Orientale and Caloris
J.F. McCauley
1977, Physics of the Earth and Planetary Interiors (15) 220-250
Applications of experimental explosion-crater data to Orientale and recent geologic mapping of the basin have produced a new stratigraphy and genetic model for Orientale that are also applicable to Caloris. The inner-basin scarp of Orientale is thought to be a bench separating the upper parts of the basin from its...
Breeding avifauna of the south San Francisco Bay estuary
Robert E. Gill Jr.
1977, Western Birds (8) 1-12
San Francisco Bay represents one of the largest estuarine areas on the Pacific Coast of North America. Its open waters, tidal flats, tidal marshes and solar evaporation ponds provide critical foraging, resting and breeding habitat for migratory and resident birds. The avifauna of San Francisco Bay has received considerable attention;...
Application of gold compositional analyses to mineral exploration in the United States
J.C. Antweiler, W. L. Campbell
1977, Journal of Geochemical Exploration (8) 17-29
Native gold is a mineral composed of Au, Ag and Cu in solid solution and it usually contains one or more trace metals as lattice impurities, as mineral inclusions, in grain boundaries or in surface coatings. Alloy proportions of Au, Ag and Cu, together with certain other elements, can...
Landslides
T. H. Nilsen
1977, Earthquake Information Bulletin (USGS) (9) 27-33
Landslides are frequent in areas where there is high seismicity and steep slopes. Landslides associated with earthquakes may cause as much damage as the initial ground shaking. They may also occur long after the earthquake. Some of the major earthquakes that have occurred during the past 15 years demonstrate the hazards...
Mechanical and hydraulic properties of rocks related to induced seismicity
P. A. Witherspoon, J.E. Gale
1977, Engineering Geology (11) 23-55
Witherspoon, P.A. and Gale, J.E., 1977. Mechanical and hydraulic properties of rocks related to induced seismicity. Eng. Geol., 11(1): 23-55. The mechanical and hydraulic properties of fractured rocks are considered with regard to the role they play in induced seismicity. In many cases, the mechanical properties of fractures determine the...
Rise of a variable-viscosity fluid in a steadily spreading wedge-shaped conduit with accreting walls
Arthur H. Lachenbruch, Manuel Nathenson
1976, Journal of Research of the U.S. Geological Survey (4) 181-188
Relatively rigid plates making up the outer 50 to 100 km of the Earth are steadily separating from one another along narrow globe-circling zones of submarine volcanism, the oceanic spreading centers. Continuity requires that the viscous underlying material rise beneath spreading centers and accrete onto the steadily diverging plates. It...
Tectonic framework of petroliferous rocks in Alaska: hydrocarbons
Arthur Grantz, C.E. Kirschner
1976, Book chapter, Circum-Pacific energy and mineral resources (AAPG Memoir 25)
Alaska, which contains about 28% of the land and continental shelf of the United States, is estimated by the U.S. Geological Survey to contain about one third of the nation's undiscovered oil and about one sixth of its undiscovered natural gas. The Survey estimates that fields discovered in Alaska through...
Volcanic rocks and processes of the Mid-Atlantic Ridge rift valley near 36 ° 49′ N
R. Hekinian, J.G. Moore, W.B. Bryan
1976, Contributions to Mineralogy and Petrology (58) 83-110
Eighty samples of submarine basaltic lava were sampled from an 8 km segment of the floor and walls of the inner rift valley of the Mid-Atlantic Ridge during the French American Mid-Ocean Undersea Study (project Famous). The samples were collected from outcrops and talus slopes by the three submersibles:...
On the origin of the livingstonite deposits at Huitzuco, Guerrero, Mexico
G. Tunell, R. E. Learned, E.F. Lawrence
1976, Mineralium Deposita (11) 71-82
Livingstonite is the principal ore mineral in the deposits of the Huitzuco District in the State of Guerrero, Mexico. The ore is found in the lower part of the Morelos Formation, which consists of a thick bed of sedimentary anhydrite containing lenses of dolomite and dolomite breccia. In the unweathered...
[Book review] American sportsmen and the origins of conservation
Richard C. Banks
1976, The Auk (93) 864-865
The relationship of this book to ornithology is so indirect that the work barely merits a review on these pages. In a rather subtle way, however, the book may have a considerable effect on at least one aspect of ornithology, that involving scientific collecting. In essence, the volume is an...
Thermal adaptiveness of plumage color in screech owls
James A. Mosher, Charles J. Henny
1976, The Auk (93) 614-619
Clinal variation in the relative proportions of red and gray plum- age phases in Screech Owls (Otus asio) was analyzed by Owen (1963) and Marshall (1967). This variation was well known prior to Owen's work, but was misinterpreted (Baird, et al. 1874, Hasbrouck 1893, Allen 1893).]Laurel VanCamp and Charles Henny...
Delta-aminolevulinic acid dehydratase: Inhibition in ducks dosed with lead shot
M. T. Finley, M. P. Dieter, L. N. Locke
1976, Environmental Research (12) 243-249
Lead concentration in blood and erythrocyte delta-aminolevulinic acid dehydratase (ALAD) activity was measured in mallard ducks dosed with one all-lead shot or one lead-iron combination shot. For 2 weeks after dosage, lead in blood of ducks given an all-lead shot was fourfold higher than in those dosed with lead-iron shot....
The source of hydrothermal solutions at Puerto Maunabo and its bearing on the base-metal-potassium feldspar association in Puerto Rico
M. H. Pease Jr.
1976, Journal of Research of the U.S. Geological Survey (4) 61-65
A quartz oligoclase porphyry exposed near Puerto Maunabo may provide evidence to further our understanding of the base-metal-potassium feldspar association known to occur in many of the porphyry-type copper deposits of Puerto Rico. The porphyry appears to be a magmatic differentiate on the border of the San Lorenzo batholith that...
Revised Miocene and Pliocene diatom biostratigraphy of Upper Newport Bay, Newport Beach, California
J.A. Barron
1976, Marine Micropaleontology (1) 27-63
North Pacific diatom zones XXIII through IX of Schrader are recognizable in the middle Miocene to lower Pliocene stratigraphic section exposed around Upper Newport Bay in Newport Beach, California. Correlation with DSDP Site 173 and other stratigraphic sections in California allows the selection of diatom datums that are the most...
Summary appraisals of the nation's ground-water resources – California region
H. E. Thomas, D. A. Phoenix
1976, Professional Paper 813-E
Most people in the California Region live in a semiarid or arid climate, with precipitation less than the potential evapotranspiration- environments of perennial water deficiency. The deficiency becomes most onerous during the characteristically rainless summers and during recurrent droughts that may continue for 10--20 years. However, water from winter rain...
Quality-of-water data, Palm Beach County, Florida, 1970-1975
Wesley L. Miller, Arthur C. Lietz
1976, Open-File Report 76-784
One of the most pressing problems of Palm Beach County, Florida, is the present and potential contamination of the surface and ground-water resources. The canals which dissect the urban and agricultural areas are convenient receptacles for storm-water runoff, sewage effluent, and agricultural wastes. Contaminants in the canals may enter the...
Thermographic mosaic of Yellowstone National Park
Richard S. Williams Jr., Philip G. Hasell Jr., Albert N. Sellman, Harry W. Smedes
1976, Photogrammetric Engineering and Remote Sensing (42) 1315-1324
An uncontrolled thermographic mosaic, which covers most of the area of Yellowstone National Park, has been compiled. The recording of aerial thermographic data on videotape is established as one of the prerequisites for the preparation of more accurate mosaics. Post-mission processing of the videotape record can rectify the nadir line...
Field recalibration of radiometers by using the shading technique
Alan P. Jackman, Richard D. Noble
1976, Journal of Research of the U.S. Geological Survey (4) 757-764
Use of radiometers to measure radiant energy components in energy budgets is widespread in water-resources studies. Previous experience has shown that readings of radiometers may contain substantial errors. These errors may be due to deterioration of the instrument during use and (or) inaccurate initial calibration. Both of these errors may...
Fracturing and subsidence of the land surface caused by the withdrawal of ground water in the Milford area, Utah
R.M. Cordova, R. W. Mower
1976, Journal of Research of the U.S. Geological Survey (4) 505-510
Fracturing and subsidence of the land surface in the Milford area of Utah have resulted from the decline of water levels due to pumping in unconsolidated deposits of Quaternary age. To the writers' knowledge, these are the first such effects of ground-water withdrawal reported in Utah. The fracturing is in an...
Determining population size of territorial red-winged blackbirds
P.H. Albers
1976, Journal of Wildlife Management (40) 761-768
Population sizes of territorial male red-winged blackbirds (Agelaius phoeniceus) were determined with counts of territorial males (area count) and a Petersen-Lincoln Index method for roadsides (roadside estimate). Weather conditions and time of day did not influence either method. Combined roadside estimates had smaller error bounds than the individual transect estimates...
The "Soil" of Mars (Viking 1)
R.W. Shorthill, H.J. Moore II, R.F. Scott, R.E. Hutton, S. Liebes Jr., G.R. Spitzer
1976, Science (194) 91-97
The location of the Viking 1 lander is most ideal for the study of soil properties because it has one footpad in soft material and one on hard material. As each soil sample was acquired, information on soil properties was obtained. Although analysis is still under way, early results on...
Geochronology of the Arabian Shield, western Saudi Arabia: K-Ar results
Robert J. Fleck, R. G. Coleman, H. R. Cornwall, W.R. Greenwood, D. G. Hadley, D. L. Schmidt, W. C. Prinz, James C. Ratte
1976, GSA Bulletin (87) 9-21
An orogenic event, correlated with the Pan-African event in eastern Africa, affected the Arabian Peninsula between 510 and 610 m.y. ago and is well-recorded geochronologically. The event probably included two thermal pulses or maxima, the first occurring between 560 and 610 m.y. ago and the second between 510 and 540...
Mississippi carbonate shelf margins, western United States
Peter R. Rose
1976, Journal of Research of the U.S. Geological Survey (4) 449-466
Regional linear carbonate shelf margins, or stratigraphic reefs, are postulated to have developed during Mississippian time along the eastern flank of the Cordilleran miogeosyncline in the Western United States. These shelf margins are analogous to well-documented ancient and modern geologic counterparts, such as the Guadalupian reef of the West Texas...
An evaluation of methods for measuring algal growth
W. Thomas Shoaf, Bruce W. Lium
1976, Journal of Research of the U.S. Geological Survey (4) 497-504
Algal growth was expressed as milligrams dry weight per litre with use of the electronic particle counter for determining cell number and cell volume. A gravimetric constant in milligrams dry weight per cubic micrometre was determined. This constant was applicable throughout the growth curve since there was a linear relationship...
Evaluation of three collecting methods for a reconnaissance of stream benthic invertebrates
K. V. Slack, J. W. Nauman, L. J. Tilley
1976, Journal of Research of the U.S. Geological Survey (4) 491-495
A 1-day reconnaissance of the Dietrich River, Alaska, included collection of benthic invertebrates. Three methods were used at each of five stations to increase sampling effectiveness and to evaluate each method. Chironomidae and Plecoptera comprised 91 percent of all individuals and 47 percent of all taxa in the combined faunal...
