oil & Gas Journal (108) 72-79
The New Albany shale (Upper Devonian) in the Illinois basin is the primary hydrocarbon source rock for the basins nearly 4 billion bbl of oil production to date. The gas play is well-established in Indiana and Western Kentucky. One in-situ oil producing well was reported in a multiply competed well...
Arsenic in groundwater in the North Carolina Eastern slate belt (Esb): Nash and halifax counties, north carolina
J.C. Reid, W.T. Haven, D.D. Eudy, R.M. Milosh, E.G. Stafford
2010, Southeastern Geology (47) 117-122
Naturally occurring arsenic-contaminated groundwater is present within the Eastern Slate Belt (ESB) of North Carolina. Long-term, integrated geologic and geo-chemical investigations havedetermined the presence of arsenic by analyzing precipitates from first and second order streams under base flow conditions. When groundwater discharges into streams, arsenic and other metals are precipitated...
Contribution of glacier runoff to freshwater discharge into the Gulf of Alaska
Edward G. Neal, Eran Hood, K. Smikrud
2010, Geophysical Research Letters (37)
Watersheds along the Gulf of Alaska (GOA) are undergoing climate warming, glacier volume loss, and shifts in the timing and volume of freshwater delivered to the eastern North Pacific Ocean. We estimate recent mean annual freshwater discharge to the GOA at 870 km3 yr−1. Small distributed coastal drainages contribute 78%...
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...
