The potentiometric surface and water quality of the Floridan aquifer; in southwest Hillsborough County, Florida, 1952-74
A. Dan Duerr
1975, Water-Resources Investigations Report 75-50
Large ground-water withdrawals and a 10-year period of below-normal rainfall have caused the potentiometric surface of the Floridan aquifer to decline more than 10 feet (3 metres) in most of a 200-square-mile (520-square-kilometre) area of southwest Hillsborough County (fig. 1). The lowered ground-water levels and the consequent threat of salt-water...
Water resources data for Alabama, water year 1974; Part 1, Surface water records
Water Resources Division, U.S. Geological Survey
1975, Water Data Report AL-74-1
Water-quality assessment of the Indiana Dunes National Lakeshore, 1973-74
Leslie D. Arihood
1975, Water-Resources Investigations Report 75-14
The Indiana Dunes National Lakeshore is underlain by unconsolidated lake and glacial deposits which have been divided into three units. Unit 1 is comprised mostly of sand and, in the western part of the National Lakeshore, is capable of yielding more than 500 gallons per minute (32 litres per second)...
Electric-log sections from uranium areas in the South Texas coastal plain, Atascosa, Bee, Duval, Karnes, Live Oak, and McMullen counties, Texas
Dolan H. Eargle, Beth O. Davis
1975, Open-File Report 75-122
Selected geologic literature on the California continental borderland and adjacent areas, to January 1, 1975
Albert Eugene Roberts
1975, Circular 714
Possible effects of vegetation conversion on runoff and sediment yield, Sycamore Creek watersheds, Maricopa County, Arizona; calibration period analysis
H. W. Hjalmarson
1975, Open-File Report 75-425
Slope map of part of west-central King County, Washington
Water Resources Division, U.S. Geological Survey
1975, IMAP 852-E
No abstract available....
Influence of rainfall and ancient landslide deposits on recent landslides (1950-71) in urban areas of Contra Costa County, California
Tor Helge Nilsen, Barbara L. Turner
1975, Bulletin 1388
No abstract available....
ERTS imagery for ground-water investigations
Gerald K. Moore, Morris Deutsch
1975, Ground Water (13) 214-226
ERTS imagery offers the first opportunity to apply moderately high-resolution satellite data to the nationwide study of water resources. This imagery is both a tool and a form of basic data. Like other tools and basic data, it should be considered for use in ground-water investigations. The main advantage of...
College and university sources of remote sensing information
Timothy C. Bidwell
1975, Photogrammetric Engineering and Remote Sensing (41) 1273-1284
Research in remote-sensing applications has increased dramatically since the launch of the Earth Resources Technology Satellite-l (ERTS-l, renamed LANDSAT-I) and Skylab's Earth Resources Experiment Package (EREP). It is becoming increasingly more difficult to keep abreast of university research publications related to remote sensing. To assist researchers in locating those universities...
The interior of the earth
Eugene C. Robertson
1975, Report
The center of the Earth lies nearly 4,000 miles beneath our feet. At present the nature of the Earth's interior is known only from indirect evidence collected from studies of rocks and minerals, seismic waves, heat flow from the interior, and the Earth's gravity and magnetic field and through comparisons...
Paleotectonic investigations of the Pennsylvanian system in the United States, Part III: Plates
Edwin D. McKee, Eleanor J. Crosby
1975, Professional Paper 853-3
No abstract available....
Movement of spilled oil as predicted by estuarine nontidal drift
T. J. Conomos
1975, Limnology and Oceanography (20) 159-173
Information on water movement obtained from bimonthly releases of surface and seabed drifters in the San Francisco Bay and adjacent Pacific Ocean is used to understand major processes controlling dispersal of oil after a spill of 3,200 m3 of Bunker C in the bay in January 1971. River-induced nontidal estuarine...
Paleotectonic investigations of the Pennsylvanian System in the United States, Part I: Introduction and regional analyses of the Pennsylvanian System
Edwin D. McKee, Eleanor J. Crosby, George O. Bachman, Kenneth G. Bell, George H. Dixon, Sherwood E. Frezon, Ernest E. Glick, William P. Irwin, William W. Mallory, William J. Mapel, Edwin K. Maughan, George E. Prichard, Gerald L. Shideler, Gary F. Stewart, Harold R. Wanless, Richard F. Wilson
1975, Professional Paper 853-1
The Pennsylvanian is the fourth geologic system to be analyzed and synthesized by geologists of the U.S. Geological Survey in the form of a paleotectonic study covering the conterminous United States. Earlier investigations were of the Jurassic, Triassic, and Permian Systems. Results were published as Miscellaneous Geologic Investigation Maps I-175,...
Earthquakes; March-April 1975
W. J. Person
1975, Earthquake Information Bulletin (USGS) (7) 21-22
There were no major earthquakes (magnitude 7.0-7.9) in March or April; however, there were earthquake fatalities in Chile, Iran, and Venezuela and approximately 35 earthquake-related injuries were reported around the world. In the United States a magnitude 6.0 earthquake struck the Idaho-Utah border region. Damage was estimated at about a...
Sediment yields of streams in the Umpqua River Basin, Oregon
D. A. Curtiss
1975, Report
This report summarizes sediment data collected at 11 sites in the Umpqua River basin from 1956 to 1973 and updates a report by C. A. Onions (1969) of estimated sediment yields in the basin from 1956-67. Onions' report points out that the suspended-sediment data, collected during the 1956-67 period, were...
Ground-water quality in selected areas serviced by septic tanks, Dade County, Florida
William A. Pitt, Harold C. Mattraw Jr., Howard Klein
1975, Open-File Report 75-607
During 1971-74, the U.S. Geological Survey investigated the chemical, physical, bacteriological, and virological characteristics of the ground water in five selected areas serviced by septic tanks in Dade County, Florida. Periodic water samples were collected from multiple-depth groups of monitor wells ranging in depth from 10 to 60 ft at...
Water and the South Florida environment
Howard Klein, J.T. Armbruster, B. F. McPherson, H.J. Freiberger
1975, Water-Resources Investigations Report 75-24
Ecological problems are a major concern to Florida as well as to the Nation. National attention was focused on these problems in September 1968, when the Port Authority of Dade County began to con-struct a jetport for supersonic aircraft on a 39-square-mile tract 6 miles north of Everglades National Park...
Middle tertiary volcanic field in the southern Rocky Mountains
T. A. Steven
1975, Memoir of the Geological Society of America (144) 75-94
A widespread volcanic field covered most of the Southern Rocky Mountains in middle Tertiary time, 40 to 25 m.y. ago (approximately Oligocene time). This field covered an erosion surface that beveled structures formed during the Laramide orogeny in Late Cretaceous and early Tertiary time. The source vents from which the...
Rates of dissolution of aluminosilicates in seawater
A. Lerman, F.T. MacKenzie, O.P. Bricker
1975, Earth and Planetary Science Letters (25) 82-88
Dissolution of eight clay minerals, four zeolites, and quartz in seawater has been monitored for 8 1 2 years. For most of the minerals, dissolution can be described as a first-order reaction in which dissolved silica approaches from undersaturation steady concentration values with time. Characteristic reaction rate constants (k1) are...
An outbreak of a hemorrhagic disease in white-tailed deer in Kentucky
Robert D. Roughton
1975, Journal of Wildlife Diseases (11) 177-186
In 1971, an outbreak of a hemorrhagic disease occurred in captive and free-ranging white-tailed deer (Odocoileus virginianus) in Mammoth Cave National Park, Kentucky. Clinical signs and gross pathological lesions were consistent with those of epizootic hemorrhagic disease and bluetongue, as were serological and histopathological findings for samples sent to other...
Prediction of maximum earthquake intensities for the San Francisco Bay region
Roger D. Borcherdt
1975, Conference Paper, Proceedings of U.S. national conference on earthquake engineering 1975, Ann Arbor, Michigan, June 18--20, 1975
No abstract available....
The vourinos ophiolite, Greece: Cyclic units of lineated cumulates overlying harzburgite tectonite
E. D. Jackson, H.W. Greene, E.M. Moores
1975, Geological Society of America Bulletin (86) 390-398
Re-examination of the Vourinos ophiolite shows it to be composed of metamorphic tectonites, cumulates, plagiogranites, dikes, and lava. The contact between the tectonites and the cumulates is exposed and sharp. Beneath the cumulate contact, the rocks have been highly deformed and complexly folded; above that contact, they simply have been...
Effect of geologic structure and metamorphic fluids on seismic behavior of the San Andreas fault system in central and northern California
William P. Irwin, Ivan Barnes
1975, Geology (3) 713-716
No abstract available....
Radiometric age map of southwest Alaska
Frederic H. Wilson, D. L. Turner
1975, Alaska Division of Geological & Geophysical Surveys Open File Report DGGS AOF 84
This map includes published, thesis, and open-file radiometric data available to us as of June, 1975. Some dates are not plotted because of inadequate location data in the original references.The map is divided into five sections, based on 1:1,000,000 scale enlargements of the National Atlas maps of Alaska. Within each...
