Bog iron formation in the Nassawango Watershed, Maryland
Owen P. Bricker, Wayne L. Newell, Nancy S. Simon
2003, Open-File Report 2003-346
IntroductionBog iron deposits occur at a number of localities in the Pocomoke River basin. The most extensive deposits are situated along Nassawango Creek northwest of Snow Hill, a town on the Pocomoke River. After the discovery of these deposits an iron furnace was built in 1830 on the west side...
Geochemistry of bedrock and glacial deposits in the vicinity of the Bend massive sulfide deposit, north central Wisconsin
Laurel G. Woodruff, John W. Attig, William F. Cannon, Suzanne W. Nicholson, Klaus Schulz
2003, Open-File Report 2003-353
In 1998 the U.S. Geological Survey (USGS) initiated a study to examine the natural regional environmental impact of sulfide mineralization exposed to episodic weathering and glaciation. The study focused on the Bend copper-gold massive sulfide deposit located in the Medford District of the Chequamegon National Forest in north central Wisconsin....
Archive of boomer seismic reflection data collected during USGS cruises 01SCC01 and 01SCC02, Timbalier Bay and offshore East Timbalier Island, Louisiana, June - August, 2001
Karynna Calderon, Shawn V. Dadisman, James G. Flocks, Jack L. Kindinger, Dana S. Wiese
2003, Open-File Report 2003-274
In June, July, and August of 2001, the U.S. Geological Survey (USGS), in cooperation with the University of New Orleans (UNO), the U.S. Army Corps of Engineers, and the Louisiana Department of Natural Resources, conducted a shallow geophysical and sediment core survey of Timbalier Bay and the Gulf of Mexico...
Texture, Carbonate Content, and Preliminary Maps of Surficial Sediments of the Flower Garden Banks Area, Northwestern Gulf of Mexico Outer Shelf
Kathryn M. Scanlon, Seth D. Ackerman, Jill E. Rozycki
2003, Open-File Report 2003-2
The purpose of this report is to release texture and carbonate content analyses of 107 seafloor sediments collected within and near the East and West Flower Garden Banks areas of the Sanctuary and to show relationships between these data and existing bathymetric data. The sediment data, in conjunction with previously...
A bibliography of Klamath Mountains geology, California and Oregon, listing authors from Aalto to Zucca for the years 1849 to Mid-2003
William P. Irwin (compiler)
2003, Open-File Report 2003-306
This bibliography of Klamath Mountains geology was begun, although not in a systematic or comprehensive way, when, in 1953, I was assigned the task of preparing a report on the geology and mineral resources of the drainage basins of the Trinity, Klamath, and Eel Rivers in northwestern California. During the...
Archive of boomer seismic reflection data: Collected during USGS Cruise 97KEY01, upper and middle Florida Keys, 12 October - 1 November, 1997
Gina M. Peery, Barbara H. Lidz, Dana S. Wiese
2003, Open-File Report 2002-421
No abstract available....
User's Manual for the National Water-Quality Assessment Program Invertebrate Data Analysis System (IDAS) Software: Version 3
Thomas F. Cuffney
2003, Open-File Report 2003-172
The Invertebrate Data Analysis System (IDAS) software provides an accurate, consistent, and efficient mechanism for analyzing invertebrate data collected as part of the National Water-Quality Assessment Program and stored in the Biological Transactional Database (Bio-TDB). The IDAS software is a stand-alone program for personal computers that run Microsoft (MS) Windows?....
Petroleum source potential of the Lower Cretaceous mudstone succession of the NPRA and Colville Delta area, North Slope Alaska, based on sonic and resistivity logs
Margaret A. Keller, Kenneth J. Bird
2003, Open-File Report 2003-325
Resource assessment of the North Slope of Alaska by the U. S. Geological Survey includes evaluation of the petroleum source potential of Mesozoic and Cenozoic rocks using the delta log R technique (Passey and others, 1990). Porosity and resistivity logs are used in combination with thermal maturity data to produce...
Shaded relief aeromagnetic map of the Santa Clara Valley and vicinity, California
Carter W. Roberts, Robert C. Jachens
2003, Open-File Report 2003-360
This aeromagnetic map covers the southern portion of San Francisco Bay, the Santa Clara Valley and surrounding mountains, part of which has been modelled in threedimensions (Jachens and other, 2001). The magnetic anomaly map has been compiled from existing digital data. Data was obtained from six aeromagnetic surveys that were...
Interpreting DNAPL saturations in a laboratory-scale injection with GPR data and direct core measurements
Raymond H. Johnson, Eileen P. Poeter
2003, Open-File Report 2003-349
Ground penetrating radar (GPR) is used to track a dense non-aqueous phase liquid (DNAPL) injection in a laboratory sand tank. Before data reduction, GPR data provide a qualitative measure of DNAPL saturation and movement. One-dimensional (1D) GPR modeling provides a quantitative interpretation of DNAPL volume within a given thickness during...
North Alaska petroleum system analysis: The regional map compilation
Richard W. Saltus, Kenneth J. Bird
2003, Open-File Report 2003-330
The U.S. Geological Survey initiated an effort to model north Alaskan petroleum systems. The geographic and geologic basis for modeling systems is provided by a set of regional digital maps that allow evaluation of the widest possible extent of each system. Accordingly, we laid out a rectangular map grid 1300...
Alaskan North Slope petroleum systems
L. B. Magoon, P. G. Lillis, K. J. Bird, C. Lampe, K. E. Peters
2003, Open-File Report 2003-324
Six North Slope petroleum systems are identified, described, and mapped using oil-to-oil and oil-to-source rock correlations, pods of active source rock, and overburden rock packages. To map these systems, we assumed that: a) petroleum source rocks contain 3.2 wt. % organic carbon (TOC); b) immature oil-prone source rocks have hydrogen...
LakeVOC; A Deterministic Model to Estimate Volatile Organic Compound Concentrations in Reservoirs and Lakes
David A. Bender, William E. Asher, John S. Zogorski
2003, Open-File Report 2003-212
This report documents LakeVOC, a model to estimate volatile organic compound (VOC) concentrations in lakes and reservoirs. LakeVOC represents the lake or reservoir as a two-layer system and estimates VOC concentrations in both the epilimnion and hypolimnion. The air-water flux of a VOC is characterized in LakeVOC in terms of...
Bed-sediment grain-size and morphologic data from Suisun, Grizzly, and Honker Bays, CA, 1998-2002
Margaret A. Hampton, Noah P. Snyder, John L. Chin, Dan W. Allison, David M. Rubin
2003, Open-File Report 2003-250
The USGS Place Based Studies Program for San Francisco Bay investigates this sensitive estuarine system to aid in resource management. As part of the inter-disciplinary research program, the USGS collected side-scan sonar data and bed-sediment samples from north San Francisco Bay to characterize bed-sediment texture and investigate temporal trends in...
Empirical modified Mercalli intensity site corrections for towns in eastern North America
W. H. Bakun, M. G. Hopper
2003, Open-File Report 2003-377
Modified Mercalli intensity (MMI) assignments for earthquakes in eastern North America (ENA) were used by Bakun et al. (2003) and Bakun and Hopper (in press) to develop models for estimating the location and moment magnitude M of earthquakes in ENA from MMI observations. The MMI empirical site corrections developed and...
Bathymetric and geophysical surveys of Englebright Lake, Yuba-Nevada Counties, California
Jonathan R. Childs, Noah P. Snyder, Margaret A. Hampton
2003, Open-File Report 2003-383
Harry L. Englebright Lake is a 9-mile-long (14-kilometer) reservoir located in the Sierra Nevada foothills of northern California on the Yuba River gorge known as The Narrows. The reservoir is impounded by Englebright Dam (Photo 1), a concrete arch structure spanning 348 meters (1,142 feet) across and 79 meters (260...
Overview of the Alaska North Slope posters presented at the American Association of Petroleum Geologists (AAPG) annual meeting in Salt Lake City, Utah, USA during May 11-14, 2003: a status report of the U. S. Geological Survey Alaska petroleum studies
K. J. Bird
2003, Open-File Report 2003-323
A poster prepared for the Annual Meeting of the American Association of Petroleum Geologists in Salt Lake City, Utah, May 11-14, 2003....
Aeromagnetic surveys in Yukon Flats Alaska, a website for the distribution of data
Philip J. Brown
2003, Open-File Report 2003-319
No abstract available....
Geochemical characterization of slags, other mine waste, and their leachate from the Elizabeth and Ely Mines (Vermont), the Ducktown Mining District (Tennessee), and the Clayton Smelter Site (Idaho)
Nadine M. Piatak, Robert R. Seal II, Jane M. Hammarstrom, Allen L. Meier, Paul H. Briggs
2003, Open-File Report 2003-260
Waste-rock material produced at historic metal mines contains elevated concentrations of potentially toxic trace elements. Two types of mine waste were examined in this study: sintered waste rock and slag. The samples were collected from the Elizabeth and Ely mines in the Vermont copper belt (Besshi-type massive sulfide deposits), from...
Preliminary geochemical, microbiological, and epidemiological investigations into possible linkages between lignite aquifers, pathogenic microbes, and kidney disease in northwestern Louisiana
Joseph E. Bunnell, Rebecca N. Bushon, Donald M. Stoeckel, Amie M. Gifford, Marisa Beck, Harry E. Lerch, Runhua Shi, Benton McGee, Bradford C. Hanson, Jonathan Kolak, Peter D. Warwick
2003, Open-File Report 2003-374
In May 2002, 15 wells and four surface water sites were sampled, and in September 2002, those same wells and sites plus four additional surface sites were sampled in five parishes of northwestern Louisiana. A geographic information system (GIS) was used to select residential water wells for sampling. Well water...
Geophysical surveys of Bear Lake, Utah-Idaho, September, 2002
Jane F. Denny, Steve M. Colman
2003, Open-File Report 2003-150
The U.S. Geological Survey, in cooperation with researchers from several universities, has been studying the sediments of Bear Lake since 1996. The general purpose of this effort is to reconstruct past limnological conditions and regional climate on a range of timescales, from hundreds of years to hundreds of thousands of...
Publications of the Western Earth Surface Processes Team 2002
Charles Powell II, R. W. Graymer
2003, Open-File Report 2003-363
The Western Earth Surface Processes Team (WESPT) of the U.S. Geological Survey (USGS) conducts geologic mapping and related topical earth science studies in the western United States. This work is focused on areas where modern geologic maps and associated earth-science data are needed to address key societal and environmental issues...
Preliminary analyses for perchlorate in selected natural materials and their derivative products
G. J. Orris, G. J. Harvey, D. T. Tsui, J. E. Eldrige
2003, Open-File Report 2003-314
Increasing concern about sources of perchlorate contamination in ground and surface waters has led to interest in identifying potential sources of natural perchlorate and products derived from these natural sources. To date, most perchlorate found in ground and surface waters has been attributed to its major uses as an oxidizer...
Preliminary geologic map of the San Bernardino 30' x 60' quadrangle, California (includes preliminary GIS database)
Douglas M. Morton, Fred K. Miller
2003, Open-File Report 2003-293
The San Bernardino 30'x60' quadrangle, southern California, is diagonally bisected by the San Andreas Fault Zone, separating the San Gabriel and San Bernardino Mountains, major elements of California's east-oriented Transverse Ranges Province. Included in...
Sandstone and shale compaction curves derived from sonic and gamma ray logs in offshore wells, North Slope, Alaska– Parameters for basin modeling
Elisabeth L. Rowan, Daniel O. Hayba, Philip H. Nelson, W. Matthew Burns, David W. Houseknecht
2003, Open-File Report 2003-329
Representative compaction curves for the principle lithologies are essential input for reliable models of basin history. Compaction curves influence estimates of maximum burial and erosion. Different compaction curves may produce significantly different thermal histories. Default compaction curves provided by basin modeling packages may or may not be a good proxy...
