Special considerations for specimen collections that may be involved in law enforcement cases
Tabitha Viner
J. Christian Franson, Milton Friend, Samantha E.J. Gibbs, Margaret A. Wild, editor(s)
2015, Techniques and Methods 15-C7
Causes of mortality in wildlife include natural conditions—such as the viral, bacterial, and fungal diseases discussed in other chapters of this manual—and human intervention. Direct human intervention in wildlife deaths may be associated with individual human actions, such as gunshot or poisonings, or with institutions, such as wind farms or...
Evaluation of selected static methods used to estimate element mobility, acid-generating and acid-neutralizing potentials associated with geologically diverse mining wastes
Philip L. Hageman, Robert R. Seal, Sharon F. Diehl, Nadine M. Piatak, Heather Lowers
2015, Applied Geochemistry (57) 125-139
A comparison study of selected static leaching and acid–base accounting (ABA) methods using a mineralogically diverse set of 12 modern-style, metal mine waste samples was undertaken to understand the relative performance of the various tests. To complement this study, in-depth mineralogical studies were conducted in order to elucidate the relationships...
Cokriging of compositional balances including a dimension reduction and retrieval of original units
V. Pawlowsky-Glahn, J. J. Egozcue, Ricardo A. Olea, E Pardo-Igúzquiza
2015, Journal of the Southern African Institute of Mining and Metallurgy (115) 59-72
Compositional data constitutes a special class of quantitative measurements involving parts of a whole. The sample space has an algebraic-geometric structure different from that of real-valued data. A subcomposition is a subset of all possible parts. When compositional data values include geographical locations, they are also regionalized variables. In the...
Bursting the bubble of melt inclusions
Jacob B. Lowenstern
2015, American Mineralogist (100) 672-673
Most silicate melt inclusions (MI) contain bubbles, whose significance has been alternately calculated, pondered, and ignored, but rarely if ever directly explored. Moore et al. (2015) analyze the bubbles, as well as their host glasses, and conclude that they often hold the preponderance of CO2 in the MI. Their findings...
Micrometer-scale U–Pb age domains in eucrite zircons, impact re-setting, and the thermal history of the HED parent body
M.D. Hopkins, S.J. Mojzsis, W.F. Bottke, Oleg Abramov
2015, Icarus (245) 367-378
Meteoritic zircons are rare, but some are documented to occur in asteroidal meteorites, including those of the howardite–eucrite–diogenite (HED) achondrite clan (Rubin, A. [1997]. Meteorit. Planet. Sci. 32, 231–247). The HEDs are widely considered to originate from the Asteroid 4 Vesta. Vesta and the other large main belt asteroids record...
Reaction modeling of drainage quality in the Duluth Complex, northern Minnesota, USA
Robert R. Seal, Kim Lapakko, Nadine M. Piatak, Laurel G. Woodruff
2015, Conference Paper
Reaction modeling can be a valuable tool in predicting the long-term behavior of waste material if representative rate constants can be derived from long-term leaching tests or other approaches. Reaction modeling using the REACT program of the Geochemist’s Workbench was conducted to evaluate long-term drainage quality affected by disseminated Cu-Ni-(Co-)-PGM...
Preface
J. Wright Horton Jr., Martin C. Chapman, Russell A. Green
2015, Geological Society of America Special Papers (509) vii-vii
This book grew out of a topical session on “Central Virginia Earthquakes of 2011: Geology, Geophysics, and Significance for Seismic Hazards in Eastern North America” at the 2012 The Geological Society of America (GSA) Annual Meeting in Charlotte, North Carolina (USA). It also benefitted from related sessions...
Aftershocks illuminate the 2011 Mineral, Virginia, earthquake causative fault zone and nearby active faults
J. Wright Horton Jr., Anjana K. Shah, Daniel E. McNamara, Stephen L. Snyder, Aina M Carter
2015, Special Paper of the Geological Society of America (509) 253-271
Deployment of temporary seismic stations after the 2011 Mineral, Virginia (USA), earthquake produced a well-recorded aftershock sequence. The majority of aftershocks are in a tabular cluster that delineates the previously unknown Quail fault zone. Quail fault zone aftershocks range from ~3 to 8 km in depth and are in a...
Eocene and Miocene extension, meteoric fluid infiltration, and core complex formation in the Great Basin (Raft River Mountains, Utah)
Katharina Methner, Andreas Mulch, Christian Teyssier, Michael L. Wells, Michael A. Cosca, Raphael Gottardi, Aude Gebelin, C. Page Chamberlain
2015, Tectonics (34) 680-693
Metamorphic core complexes (MCCs) in the North American Cordillera reflect the effects of lithospheric extension and contribute to crustal adjustments both during and after a protracted subduction history along the Pacific plate margin. While the Miocene-to-recent history of most MCCs in the Great Basin, including the Raft River-Albion-Grouse Creek MCC,...
Numerical modeling of injection, stress and permeability enhancement during shear stimulation at the Desert Peak Enhanced Geothermal System
David Dempsey, Sharad Kelkar, Nick Davatzes, Stephen H. Hickman, Daniel Moos
2015, International Journal of Rock Mechanics and Mining Sciences (78) 190-206
Creation of an Enhanced Geothermal System relies on stimulation of fracture permeability through self-propping shear failure that creates a complex fracture network with high surface area for efficient heat transfer. In 2010, shear stimulation was carried out in well 27-15 at Desert Peak geothermal field, Nevada, by injecting cold water...
Truncorotalia crassaformis from its type locality: Comparison with Caribbean plankton and Pliocene relatives
George H. Scott, James C. Ingle Jr., Brendan McCane, Charles L. Powell II, Robert C. Thunell
2015, Marine Micropaleontology (117) 1-12
Truncorotalia crassaformis has been identified in Pliocene-Holocene assemblages globally but there has been little analysis of specimens from its type locality at Lomita Quarry, California. This has led to confusion about some diagnostic criteria, particularly the presence of a peripheral keel. To better understand variation specimens are studied from the type...
Corrigendum to “Comparing activated alumina with indigenous laterite and bauxite as potential sorbents for removing fluoride from drinking water in Ghana” [Appl. Geochem. 56 (2015) 50–66]
Laura Craig, Lisa L. Stillings, David L. Decker, James M. Thomas
2015, Applied Geochemistry (63) 451-451
The authors regret that the application of the t-plot to determine the presence of micropores in the three sorbents needs the following corrections: (1) Fig. 1a, c, e are N2(g) adsorption and desorption isotherms” (remove “BET”). This correction applies to descriptions in the text as well. (2) Table 2, the column titled “Micropores”...
Beyond temperature: Clumped isotope signatures in dissolved inorganic carbon species and the influence of solution chemistry on carbonate mineral composition
Aradhna K. Tripati, Pamela S. Hill, Robert A. Eagle, Jed L. Mosenfelder, Jianwu Tang, Edwin A. Schauble, John M. Eiler, Richard E. Zeebe, Joji Uchikawa, Tyler B. Coplen, Justin B. Ries, Drew Henry
2015, Geochimica et Cosmochimica Acta (166) 344-371
“Clumped-isotope” thermometry is an emerging tool to probe the temperature history of surface and subsurface environments based on measurements of the proportion of 13C and 18O isotopes bound to each other within carbonate minerals in 13C18O16O22- groups (heavy isotope “clumps”). Although most clumped isotope geothermometry implicitly presumes carbonate crystals have attained...
Geology and neotectonism in the epicentral area of the 2011 M5.8 Mineral, Virginia, earthquake
William C. Burton, David B. Spears, Richard W. Harrison, Nicholas H. Evans, J. Stephen Schindler, Ronald C. Counts
2015, Field Guides (35) 103-127
This fi eld guide covers a two-day west-to-east transect across the epicentral region of the 2011 M5.8 Mineral, Virginia, earthquake, the largest ever recorded in the Central Virginia seismic zone. The fi eld trip highlights results of recent bedrock and surficial geologic mapping in two adjoining 7.5-min quadrangles, the Ferncliff...
Testing the use of bulk organic δ13C, δ15N, and Corg:Ntot ratios to estimate subsidence during the 1964 great Alaska earthquake
Adrian M. Bender, Robert C. Witter, Matthew Rogers
2015, Quaternary Science Reviews (113) 134-146
During the Mw 9.2 1964 great Alaska earthquake, Turnagain Arm near Girdwood, Alaska subsided 1.7 ± 0.1 m based on pre- and postearthquake leveling. The coseismic subsidence in 1964 caused equivalent sudden relative sea-level (RSL) rise that is stratigraphically preserved as mud-over-peat contacts where intertidal silt buried peaty marsh surfaces. Changes in intertidal microfossil...
Fate of nutrients in shallow groundwater receiving treated septage, Malibu, CA
John A. Izbicki
2014, Groundwater (52) 218-233
Treated wastewater discharged from more than 400 onsite wastewater treatment systems (OWTS) near the Civic Center area of Malibu, California, 40 km west of downtown Los Angeles, composes 28% of the recharge to a 3.4 km2 alluvial aquifer. On the basis of δ18O and δD data, the fraction of wastewater in...
Executive summary
Leslie F. Ruppert, Robert T. Ryder
Leslie F. Ruppert, Robert T. Ryder, editor(s)
2014, Professional Paper 1708-A.1
Fossil fuels from the Appalachian basin region have been major contributors to the Nation’s energy needs over much of the last three centuries. Early records indicate that Appalachian coal was first mined in the middle 1700s (Virginia and Pennsylvania) and was used sparingly to fuel colonial settlements and, later, a...
Airborne electromagnetic data and processing within Leach Lake Basin, Fort Irwin, California
Paul A. Bedrosian, Lyndsay B. Ball, Benjamin R. Bloss
David C. Buesch, editor(s)
2014, Open-File Report 2013-1024-G
From December 2010 to January 2011, the U.S. Geological Survey conducted airborne electromagnetic and magnetic surveys of Leach Lake Basin within the National Training Center, Fort Irwin, California. These data were collected to characterize the subsurface and provide information needed to understand and manage groundwater resources within Fort Irwin. A...
Geophysical interpretation of U, Th, and rare earth element mineralization of the Bokan Mountain peralkaline granite complex, Prince of Wales Island, southeast Alaska
Anne E. McCafferty, Douglas B. Stoeser, Bradley S. Van Gosen
2014, Interpretation (2) SJ47-SJ63
A prospectivity map for rare earth element (REE) mineralization at the Bokan Mountain peralkaline granite complex, Prince of Wales Island, southeastern Alaska, was calculated from high-resolution airborne gamma-ray data. The map displays areas with similar radioelement concentrations as those over the Dotson REE-vein-dike system, which is characterized by moderately high...
40Ar/39Ar geochronology, paleomagnetism, and evolution of the Boring volcanic field, Oregon and Washington, USA
Robert J. Fleck, Jonathan T. Hagstrum, Andrew T. Calvert, Russell C. Evarts, Richard M. Conrey
2014, Geosphere (10) 1283-1314
The 40Ar/39Ar investigations of a large suite of fine-grained basaltic rocks of the Boring volcanic field (BVF), Oregon and Washington (USA), yielded two primary results. (1) Using age control from paleomagnetic polarity, stratigraphy, and available plateau ages, 40Ar/39Ar recoil model ages are defined that provide reliable age results in the absence of...
Tectonic evolution of the Tualatin basin, northwest Oregon, as revealed by inversion of gravity data
Darcy McPhee, Victoria E. Langenheim, Ray E. Wells, Richard J. Blakely
2014, Geosphere (10) 264-275
The Tualatin basin, west of Portland (Oregon, USA), coincides with a 110 mGal gravity low along the Puget-Willamette lowland. New gravity measurements (n = 3000) reveal a three-dimensional (3-D) subsurface geometry suggesting early development as a fault-bounded pull-apart basin. A strong northwest-trending gravity gradient coincides with the Gales Creek fault,...
Multisystem dating of modern river detritus from Tajikistan and China: Implications for crustal evolution and exhumation of the Pamir
Barbara Carappa, F.S. Mustapha, Michael A. Cosca, George E. Gehrels, L Schoenbhohm, E. Sobel, DeCelles.P., Joellen Russell, Paul Goodman
2014, Lithosphere (6) 443-455
The Pamir is the western continuation of Tibet and the site of some of the highest mountains on Earth, yet comparatively little is known about its crustal and tectonic evolution and erosional history. Both Tibet and the Pamir are characterized by similar terranes and sutures that can be correlated along...
Flow and sorption controls of groundwater arsenic in individual boreholes from bedrock aquifers in central Maine, USA
Qiang Yang, Charles W. Culbertson, Martha G. Nielsen, Charles W. Schalk, Carole D. Johnson, Robert G. Marvinney, Martin Stute, Yan Zheng
2014, Science of the Total Environment (505) 1291-1307
To understand the hydrogeochemical processes regulating well water arsenic (As) evolution in fractured bedrock aquifers, three domestic wells with [As] up to 478 μg/L are investigated in central Maine. Geophysical logging reveals that fractures near the borehole bottom contribute 70-100% of flow. Borehole and fracture water samples from various depths...
Geologic map of the Ahankashan-Rakhna basin, Badghis, Ghor, and Herat Provinces, Afghanistan, modified from the 1974 original map compilation of Y.I. Shcherbina and others
Robert D. Tucker, Will R. Stettner, Linda M. Masonic, Anya K. Bogdanow
2014, Open-File Report 2014-1199
This geologic map of the Ahankashan-Rakhna basin, Afghanistan, is a redrafted and modified version of the Geological map of the area of Ahankashan-Rakhna basin, scale 1:50,000 and Geological map of the Ahankashan area with data on mineral resources, scale 1:12,000 from Shcherbina and others (1974) (Soviet report no. 0822). That unpublished Soviet report contains...
Exposure pathways and biological receptors: baseline data for the canyon uranium mine, Coconino County, Arizona
Jo Ellen Hinck, Greg L. Linder, Abigail J. Darrah, Charles A. Drost, Michael C. Duniway, Matthew J. Johnson, Francisca M. Mendez-Harclerode, Erika M. Nowak, Ernest W. Valdez, Charles van Riper III, S.W. Wolff
2014, Journal of Fish and Wildlife Management (5) 422-440
Recent restrictions on uranium mining within the Grand Canyon watershed have drawn attention to scientific data gaps in evaluating the possible effects of ore extraction to human populations as well as wildlife communities in the area. Tissue contaminant concentrations, one of the most basic data requirements to determine exposure, are...
