Recent volcano monitoring in Costa Rica
R. Thorpe, G. Brown, H. Rymer, S. Barritt, M. Randal
1985, Earthquake Information Bulletin (USGS) (17) 44-49
The Costa Rican volacno Rincon de la Vieja is loosely but mysteriously translated as the "Old Lady's Corner." It consists of six volcanic centers that form a remote elongated ridge standing some 1300m above the surrounding terraine. Geologically speaking, the Guanacaste province of northern Costa Rica consists of a series...
New York Bight fault
Deborah R. Hutchinson, John A. Grow
1985, Geological Society of America Bulletin (96) 975-989
High-resolution, single-channel and multichannel seismic-reflection profiles in the New York Bight provide 7 crossings of a 50-km-long fault that trends north-northeast for 30 km from its southern end, then bends northeast, and may continue northward beneath Long Island. Displacement, which is consistently down to the west, decreases upsection and suggests...
Occurrence and preservation of Eocene squamariacean and coralline rhodoliths: Eau, Tonga
Binyamin Buchbinder, Robert B. Halley
Donald F. Toomey, Matthew H. Nitecki, editor(s)
1985, Book chapter, Paleoalgology: Contemporary research and applications
A widespread rhodolith facies occurs within middle Eocene limestones of Eua, Tonga (Fig. 1). These limestones, first described by Hoffmeister (1932), represent a portion of a broad, early Tertiary platform that developed in the Tonga area prior to disruption and uplift by later Tertiary plate movements (Kroenke and Tongilava 1975)....
Innovative approaches to landslide hazard and risk mapping
E. E. Brabb
1985, Conference Paper, Proceedings of IVth International Conference and Field Workshop in Landslides
No abstract available....
On anelastic-earth structure and seismic waves
Roger D. Borcherdt
1985, Conference Paper, Strong ground motion simulation and earthquake engineering applications: A technology assessment
No abstract available....
Marine geology: Research beneath the sea
Sarah B. Griscom
1985, Report
Processing of Landsat imagery to map surface mineral alteration on the Alaska Peninsula: A section in USGS research on mineral resources, 1985 program and abstracts
Frederic H. Wilson, James York
1985, Circular 949
Landsat images were digitally processed to facilitate assessment of the mineral resources of the Port Moller, Stepovak Bay, and Simeonof Island 1:250,000 quadrangles. Field mapping and assessment of these quadrangles were begun in 1983 as part of the Alaska Mineral Resource Assessment Program (AMRAP). It was quickly realized that time...
Freshwater runoff and salinity distribution in the Loxahatchee River estuary, southeastern Florida, 1980-82
G.M. Russell, B. F. McPherson
1984, Water-Resources Investigations Report 83-4244
Freshwater mixed with seawater over a distance of 5 to 10 river miles in the Loxahatchee River estuary during a recent study. Large freshwater inflows vertically stratified the estuary and shifted the mixing zone seaward. In the northwest fork of the estuary, the saltwater-freshwater interface moved daily about 0.5 to...
Hydrogeology of a zone of secondary permeability in the surficial aquifer of eastern Palm Beach County, Florida
L. J. Swayze, W. L. Miller
1984, Water-Resources Investigations Report 83-4249
The surficial aquifer is the primary source of freshwater for the heavily developed coastal area in eastern Palm Beach County, Florida. Well fields are generally located in a discontinuous zone of higher secondary permeability, the northernmost extension of the Biscayne aquifer in the surficial aquifer, that extends from the Juno...
Quality of water recovered from a municipal effluent injection well in the Floridan aquifer system, Pompano Beach, Florida
D.J. McKenzie, G. A. Irwin
1984, Water-Resources Investigations Report 84-4100
Approximately 69 million gallons of backflow from an injection well used for the disposal of secondary treated municipal effluent in the Floridan aquifer system near Pompano Beach, Florida, was periodically sampled for inorganic quality from March 1975 through March 1977. Analyses of the backflow effluent showed a concomitant increase in...
Nutrient input from the Loxahatchee River Environmental Control District sewage-treatment plant to the Loxahatchee River Estuary, southeastern Florida
W. H. Sonntag, B. F. McPherson
1984, Water-Resources Investigations Report 84-4020
Two test discharges of treated-sewage effluent were made to the Loxahatchee River in February and September 1981 from the ENCON sewage-treatment plant to document nutrient loading and downstream transport of the effluent to the estuary under maximum daily discharge allowable by law (4 million gallons per day). Concentrations of total...
Attenuation of stormwater contaminants from highway runoff within unsaturated limestone, Dade County, Florida
Bradley G. Waller, Howard Klein, Lawrence J. Lefkoff
1984, Water-Resources Investigations Report 84-4083
Infiltration of stormwater in heavily urbanized parts of Dade County, Florida, is a prime source of recharge to the unconfined Biscayne aquifer, the sole source of drinking water for southeast Florida. Ponded stormwater at the test site contained greater concentrations of lead, zinc, manganese, nitrogen (except nitrate), and phosphorus than...
Water resources data for Maryland and Delaware, water year 1983
R.W. James, R.H. Simmons, B.F. Strain
1984, Water Data Report MD-DE-83-1
No abstract available. ...
Addresses, topics of interest, and geographic distribution of professors working on landslides in the United States
E. E. Brabb, Ann R. FitzSimmons
1984, Report
The effect of composition of selected groundwaters from the Basin and Range Province on plutonium, neptunium, and Americium speciation
Terry F. Rees, Jess M. Cleveland, Kenneth L. Nash
1984, Nuclear Technology (65) 131-137
The speciation of plutonium, neptunium, and americium was determined in groundwaters from four sources in the Basin and Range Province: the lower carbonate aquifer, Nevada Test Site (NTS) (Crystal Pool); alluvial fill, Frenchman Flat, NTS (well 5C); Hualapai Valley, Arizona (Red Lake south well); and Tularosa Basin, New Mexico (Rentfrow...
A transect of metamorphic rocks along the Copper River, Cordova and Valdez Quadrangles, Alaska: A section in The United States Geological Survey in Alaska: Accomplishments during 1982
Marti L. Miller, Julie A. Dumoulin, S.W. Nelson
1984, Circular 939
The lower Tertiary Orca Group is juxtaposed against the Upper Cretaceous Valdez Group along the Contact fault system (Winkler and Plafker, 1974, 198; Plafker and others, 1977)(fig. 33). In both groups, turbidites are the dominant rock type, with lesser mafic volcanic rocks (table 10). The Valdez Group, on the north,...
Flooding: A unique year
A.L. Putnam
1984, Report, United States Geological Survey Yearbook, Fiscal Year 1983
Floods have been and continue to be one of the most destructive hazards facing the people of the United States. Of all the natural hazards, floods are the most widespread and the most ruinous to life and property. Today, floods are a greater menace to our welfare than ever before...
Developing a state water plan: Ground-water conditions in Utah, spring of 1984
Charles Avery, L. R. Herbert, Donald A. Bischoff, David W. Clark, Ralph L. Seiler, Kevin Guttormson, Melanie S. Elizondo, V.L. Jensen, Michael Enright, D. C. Emett, Carole B. Burden, M.R. Eckenwiler, G. W. Sandberg
1984, Cooperative Investigations Report 24
This is the twenty-first in a series of annual reports that describe ground-water conditions in Utah. Reports in this series, published cooperatively by the U.S. Geological Survey and the Utah Division of Water Resources, provide data to enable interested parties to keep abreast of changing ground-water conditions.This report, like the...
Floods of May to June, 1983, along the northern Wasatch Front, Salt Lake City to North Ogden, Utah
K.L. Lindskov
1984, Utah Geological and Mineralogical Survey Water-Resources Bulletin 24
Determinations of peak discharge for floods of May to June 1983 were made for 11 streams along the northern Wasatch Front from Salt Lake City to North Ogden. At nine of the streams, the floods during the spring of 1983 equaled or exceeded the 100-year flood. The peak discharge at...
Zeolites replacing plant fossils in the Denver formation: Lakewood, Colorado
P.J. Modreski, E.R. Verbeek, M. A. Grout
1984, Rocks & Minerals (59) 18-28
No abstract available. ...
History of the Colorado-Wyoming state line diatremes
D. S. Collins, A. V. Heyl
1984, Rocks & Minerals (59) 35-37
No abstract available. ...
Colorado amethyst
T.C. Michalski
1984, Rocks & Minerals (59) 7-12
No abstract available. ...
Guidelines for earthquake predictors
Henry Spall, editor(s)
1984, Earthquake Information Bulletin (USGS) (16) 166-169
[none]...
Assessing historical seismicity
Henry Spall, editor(s)
1984, Earthquake Information Bulletin (USGS) (16) 193-193
[none]...
Old seismographs still operation in northern California
Henry Spall, editor(s)
1984, Earthquake Information Bulletin (USGS) (16) 194-195
[none]...
