Minerales en nuestro ambiente
Dave G. Frank, John P. Galloway, Susan Garcia, Judy Weathers
2007, Open-File Report 2007-1185
No abstract available....
Audiomagnetotelluric Data and Two-Dimensional Models from Spring, Snake, and Three Lakes Valleys, Nevada
Darcy McPhee, Bruce A. Chuchel, Louise Pellerin
2007, Open-File Report 2007-1181
Audiomagnetotelluric (AMT) data along thirteen profiles in Spring, Snake, and Three Lakes Valleys, and the corresponding two-dimensional (2-D) inverse models, are presented. The AMT method is a valuable tool for estimating the electrical resistivity of the Earth over depth ranges of a few meters to roughly one kilometer. It is...
Reported Historic Asbestos Mines, Historic Asbestos Prospects, and Natural Asbestos Occurrences in the Rocky Mountain States of the United States (Colorado, Idaho, Montana, New Mexico, and Wyoming)
Bradley S. Van Gosen
2007, Open-File Report 2007-1182
This map and its accompanying dataset provide information for 48 natural asbestos occurrences in the Rocky Mountain States of the United States (U.S.), using descriptions found in the geologic literature. Data on location, mineralogy, geology, and relevant literature for each asbestos site are provided. Using the map and digital data...
Digital outlines and topography of the glaciers of the American West
Andrew G. Fountain, Matthew Hoffman, Keith Jackson, Hassan Basagic, Thomas Nylen, David Percy
2007, Open-File Report 2006-1340
Alpine glaciers have generally receded during the past century (post-“Little Ice Age”) because of climate warming (Oerlemans and others, 1998; Mann and others, 1999; Dyurgerov and Meier, 2000; Grove, 2001). This general retreat has accelerated since the mid 1970s, when a shift in atmospheric circulation occurred (McCabe and Fountain, 1995;...
Near-field receiving water monitoring of trace metals and a benthic community near the Palo Alto Regional Water Quality Control Plant in South San Francisco Bay, California--2006
Allison H. Lorenzi, Daniel J. Cain, Francis Parcheso, Janet K. Thompson, Samuel N. Luoma, Michelle I. Hornberger, Jessica Dyke, Raul Cervantes, Michelle K. Shouse
2007, Open-File Report 2007-1199
Results reported herein include trace element concentrations in sediment and in the clam Macoma petalum (formerly reported as Macoma balthica (Cohen and Carlton 1995)), clam reproductive activity, and benthic macroinvertebrate community structure for a mudflat one kilometer south of the discharge of the Palo Alto Regional Water Quality Control Plant...
Hydrologic, Water-Quality, and Meteorological Data for the Cambridge, Massachusetts, Drinking-Water Source Area, Water Year 2005
Kirk P. Smith
2007, Open-File Report 2007-1049
Records of water quantity, water quality, and meteorological parameters were continuously collected from three reservoirs, two primary streams, and four subbasin tributaries in the Cambridge, Massachusetts, drinking-water source area during water year 2005 (October 2004 through September 2005). Water samples were collected during base-flow conditions and storms in the subbasins...
Comparisons of Water Quality and Biological Variables from Colorado River Shoreline Habitats in Grand Canyon, Arizona, under Steady and Fluctuating Discharges from Glen Canyon Dam
Barbara E. Ralston, Matthew V. Lauretta, Theodore A. Kennedy
2007, Open-File Report 2007-1195
Glen Canyon Dam operations are known to affect mainstem Colorado River temperature and shoreline habitats for native fish. Options for ameliorating the impacts that operations have on young native fish include changing release volumes and/or changing the daily range of releases. Long-term alterations of operations that may produce a measurable...
Water-Quality and Lake-Stage Data for Wisconsin Lakes, Water Year 2006
W. J. Rose, H.S. Garn, G. L. Goddard, S.B. Marsh, D.L. Olson, Dale M. Robertson
2007, Open-File Report 2007-1173
The U.S. Geological Survey (USGS), in cooperation with local and other agencies, collects data at selected lakes throughout Wisconsin. These data, accumulated over many years, provide a data base for developing an improved understanding of the water quality of lakes. To make these data available to interested parties outside the...
Geophysical Data from Spring Valley to Delamar Valley, East-Central Nevada
Edward A. Mankinen, Carter W. Roberts, Edwin H. McKee, Bruce A. Chuchel, Robert L. Morin
2007, Open-File Report 2007-1190
Cenozoic basins in eastern Nevada and western Utah constitute major ground-water recharge areas in the eastern part of the Great Basin and these were investigated to characterize the geologic framework of the region. Prior to these investigations, regional gravity coverage was variable over the region, adequate in some areas and...
Cooperative water-resources monitoring in the St. Clair River/Lake St. Clair Basin, Michigan
Stephen J. Rheaume, Brian P. Neff, Stephen P. Blumer
2007, Open-File Report 2007-1148
As part of the Lake St. Clair Regional Monitoring Project, this report describes numerous cooperative water-resources monitoring efforts conducted in the St. Clair River/Lake St. Clair Basin over the last 100 years. Cooperative monitoring is a tool used to observe and record changes in water quantity and quality over time....
Occurrences of calcareous nannofossil, dinoflagellate cyst, and pollen taxa in Paleocene strate in South Carolina
Norman O. Frederiksen, Lucy E. Edwards, Laurel M. Bybell, Jean M. Self-Trail
2007, Open-File Report 2006-1353
This report presents 26 diagrams showing the occurrences of fossil dinocyst, calcareous nannofossil, and pollen assemblages in Paleocene samples from 15 boreholes in South Carolina....
Flood of May 2006 in New Hampshire
Scott A. Olson
2007, Open-File Report 2007-1122
From May 13-17, 2006, central and southern New Hampshire experienced severe flooding caused by as much as 14 inches of rainfall in the region. As a result of the flood damage, a presidential disaster declaration was made on May 25, 2006, for seven counties-Rockingham, Hillsborough, Strafford, Merrimack, Belknap, Carroll, and...
Effects of Mining on the Environment - A National Overview
S. E. Church, T.S. Schmidt, C. A. San Juan, G.S. Plumlee
2007, Open-File Report 2007-1165
Distribution of potential spawning habitat for sturgeon in the Lower Missouri River, 2003-06
Mark S. Laustrup, Robert B. Jacobson, Darin G. Simpkins
2007, Open-File Report 2007-1192
We surveyed the Lower Missouri River downstream from Gavins Point Dam near Yankton, South Dakota, to St. Louis, Missouri, during low water conditions in 2003-06 to identify and map coarse substrate deposits and bedrock exposures that might serve as spawning areas for sturgeon and other fishes. More than 330 deposits...
Preliminary Geologic Map of the Sanchez Reservoir Quadrangle and Eastern Part of the Garcia Quadrangle, Costilla County, Colorado
Ren A. Thompson, Michael N. Machette, Benjamin J. Drenth
2007, Open-File Report 2007-1074
This geologic map is based entirely on new mapping by Thompson and Machette, whereas the geophysical data and interpretations were supplied by Drenth. The map area includes most of San Pedro Mesa, a basalt covered mesa that is uplifted as a horst between the Southern Sangre de Cristo fault...
Selected Hydrogeologic Data for the High Plains Aquifer in Southwestern Laramie County, Wyoming, 1931-2006
Laura L. Hallberg, Jon P. Mason
2007, Open-File Report 2007-1069
The U.S. Geological Survey, in cooperation with the Wyoming State Engineer's Office, created a hydrogeologic database for southwestern Laramie County, Wyoming. The database contains records from 166 wells and test holes drilled during 1931-2006. Several types of information, including well construction; well or test hole locations; lithologic logs; gamma, neutron,...
Mars Global Digital Dune Database: MC2-MC29
Rosalyn K. Hayward, Kevin F. Mullins, L.K. Fenton, T.M. Hare, T.N. Titus, M.C. Bourke, Anthony Colaprete, P. R. Christensen
2007, Open-File Report 2007-1158
Introduction The Mars Global Digital Dune Database presents data and describes the methodology used in creating the database. The database provides a comprehensive and quantitative view of the geographic distribution of moderate- to large-size dune fields from 65? N to 65? S latitude and encompasses ~ 550 dune fields. The database...
Chromium - A National Mineral Commodity Perspective
John F. Papp
2007, Open-File Report 2007-1167
Summary This report contains the 23 Power Point slides from a presentation made by the author at the meeting of the Washington, DC Section of the Society for Mining, Metallurgy, and Exploration, Inc. held in Washington, DC, on January 9, 2007....
Presumptive Sources of Fecal Contamination in Four Tributaries to the New River Gorge National River, West Virginia, 2004
Melvin V. Mathes, Tara L. O’Brien, Kriston M. Strickler, Joshua J. Hardy, William B. Schill, Jerzy Lukasik, Troy M. Scott, David E. Bailey, Terry L. Fenger
2007, Open-File Report 2007-1107
Several methods were used to determine the sources of fecal contamination in water samples collected during September and October 2004 from four tributaries to the New River Gorge National River -- Arbuckle Creek, Dunloup Creek, Keeney Creek, and Wolf Creek. All four tributaries historically have had elevated levels of fecal...
Miscellaneous High-Resolution Seismic Imaging Investigations in Salt Lake and Utah Valleys for Earthquake Hazards
W. J. Stephenson, R. A. Williams, J. K. Odum, D. M. Worley
2007, Open-File Report 2007-1152
Introduction In support of earthquake hazards and ground motion studies by researchers at the Utah Geological Survey, University of Utah, Utah State University, Brigham Young University, and San Diego State University, the U.S. Geological Survey Geologic Hazards Team Intermountain West Project conducted three high-resolution seismic imaging investigations along the Wasatch Front...
Earthquake Rate Model 2.2 of the 2007 Working Group for California Earthquake Probabilities, Appendix D: Magnitude-Area Relationships
Ross S. Stein
2007, Open-File Report 2007-1162
Summary To estimate the down-dip coseismic fault dimension, W, the Executive Committee has chosen the Nazareth and Hauksson (2004) method, which uses the 99% depth of background seismicity to assign W. For the predicted earthquake magnitude-fault area scaling used to estimate the maximum magnitude of an earthquake rupture from a fault's...
Geophysical Logs of Selected Test Wells at the Diaz Chemical Superfund Site in Holley, New York
David A.V. Eckhardt, J. Alton Anderson
2007, Open-File Report 2007-1081
In June and July 2006, geophysical logs were collected and analyzed along with rock-core samples to define the bedrock stratigraphy and flow zones penetrated by four test wells at the Diaz Chemical Superfund site at Holley in eastern Orleans County, New York. The work was completed as a preliminary part...
Historical changes in the Mississippi-Alabama barrier islands and the roles of extreme storms, sea level, and human activities
Robert A. Morton
2007, Open-File Report 2007-1161
An historical analysis of images and documents shows that the Mississippi-Alabama (MS-AL) barrier islands are undergoing rapid land loss and translocation. The barrier island chain formed and grew at a time when there was a surplus of sand in the alongshore sediment transport system, a condition that no longer prevails....
Project overview: Chapter A in Factors affecting the reproduction, recruitment, habitat, and population dynamics of pallid sturgeon and shovelnose sturgeon in the Missouri River
Aaron J. DeLonay, Diana M. Papoulias, Robert B. Jacobson, Mark L. Wildhaber, Darin G. Simpkins, Carl E. Korschgen
2007, Open-File Report 2007-1262-A
For more than a hundred years, human activities have modified the natural forces that control the Missouri River and its native fish fauna. While the ecological effects of regulation and channel engineering are understood in general, the current understanding is not sufficient to guide river restoration and management. The U.S....
The roles of physical habitat in reproduction and survival of pallid sturgeon and shovelnose sturgeon in the Lower Missouri River, progress 2005–06: Chapter D in Factors affecting the reproduction, recruitment, habitat, and population dynamics of pallid sturgeon and shovelnose sturgeon in the Missouri River
Robert B. Jacobson, Harold E. Johnson, Joanna M. Reuter, Caroline M. Elliott
2007, Open-File Report 2007-1262-D
This report documents progress on three related components of habitat assessments in the Lower Missouri River during 2005–06. The habitat-use component links this research directly to sturgeon ecology research described in other chapters. The habitat availability and habitat dynamics assessments provide physical context for the ecological research. Results from 2005...
