Bathymetric, geophysical and geologic sample data from Medicine Lake, Siskiyou County, northern California
Jonathan R. Childs, J. B. Lowenstern, R. L. Phillips, P. E. Hart, J. J. Rytuba, J. A. Barron, S. W. Starratt, Sarah Spaulding
2000, Open-File Report 00-043
In September, 1999, the U.S. Geological Survey acquired high-resolution bathymetry, seismic reflection profiles, and geologic sample data from Medicine Lake, a high altitude (2,036 m) lake located within the summit caldera/basin at Medicine Lake volcano (MLV), a dormant Quaternary shield volcano located in the Cascade Range, 50 km northeast of...
Archive of sidescan-sonar data collected off the North Carolina coast during USGS cruise ATSV99045, 7-27 October, 1999
G.F. Williams, E.R. Thieler, V.A. Cross, D.S. Foster, B.J. Irwin, D.R. Nichols, T.F. O’Brien, Christopher Polloni
2000, Open-File Report 2000-177
No abstract available....
Geologic map of the Alligator Ridge area, including the Buck Mountain East and Mooney Basin Summit quadrangles and parts of the Sunshine Well NE and Long Valley Slough quadrangles, White Pine County, Nevada
Constance J. Nutt
2000, IMAP 2691
Data set describes the geology of Paleozoic through Quaternary units in the Alligator Ridge area, which hosts disseminated gold deposits. These digital files were used to create the 1:24,000-scale geologic map of the Buck Mountain East and Mooney Basin Summit Quadrangles and parts of the Sunshine Well NE and Long...
Comparison of water-quality samples collected by siphon samplers and automatic samplers in Wisconsin
David J. Graczyk, Dale M. Robertson, William J. Rose, Jeffrey J. Steur
2000, Fact Sheet 067-00
In small streams, flow and water-quality concentrations often change quickly in response to meteorological events. Hydrologists, field technicians, or locally hired stream ob- servers involved in water-data collection are often unable to reach streams quickly enough to observe or measure these rapid changes. Therefore, in hydrologic studies designed to describe...
Geologic map of the MTM-15182 and MTM-15187 quadrangles, Gusev Crater-Ma'adim Vallis region, Mars
Ruslan O. Kuzmin, Ronald Greeley, Ragnhild Landheim, Nathalie A. Cabrol, Jack D. Farmer
2000, IMAP 2666
This map is one of a series of large-scale (1:500,000) geologic maps of Mars initiated by the National Aeronautics and Space Administration to investigate areas of high scientific interest. The Gusev crater–Ma’adim Vallis region includes several potential landing sites for future Mars missions, including those with a focus on...
Nutrient pollution of coastal rivers, bays, and seas
Robert Howarth, Donald Anderson, James Cloern, Chris Elfring, Charles Hopkinson, Brian Lapointe, Tom Malone, Nancy Marcus, Karen McGlathery, Andrew N. Sharpley, Dan Walker
2000, Issues in Ecology (7) 1-15
Over the past 40 years, antipollution laws have greatly reduced discharges of toxic substances into our coastal waters. This effort, however, has focused largely on point-source pollution of industrial and municipal effluent. No comparable effort has been made to restrict the input of nitrogen (N) from municipal effluent, nor to...
High Plains regional ground-water study
Kevin F. Dennehy
2000, Fact Sheet 091-00
Over the last 25 years, industry and government have made large financial investments aimed at improving water quality across the Nation. Significant progress has been made; however, many water-quality concerns remain. In 1991, the U.S. Geological Survey (USGS) began implementing a full-scale National Water-Quality Assessment Program to provide consistent and...
Geologic map of the Silverton and Howardsville quadrangles, southwestern Colorado
R. G. Luedke, W. S. Burbank
2000, IMAP 2681
Geologic studies in Alaska by the U.S. Geological Survey, 1998
Karen D. Kelley, Larry P. Gough, editor(s)
2000, Professional Paper 1615
The 14 papers that follows continue the series of U.S. Geological Survey (USGS) reports on investigations in the geologic sciences in Alaska. The series presents new and sometimes preliminary findings that are of interest to earth scientists in academia, government, and industry; to land and resource managers; and to the...
Chemical data and lead isotopic compositions of geochemical baseline samples from streambed sediments and smelter slag, lead isotopic compositions in fluvial tailings, and dendrochronology results from the Boulder River watershed, Jefferson County, Montana
Daniel M. Unruh, David L. Fey, Stan E. Church
2000, Open-File Report 2000-38
IntroductionAs a part of the U.S. Geological Survey Abandoned Mine Lands Initiative, metal-mining related wastes in the Boulder River study area in northern Jefferson County, Montana, have been evaluated for their environmental effects. The study area includes a 24-km segment of the Boulder River in and around Basin, Montana and...
Research Activities in the Spokane, Washington, Field Office
David G. Frank, Philip Moyle, Steve Box, Mike Zientek
2000, Fact Sheet 093-00
Landsat 7 on-orbit geometric calibration and performance
James C. Storey, Mike Choate
2000, Conference Paper, Proceedings, Aerosense 2000 algorithms for multispectral, hyperspectral, and ultraspectral imagery VI
The Landsat 7 Image Assessment System was developed to characterize and calibrate the radiometric and geometric performance of the Landsat 7 Enhanced Thematic Mapper Pius (ETM+) instrument. Algorithms and software assess the geometric performance of the Landsat 7 spacecraft and ETM+ sensor system and perform geometric calibration by estimating sensor...
Landsat 5/Landsat 7 underfly cross-calibration experiment
Grant R. Mah, James Vogelmann, Mike Choate
2000, Conference Paper, Proceedings, Aerosense 2000 algorithms for multispectral, hyperspectral, and ultraspectral imagery VI
There was a one-time opportunity to obtain nearly coincident coverage from both Landsat 5 and Landsat 7 as Landsat 7 drifted to its final orbital position during the initialization and verification phase following launch. During the underfly period, Landsat 7 Enhanced Thematic Mapper Plus (ETM+) data were collected using the...
Landsat 7 processing on the EROS Data Center's National Land Archive Processing System (NLAPS)
Brenda Jones, LeAnn Dix
2000, Conference Paper, Proceedings, Aerosense 2000 algorithms for multispectral, hyperspectral, and ultraspectral imagery VI
Staff at the U.S. Geological Survey (USGS) EROS Data Center (EDC) process Landsat 7 data for customer distribution on two distinct systems. The Distributed Active Archive Center (DAAC) processing is done on the Level -1 Product Generation System (LPGS), and the USGS processing is completed on the National Land Archive...
Watching the Hayward Fault
Robert W. Simpson
2000, Science (289) 1147-1148
No abstract available....
Data Report: Intra-annual variability of the diatom assemblages at Hole 1034B (Saanich Inlet) near 9 ka
Elisabeth Fourtanier, John A. Barron
2000, Proceedings of the Ocean Drilling Program: Scientific Results 169S-1
Ocean Drilling Program (ODP) Site 1034 (48°38.000´N, 123°30.000´W) was drilled at a water depth of 200 m in the Saanich Inlet, an anoxic fjord on the southeastern coast of Vancouver Island, British Columbia, to a depth of 118.2 meters below seafloor (mbsf). The uppermost 50 m consists of very well-laminated...
Charbeckia macrophylla gen. et sp. nov. from the Lower Mississippian Price (Pocono) Formation of southeastern West Virginia
Margaret Jane Knaus, Garland R. Upchurch Jr., W.H. Gillespie
2000, Review of Palaeobotany and Palynology (111) 71-92
A fossil plant discovery from the Price (Pocono) Formation of southeastern West Virginia provides new information on the poorly known compression floras of the Lower Mississippian of North America. The new plant described herein consists of long tapering bipinnate fronds with imbricate basal pinnae, planate apical pinnae, and unlobed, elliptical to obovate pinnules with open dichotomous...
Mobilization and transport of soil particles during infiltration experiments in an agricultural field, Shenandoah Valley, Virginia
Yassar H. El-Farhan, Nicole M. DeNovio, Janet S. Herman, George M. Hornberger
2000, Environmental Science & Technology (34) 3555-3559
Evidence that fine particles mobilized and transported in soils and aquifers can have a profound influence on contaminant migration has spawned much interest recently in understanding colloid transport in natural materials. Repeated infiltration experiments on an initially dry field soil were conducted to evaluate rates of mobilization of fine particles...
Sm-Nd dating of the giant Sullivan Pb-Zn-Ag deposit, British Columbia
Shao-Yong Jiang, John F. Slack, Martin R. Palmer
2000, Geology (28) 751-754
We report here Sm and Nd isotope data for hydrothermal tourmalinites and sulfide ores from the giant Sullivan Pb-Zn-Ag deposit, which occurs in the lower part of the Mesoproterozoic Purcell (Belt) Supergroup. Whole-rock samples of quartz-tourmaline tourmalinite from the footwall alteration pipe yield a Sm-Nd isochron age of 1470 ±...
Late Holocene Peléan-style eruption at Tacaná volcano, Mexico and Guatemala: past, present, and future hazards
J. L. Macias, J. M. Espíndola, A. Garcia-Palomo, K. M. Scott, S. Hughes, J C. Mora
2000, Geological Society of America Bulletin (112) 1234-1249
Tacaná volcano, located on the border between Mexico and Guatemala, marks the northern extent of the Central American volcanic chain. Composed of three volcanic structures, it is a volcanic complex that has had periodic explosive eruptions for at least the past 40 k.y. The most recent major eruption occurred at...
Composition and depositional environment of concretionary strata of early Cenomanian (early Late Cretaceous) age, Johnson County, Wyoming
E.A. Merewether, Donald L. Gautier
2000, Bulletin 1917-U
Unusual, concretion-bearing mudrocks of early Late Cretaceous age, which were deposited in an early Cenomanian epeiric sea, have been recognized at outcrops in eastern Wyoming and in adjoining areas of Montana, South Dakota, Nebraska, and Colorado. In Johnson County, Wyo., on the western flank of the Powder River Basin, these...
Overview of the Texas Source Water Assessment Project
Randy L. Ulery
2000, Fact Sheet 101-00
The 1996 Amendments to the Safe Drinking Water Act require, for the first time, that each state prepare a source water assessment for all PWS. Previously, Federal regulations focused on sampling and enforcement with emphasis on the quality of delivered water. These Amendments emphasize the importance of protecting the source...
Type locality for the Great Blue Limestone in the Bingham Nappe, Oquirrh Mountains, Utah
Mackenzie Gordon Jr., Edwin Wilson Tooker, J. Thomas Dutro
2000, Open-File Report 2000-12
No abstract available....
Ground-water flow and water quality of the Indian Island well field near Grand Island, Nebraska, 1994-95
Patrick J. Emmons, Phillip R. Bowman
2000, Fact Sheet 179-99
Ground water is the principal source of water for public and self-supplied domestic use in Nebraska. Ground water supplied about 235 Mgal/d (million gallons per day) in 1990, or about 78 percent of the estimated public-water supply in Nebraska. In addition, ground water supplied about 1,017 Mgal/d, or about 83...
Earth Explorer
Water Resources Division, U.S. Geological Survey
2000, Fact Sheet 083-00
The U.S. Geological Survey's (USGS) Earth Explorer Web site provides access to millions of land-related products, including the following: Satellite images from Landsat, advanced very high resolution radiometer (AVHRR), and Corona data sets. Aerial photographs from the National Aerial Photography Program, NASA, and USGS data sets. Digital cartographic data from...
