A conceptual model of the hydrogeologic framework, geochemistry, and groundwater-flow system of the Edwards-Trinity and related aquifers in the Pecos County region, Texas
Johnathan R. Bumgarner, Gregory P. Stanton, Andrew Teeple, Jonathan V. Thomas, Natalie A. Houston, Jason Payne, MaryLynn Musgrove
2012, Scientific Investigations Report 2012-5124
A conceptual model of the hydrogeologic framework, geochemistry, and groundwater-flow system of the Edwards-Trinity and related aquifers, which include the Pecos Valley, Igneous, Dockum, Rustler, and Capitan Reef aquifers, was developed as the second phase of a groundwater availability study in the Pecos County region in west Texas. The first...
Scaling the Teflon Peaks: Rock type and the generation of extreme relief in the glaciated western Alaska Range
Dylan J. Ward, Robert S. Anderson, Peter J. Haeussler
2012, Journal of Geophysical Research F: Earth Surface (117)
Parts of the Alaska Range (Alaska, USA) stand in prominent exception to the “glacial buzzsaw hypothesis,” which postulates that terrain raised above the ELA is rapidly denuded by glaciers. In this paper, we discuss the role of a strong contrast in rock type in the development of this exceptional terrain....
The Novarupta-Katmai eruption of 1912 - largest eruption of the twentieth century; centennial perspectives
Wes Hildreth, Judy Fierstein
2012, Professional Paper 1791
The explosive outburst at Novarupta (Alaska) in June 1912 was the 20th century's most voluminous volcanic eruption. Marking its centennial, we illustrate and document the complex eruptive sequence, which was long misattributed to nearby Mount Katmai, and how its deposits have provided key insights about volcanic and magmatic processes. It...
Surficial geologic map of the Cuddeback Lake 30' x 60' quadrangle, San Bernardino and Kern Counties, California
Lee Amoroso, David M. Miller
2012, Scientific Investigations Map 3107
The 1:100,000-scale Cuddeback Lake quadrangle is located in the western Mojave Desert north-northeast of Los Angeles, between the southern Sierra Nevada and San Bernardino Mountains, in Kern and San Bernardino Counties, California. Geomorphic features include high-relief mountains, small hills, volcanic domes, pediments, broad alluvial valleys, and dry lakes. It is...
Minor element distribution in iron disulfides in coal: a geochemical review
Allan Kolker
2012, International Journal of Coal Geology (94) 32-43
Electron beam microanalysis of coal samples in U.S. Geological Survey (USGS) labs confirms that As is the most abundant minor constituent in Fe disulfides in coal and that Se, Ni, and other minor constituents are present less commonly and at lower concentrations than those for As. In nearly all cases,...
USGS Environmental health science strategy: providing environmental health science for a changing world: Public review release
Patricia R. Bright, Herbert T. Buxton, Laurie S. Balistrieri, Larry B. Barber, Francis H. Chapelle, Paul C. Cross, David P. Krabbenhoft, Geoffrey S. Plumlee, Jonathan M. Sleeman, Donald E. Tillitt, Patricia L. Toccalino, James R. Winton
2012, Open-File Report 2012-1069
America has an abundance of natural resources. We have bountiful clean water, fertile soil, and unrivaled national parks, wildlife refuges, and public lands. These resources enrich our lives and preserve our health and wellbeing. These resources have been maintained because of our history of respect for their value and an...
The U.S. Geological Survey Ecosystem Science Strategy, 2012-2022 - Advancing discovery and application through collaboration
Byron K. Williams, G. Lynn Wingard, Gary Brewer, James E. Cloern, Guy R. Gelfenbaum, Robert B. Jacobson, Jeffrey L. Kershner, Anthony D. McGuire, James D. Nichols, Carl D. Shapiro, Charles van Riper III, Robin P. White
2012, Open-File Report 2012-1092
Ecosystem science is critical to making informed decisions about natural resources that can sustain our Nation’s economic and environmental well-being. Resource managers and policy-makers are faced with countless decisions each year at local, state, tribal, territorial, and national levels on issues as diverse as renewable and non-renewable energy development, agriculture,...
U.S. Geological Survey energy and minerals science strategy
Richard C. Ferrero, Jonathan J. Kolak, Donald J. Bills, Zachary H. Bowen, Daniel J. Cordier, Tanya J. Gallegos, James R. Hein, Karen D. Kelley, Philip H. Nelson, Vito F. Nuccio, Jeanine M. Schmidt, Robert R. Seal II
2012, Open-File Report 2012-1072
The economy, national security, and standard of living of the United States depend heavily on adequate and reliable supplies of energy and mineral resources. Based on current population and consumption trends, the Nation's use of energy and minerals can be expected to grow, driving the demand for ever broader scientific...
Persistence of soil organic matter in eroding versus depositional landform positions
Asmeret Asefaw Berhe, Jennifer W. Harden, Margaret S. Torn, Markus Kleber, Sarah D. Burton, John Harte
2012, Journal of Geophysical Research: Biogeosciences (117)
Soil organic matter (SOM) processes in dynamic landscapes are strongly influenced by soil erosion and sedimentation. We determined the contribution of physical isolation of organic matter (OM) inside aggregates, chemical interaction of OM with soil minerals, and molecular structure of SOM in controlling storage and persistence of SOM in different...
Microbial transformations of arsenic: Mobilization from glauconitic sediments to water
Adam C. Mumford, Julia L. Barringer, William Benzel, Pamela A. Reilly, L.Y. Young
2012, Water Research (46) 2859-2868
In the Inner Coastal Plain of New Jersey, arsenic (As) is released from glauconitic sediment to carbon- and nutrient-rich shallow groundwater. This As-rich groundwater discharges to a major area stream. We hypothesize that microbes play an active role in the mobilization of As from glauconitic subsurface sediments into groundwater in...
Estimated water requirements for gold heap-leach operations
Donald I. Bleiwas
2012, Open-File Report 2012-1085
This report provides a perspective on the amount of water necessary for conventional gold heap-leach operations. Water is required for drilling and dust suppression during mining, for agglomeration and as leachate during ore processing, to support the workforce (requires water in potable form and for sanitation), for minesite reclamation, and...
Migrated hydrocarbons in exposure of Maastrichtian nonmarine strata near Saddle Mountain, lower Cook Inlet, Alaska
D. L. LePain, P. G. Lillis, K. P. Helmold, R. G. Stanley
2012, Alaska Division of Geological & Geophysical Surveys Report of Investigation 2012-1
Magoon and others (1980) described an 83-meter- (272-foot-) thick succession of Maastrichtian (Upper Cretaceous) conglomerate, sandstone, mudstone, and coal exposed on the south side of an unnamed drainage, approximately 3 kilometers (1.8 miles) east of Saddle Mountain in lower Cook Inlet (figs. 1 and 2). The initial significance of this...
Lineament analysis of mineral areas of interest in Afghanistan
Bernard E. Hubbard, Thomas J. Mack, Allyson L. Thompson
2012, Open-File Report 2012-1048
During a preliminary mineral resource assessment of Afghanistan (Peters and others, 2007), 24 mineralized areas of interest (AOIs) were highlighted as the focus for future economic development throughout various parts of the country. In addition to located mineral resources of value, development of a viable mining industry in Afghanistan will...
Preliminary assessment of channel stability and bed-material transport in the Coquille River basin, southwestern Oregon
Krista L. Jones, Jim E. O'Connor, Mackenzie K. Keith, Joseph F. Mangano, J. Rose Wallick
2012, Open-File Report 2012-1064
This report summarizes a preliminary study of bed-material transport, vertical and lateral channel changes, and existing datasets for the Coquille River basin, which encompasses 2,745 km2 (square kilometers) of the southwestern Oregon coast. This study, conducted to inform permitting decisions regarding instream gravel mining, revealed that:The 115.4-km-long study area on...
Geologic framework, regional aquifer properties (1940s-2009), and spring, creek, and seep properties (2009-10) of the upper San Mateo Creek Basin near Mount Taylor, New Mexico
Jeff B. Langman, Jesse E. Sprague, Roger A. Durall
2012, Scientific Investigations Report 2012-5019
The U.S. Geological Survey, in cooperation with the U.S. Forest Service, examined the geologic framework, regional aquifer properties, and spring, creek, and seep properties of the upper San Mateo Creek Basin near Mount Taylor, which contains areas proposed for exploratory drilling and possible uranium mining on U.S. Forest Service land....
Volcanogenic massive sulfide occurrence model
W.C. Pat Shanks III, Randolph A. Koski, Dan L. Mosier, Klaus J. Schulz, Lisa A. Morgan, John F. Slack, W. Ian Ridley, Cynthia Dusel-Bacon, Robert R. Seal II, Nadine M. Piatak
W.C. Pat Shanks III, Roland Thurston, editor(s)
2012, Scientific Investigations Report 2010-5070-C
Volcanogenic massive sulfide deposits, also known as volcanic-hosted massive sulfide, volcanic-associated massive sulfide, or seafloor massive sulfide deposits, are important sources of copper, zinc, lead, gold, and silver (Cu, Zn, Pb, Au, and Ag). These deposits form at or near the seafloor where circulating hydrothermal fluids driven by magmatic heat...
Evaluation of long-term water-level declines in basalt aquifers near Mosier, Oregon
Erick R. Burns, David S. Morgan, Karl K. Lee, Jonathan V. Haynes, Terrence D. Conlon
2012, Scientific Investigations Report 2012-5002
The Mosier area lies along the Columbia River in northwestern Wasco County between the cities of Hood River and The Dalles, Oregon. Major water uses in the area are irrigation, municipal supply for the city of Mosier, and domestic supply for rural residents. The primary source of water is groundwater...
Preliminary assessment of channel stability and bed-material transport in the Rogue River basin, southwestern Oregon
Krista L. Jones, Jim E. O'Connor, Mackenzie K. Keith, Joseph F. Mangano, J. Rose Wallick
2012, Open-File Report 2011-1280
This report summarizes a preliminary assessment of bed-material transport, vertical and lateral channel changes, and existing datasets for the Rogue River basin, which encompasses 13,390 square kilometers (km2) along the southwestern Oregon coast. This study, conducted to inform permitting decisions regarding instream gravel mining, revealed that:The Rogue River in its...
Mineral Commodity Summaries 2012
2012, Mineral Commodity Summaries 2012
Each chapter of the 2012 edition of the U.S. Geological Survey (USGS) Mineral Commodity Summaries (MCS) includes information on events, trends, and issues for each mineral commodity as well as discussions and tabular presentations on domestic industry structure, Government programs, tariffs, 5-year salient statistics, and world production and resources. The...
Peninsular terrane basement ages recorded by Paleozoic and Paleoproterozoic zircon in gabbro xenoliths and andesite from Redoubt volcano, Alaska
Charles R. Bacon, Jorge A. Vazquez, Joseph L. Wooden
2012, Geological Society of America Bulletin (124) 24-34
Historically Sactive Redoubt volcano is an Aleutian arc basalt-to-dacite cone constructed upon the Jurassic–Early Tertiary Alaska–Aleutian Range batholith. The batholith intrudes the Peninsular tectonostratigraphic terrane, which is considered to have developed on oceanic basement and to have accreted to North America, possibly in Late Jurassic time. Xenoliths in Redoubt magmas...
Using hydrogeology to identify the source of groundwater to Montezuma Well, a natural spring in central Arizona: part 1
Raymond H. Johnson, Ed H. DeWitt, L. Rick Arnold
2012, Environmental Earth Sciences (67) 1821-1835
Montezuma Well is a natural spring located within a “sinkhole” in the desert environment of the Verde Valley in Central Arizona. It is managed by the National Park Service as part of Montezuma Castle National Monument. Because of increasing development of groundwater in the area, this research was undertaken to...
Ore genesis constraints on the Idaho Cobalt Belt from fluid inclusion gas, noble gas isotope, and ion ratio analyses
Albert H. Hofstra, Gary P. Landis
2012, Economic Geology (107) 1189-1205
The Idaho cobalt belt is a 60-km-long alignment of deposits composed of cobaltite, Co pyrite, chalcopyrite, and gold with anomalous Nb, Y, Be, and rare-earth elements (REEs) in a quartz-biotite-tourmaline gangue hosted in Mesoproterozoic metasedimentary rocks of the Lemhi Group. It is the largest cobalt resource in the United States...
Geostatistical modeling of the gas emission zone and its in-place gas content for Pittsburgh-seam mines using sequential Gaussian simulation
Cevat O. Karacan, Ricardo A. Olea, G. Goodman
2012, International Journal of Coal Geology (90-91) 50-71
Determination of the size of the gas emission zone, the locations of gas sources within, and especially the amount of gas retained in those zones is one of the most important steps for designing a successful methane control strategy and an efficient ventilation system in...
Microbial reduction of structural iron in interstratified illite-smectite minerals by a sulfate-reducing bacterium
D. Liu, H. Dong, M.E. Bishop, Jiahua Zhang, Hongfang Wang, S. Xie, Shaoming Wang, L. Huang, D. D. Eberl
2012, Geobiology (10) 150-162
Clay minerals are ubiquitous in soils, sediments, and sedimentary rocks and could coexist with sulfate‐reducing bacteria (SRB) in anoxic environments, however, the interactions of clay minerals and SRB are not well understood. The objective of this study was to understand the reduction rate and capacity of structural Fe(III) in dioctahedral...
Progress report geologic map of the Grouse Creek 30' x 60' quadrangle, and Utah part of the Jackpot 30' x 60' quadrangle, Box Elder County, Utah, and Cassia County, Idaho (Year 3 of 4);
David M. Miller, Donald L. Clark, Michael L. Wells, Charles G. Oviatt, Tracey J. Felger, Victoria R. Todd
2012, Utah Geological Survey Open-File Report 598
No abstract available....
