Last interglacial sea-surface temperature estimates from the California margin; improvements to the modern analog technique
Harry J. Dowsett, Richard Z. Poore
1999, Bulletin 2171
Total faunal analyses of planktic foraminifer assemblages are used to derive sea surface temperature estimates for the last interglacial from Ocean Drilling Program Sites 1018 and 1020 off northern and central California. Foraminifer assemblage data were transformed to sea-surface temperature (SST) estimates by using the modern analog technique (MAT). In...
Turbidite pathways in Cascadia Basin and Tufts abyssal plain, Part A, Astoria Channel, Blanco Valley, and Gorda Basin
Stephen C. Wolf, Michael R. Hamer
1999, Open-File Report 99-157
This open-file report was prepared in support of the USGS Earthquake Hazards of Cascadia Project. The primary objective of this phase of the project is to determine recurrence intervals of turbidites in Cascadia basin-floor channel systems and evaluate implications of this event record for the paleoseismic history of the Cascadia...
Geology of the Cordelia and the northern part of the Benicia 7.5 minute quadrangles, California: A digital map database
R. W. Graymer, E. E. Brabb, D. L. Jones
1999, Open-File Report 99-162
No abstract available....
Extensometer, water-level, and lithologic data from Bacon and Bethel Islands in Sacramento-San Joaquin Delta, California, September 1987 to August 1993
Barry D. Kerr, David A. Leighton
1999, Open-File Report 98-631
Compaction, water-level, and lithologic data were collected at extensometer sites on Bacon and Bethel Islands, anchored at 436 and 536 feet below land surface, respectively. The data reported here are part of a study of the processes causing subsidence in the Sacramento?San Joaquin Delta. The depths were selected to ensure...
MASSPEC; a PC program to control and to process data from an automated mass spectrometer
R. C. Bigelow, R. B. Vaughn, S. E. Church
1999, Open-File Report 99-161
Water-quality assessment of the eastern Iowa basins: Data, September 1995 through September 1996
Kimberlee K.B. Akers, Douglas J. Schnoebelen, Mark E. Savoca, Linda R. Roberts, Kent Becher
1999, Open-File Report 99-66
The U.S. Geological Survey began data-collection activities in the Eastern Iowa Basins study unit of the National Water-Quality Assessment Program in September 1995 with the purpose of determining the status and trends in water quality. Surface-water data were collected, beginning in March 1996, on a monthly basis with occasional extra...
Modified Mercalli intensities for some California north-coast earthquakes
W. H. Bakun
1999, Open-File Report 99-171
Modified Mercalli Intensity (MMI) data are used by Bakun (in preparation) to estimate the location and moment magnitude M of California north-coast earthquakes from MMI observations only. The MMI data and site corrections used by Bakun (in preparation) are listed in this Open-file Report. This report is also accessible at...
An ARC/Info point coverage of Mineral Resource Data System (MRDS) locations in eleven western states
David G. Frank
1999, Open-File Report 99-169
This ARC/Info coverage, derived from the USGS Mineral Resource Data System (MRDS), contains 60,490 records that fall within the states of Arizona, California, Colorado, Idaho, Montana, New Mexico, Nevada, Oregon, Utah, Washington, Wyoming. The dataset has 13 fields containing information on record identification, location, commodity, geology, and deposit type. The...
Alaska resource data file: Medfra quadrangle
T. K. Bundtzen
1999, Open-File Report 99-156
No abstract available....
Digital geologic map of the Sandpoint 1- by 2-degree quadrangle, Washington, Idaho, and Montana
F. K. Miller, R. F. Burmester, R. E. Powell, D. M. Miller, P. D. Derkey
1999, Open-File Report 99-144
The geology of the Sandpoint 1:250,000 quadrangle, Washington, Idaho, and Montana was mapped by F.K. Miller, R.F. Burmester, D.M. Miller, and R.E. Powell between 1963 and 1995 onto a scale-stable 1:250,000 topographic map base and subsequently input into an Arc/Info geographic information system (GIS) by P.D. Derkey. The digital geologic...
Water-quality and lake-stage data for Wisconsin lakes, water year 1998
Dale M. Robertson, J. F. Elder, H.S. Garn, G. L. Goddard, S.B. Marsh, D.L. Olson, W. J. Rose
1999, Open-File Report 99-98
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...
Physical, chemical, and biological data for two sites on the upper Kenai River, Alaska, 1998
Joseph M. Dorava, Lee Ness
1999, Open-File Report 99-258
Water-quality data were collected and stream characteristics were documented from two sites along the upper Kenai River in the Kenai National Wildlife Refuge, Alaska. These data were collected to describe the current status of the sites and to provide baseline information from which changes in the future could be evaluated....
Alaska resource data file: Talkeetna quadrangle
Madelyn Millholland
1999, Open-File Report 99-139
No abstract available....
Identification of potential wetlands in training areas on Ravenna Army Ammunition Plant, Ohio, and guidelines for their management
C. W. Schalk, J.S. Tertuliani, R.A. Darner
1999, Open-File Report 99-68
Potential wetlands in training areas on Ravenna Army Ammunition Plant, Ohio, were mapped by use of geographic information system (GIS) data layers and field inspection. The GIS data layers were compiled from existing sources and interpretation of aerial photography. Data layers used in the GIS analysis were wetland-plant communities, hydric...
Puget Sound aeromagnetic maps and data
Richard J. Blakely, Ray E. Wells, Craig S. Weaver
1999, Open-File Report 99-514
Selected ground-water data for Yucca Mountain region, southern Nevada and eastern California, through December 1997
R.J. La Camera, G.L. Locke, R.H. Munson
1999, Open-File Report 98-628
Open Skies aerial photography of selected areas in Central America affected by Hurricane Mitch
Bruce Molnia, Cheryl A. Hallam
1999, Circular 1181
Between October 27 and November 1, 1998, Central America was devastated by Hurricane Mitch. Following a humanitarian relief effort, one of the first informational needs was complete aerial photographic coverage of the storm ravaged areas so that the governments of the affected countries, the U.S. agencies planning to provide assistance,...
Sustainable growth in America's heartland: 3-D geologic maps as the foundation
Central Great Lakes Geologic Mapping Coalition, Illinois State Geological Survey, Indiana Geological Survey, Michigan Geological Survey Division, Ohio Division of Geological Survey, Water Resources Division, U.S. Geological Survey
1999, Circular 1190
The Central Great Lakes States of Illinois, Indiana, Michigan, and Ohio constitute one of the most productive and economically important regions in the country—America’s heartland. The agriculture, industry, business, recreation, and ecology of these States are based on a common geologic heritage. During the last 1.8 million years, glaciers repeatedly...
Water-quality assessment of the Delmarva Peninsula, Delaware, Maryland, and Virginia: Results of investigations, 1987-91
Robert J. Shedlock, J. M. Denver, M. A. Hayes, P. A. Hamilton, M.T. Koterba, L. J. Bachman, P. J. Phillips, W. S. Banks
1999, Water Supply Paper 2355-A
A regional ground-water-quality assessment of the Delmarva Peninsula was conducted as a pilot study for the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program. The study focused on the surficial aquifer and used both existing data and new data collected between 1988 and 1991. The new water samples were analyzed...
Lithologic, age group, magnetopolarity, and geochemical maps of the Springerville Volcanic Field, east-central Arizona
Christopher D. Condit, Larry S. Crumpler, Jayne C. Aubele
1999, IMAP 2431
The Springerville volcanic field is one of the many late Pliocene to Holocene, mostly basaltic, volcanic fields present near the Colorado Plateau margin (fig. 1, in pamphlet). The field overlies the lithospheric transition zone between the Colorado Plateau and the Basin and Range Province (Condit and others, 1989b). Establishing relations...
Cobalt-rich ferromanganese crusts in the Pacific
James R. Hein, Andrea Koschinsky, Michael Bau, Frank T. Manheim, Jung-Keuk Kang, Leanne Roberts
D.S. Cronan, editor(s)
1999, Book chapter, Handbook of marine mineral deposits
Co-rich Fe-Mn crusts occur throughout the Pacific on seamounts, ridges, and plateaus where currents have kept the rocks swept clean of sediments at least intermittently for millions of years. Crusts precipitate out of cold ambient sea water onto hard-rock substrates forming pavements up to 250 mm thick. Crusts are important...
Anoxia pre-dates Frasnian–Famennian boundary mass extinction horizon in the Great Basin, USA
John F. Bratton, William B. N. Berry, Jared R. Morrow
1999, Palaeogeography, Palaeoclimatology, Palaeoecology (154) 275-292
Major and trace metal results from three Great Basin stratigraphic sections with strong conodont biostratigraphy identify a distinct anoxic interval that precedes, but ends approximately 100 kyr before, the Frasnian–Famennian (F–F, mid-Late Devonian) boundary mass extinction horizon. This horizon corresponds to the final and most severe step of a more...
A test of the variable circular-plot method where exact density of a bird population was known
Jay T. Nelson, Steven G. Fancy
1999, Pacific Conservation Biology (5) 139-143
Variable circular-plot (VCP) counts are statistically more sound than point counts because they are adjusted for the probability of detecting birds at different distances and under different conditions. However, many ornithologists use point counts rather than VCP counts because they believe that assumptions of the VCP method are almost always...
Archive of the ISIS sidescan sonar and DGPS navigation field data collected on USGS cruise 96005, 1-14 June, 1996; 61 lines
G.F. Williams, W. C. Schwab, W. W. Danforth
1999, Open-File Report 98-798
Stable isotope data and AMS 14C dates from Arctic Ocean Section 1994 surface sediment transect and box core samples from the Mendeleyev Ridge area
R.Z. Poore, D.R. Ostermann, J. P. McGeehin
1999, Open-File Report 99-48
