Earthquake history of Oregon
C. A. von Hake
1976, Earthquake Information Bulletin (USGS) (8) 30-33
Although situated between two States (California and Washington) that have has many violent earthquakes, Oregon is noticeably less active seismically. the greatest damage experienced resulted from a major shock near Olympia, Wash., in 1949. During the short history record available (since 1841), 34 earthquakes of intensity V, Modified Mercalli Scale,...
Earthquake history of Rhode Island
C. A. von Hake
1976, Earthquake Information Bulletin (USGS) (8) 31-32
Only three shocks (intensity V or greater, Modified Moercalli Scale) have centered in Rhode Island, although several earthquakes in New England and the St.Lawerence Valley have been felt in the State....
Earthquake history of Oklahoma
C. A. von Hake
1976, Earthquake Information Bulletin (USGS) (8) 28-30
The strongest and most widely felt earthquake in Oklahoma occurred on April 9, 1952. The intensity VII (Modified Mercalli Scale) tremor was felt over 362,000 sqaure kilometres. A second intensity VII earthquake, felt over a very small area, occurred in October 1956. In addition, 15 other shocks, intensity V or...
Seismicity and faulting attributable to fluid extraction
R. F. Yerkes, R. O. Castle
1976, Engineering Geology (10) 151-167
The association between fluid injection and seismicity has been well documented and widely publicized. Less well known, but probably equally widespread are faulting and shallow seismicity attributable solely to fluid extraction, particularly in association with petroleum production. Two unequivocable examples of seismicity and faulting associated with fluid extraction in the...
Exchange of Na+ and K+ between water vapor and feldspar phases at high temperature and low vapor pressure
R.O. Fournier
1976, Geochimica et Cosmochimica Acta (40) 1553-1561
In order to determine whether gas (steam) containing a small amount of dissolved alkali chloride is effective in promoting base exchange of Na+ and K+ among alkali feldspars and coexisting brine or brine plus solid salt, experiments were carried out at 400–700°C and steam densities ranging down to less than 0.05. For...
Intrinsic germanium detector used in borehole sonde for uranium exploration
F. E. Senftle, R.M. Moxham, A.B. Tanner, G. R. Boynton, P. W. Philbin, J.A. Baicker
1976, Nuclear Instruments and Methods (138) 371-380
A borehole sonde (~1.7 m long; 7.3 cm diameter) using a 200 mm2 planar intrinsic germanium detector, mounted in a cryostat cooled by removable canisters of frozen propane, has been constructed and tested. The sonde is especially useful in measuring X- and low-energy gamma-ray spectra (40–400 keV). Laboratory tests in...
Automation in photogrammetry: Recent developments and applications (1972-1976)
M.M. Thompson, E.M. Mikhail
1976, Photogrammetria (32) 111-145
An overview of recent developments in the automation of photogrammetry in various countries is presented. Conclusions regarding automated photogrammetry reached at the 1972 Congress in Ottawa are reviewed first as a background for examining the developments of 1972-1976. Applications are described for each country reporting significant developments. Among fifteen conclusions...
Late Pleistocene and Holocene depositional trends, processes, and history of Astoria deep-sea fan, Northeast Pacific
H. Nelson
1976, Marine Geology (20) 129-173
The asymmetrical Astoria Fan (110 × 180 km) developed off the Columbia River and Astoria submarine canyon during the Pleistocene. Morphology, stratigraphy, and lithology have been outlined for a Pleistocene turbidite, and a Holocene hemipelagic sedimentary regime to generate geologically significant criteria for comparison with ancient equivalent deposits. Both gray...
Morphologic interpretation of fertile structures in glossopterid gymnosperms
J.M. Schopf
1976, Review of Palaeobotany and Palynology (21) 25-64
The problem of determining affinity among glossopterid gymnosperms is beset by deficiencies in preservation, natural dissociation of parts, and scarcity of features assuredly critical for morphologic comprarison. The glossopterids probably are not a very heterogeneous group of plants, but this is difficult to prove. The Gondwana glacial "hiatus" has resulted...
Constant potential pulse polarography
J. H. Christie, Larry L. Jackson, R. A. Osteryoung
1976, Analytical Chemistry (48) 561-564
The new technique of constant potential pulse polarography, In which all pulses are to be the same potential, is presented theoretically and evaluated experimentally. The response obtained is in the form of a faradaic current wave superimposed on a constant capacitative component. Results obtained with a computer-controlled system exhibit a...
Earthquake history of South Carolina
C. A. von Hake
1976, Earthquake Information Bulletin (USGS) (8) 34-38
An estimated $23 million damage was caused by one of the great earthquakes in United States history in 1886. Charleston, S.C, and nearby cities suffered most of the damage, although points as far as 160 km away were strongly shaken. Many of the 20 earthquakes of intensity V or greater...
Sequential bidding models--a decision theoretic approach
Emil D. Attanasi, S.R. Johnson
1975, Industrial Organization Review (3) 49-55
No abstract available....
A model for earthquakes near Palisades Reservoir, southeast Idaho
David Schleicher
1975, Journal of Research of the U.S. Geological Survey (3) 393-400
The Palisades Reservoir seems to be triggering earthquakes: epicenters are concentrated near the reservoir, and quakes are concentrated in spring, when the reservoir level is highest or is rising most rapidly, and in fall, when the level is lowest. Both spring and fall quakes appear to be triggered by minor...
Possible extension of mineral belts, northern part of Coeur d'Alene district, Idaho
Garland B. Gott, Joseph M. Botbol
1975, Journal of Research of the U.S. Geological Survey (3) 1-7
The ore deposits in the northern part of the Coeur d'Alene district are located within rocks of the Belt Supergroup that have been intruded by Cretaceous quartz monzonites. Lead-zinc-silver replacement veins constitute most of the deposits. The geometry of the district has been modified by post-ore faulting along the Osburn,...
A digital-computer model for estimating hydrologic changes in the aquifer system in Dane County, Wisconsin
R.S. McLeod
1975, Information Circular 30
The extensive use of ground water for water supply within Dane County has resulted in the need for an appraisal of the area's ground-water resources. Water-resources planners and other water-oriented groups have expressed concern over ground-water level declines and reductions in streamflow that are occurring as a result of heavy...
Land use information and air quality planning
Wallace E. Reed, John E. Lewis
1975, Final Report Volume 7
The pilot national land use information system developed by the U.S. Geological Survey in the Central Atlantic Regional Ecological Test Site project has provided an improved technique for estimating emissions, diffusion, and impact patterns of sulfur dioxide (SO2) and particulate matter. Implementation of plans to control air quality requires land...
Analysis of the rate of wildcat drilling and deposit discovery
L.J. Drew
1975, Journal of the International Association for Mathematical Geology (7) 395-414
The rate at which petroleum deposits were discovered during a 16-yr period (1957–72) was examined in relation to changes in a suite of economic and physical variables. The study area encompasses 11,000 mi2 and is located on the eastern flank of the Powder River Basin. A two-stage...
A major geothermal anomaly in the Gulf of California
L.A. Lawver, D.L. Williams, R. P. Von Herzen
1975, Nature (257) 23-28
We have mapped a 3-km wide, high heat flow anomaly with a maximum value of 30 μcalorie cm −2 s−1 within a zone of seafloor extension in the central Gulf of California. From seismic reflection data and thermal modelling we suggest that the anomaly is caused by a 1-km wide...
U-Th-Pb systematics of selected samples from Apollo 17, Boulder 1, Station 2
P.D. Nunes, M. Tatsumoto
1975, The Moon (14) 463-471
Nine U-Th-Pb whole-rock analyses of selected brecciated materials from sample 72215 and one analysis of a pigeonite basalt clast from 72275 are presented. Both samples are from Boulder 1, Apollo 17. These data supplement previous Boulder 1 U-Th-Pb analyses of samples 72275 and 72255. U and Th concentrations indicate that...
Recent sedimentary history of Lake Monona, Wisconsin
Gilbert C. Bortleson, G.F. Lee
1975, Water, Air, & Soil Pollution (4) 89-98
Chemical analyses from two short cores in Lake Monona show that pronounced changes in chemical stratigraphy have occurred since white man moved into Madison and southern Wisconsin and began modifying the area. Since the mid to late 1800's, there has been an appreciable increase in P,...
Two models for earthquake forerunners
V.I. Mjachkin, W.F. Brace, G.A. Sobolev, James H. Dieterich
1975, Pure and Applied Geophysics PAGEOPH (113) 169-181
Similar precursory phenomena have been observed before earthquakes in the United States, the Soviet Union, Japan, and China. Two quite different physical models are used to explain these phenomena. According to a model developed by US seismologists, the so-called dilatancy diffusion model,...
The nature of surface tilt along 85 km of the San Andreas fault-preliminary results form a 14-instrument array
C.E. Mortensen, M.J.S. Johnston
1975, Pure and Applied Geophysics PAGEOPH (113) 237-249
The continuous monitoring of surface deformation near active faults is clearly necessary for an understanding of elastic strain accumulation and elastic and anelastic strain release associated with earthquakes. Fourteen 2-component tiltmeters have been installed in shallow boreholes along 85 km of the currently most active section...
Lead isotope relations in oceanic Ridge basalts from the Juan de Fuca-Gorda Ridge area N.E. Pacific Ocean
S. E. Church, M. Tatsumoto
1975, Contributions to Mineralogy and Petrology (53) 253-279
Lead isotopic analyses of a suite of basaltic rocks from the Juan de Fuca-Gorda Ridge and nearby seamounts confirm an isotopically heterogeneous mantle known since 1966. The process of mixing during partial melting of a heterogeneous mantle necessarily produces linear data arrays that can be interpreted...
Linkage effects between deposit discovery and postdiscovery exploratory drilling
Lawrence J. Drew
1975, Journal of Research of the U.S. Geological Survey (3) 169-179
For the 1950-71 period of petroleum exploration in the Powder River Basin, northeastern Wyoming and southeastern Montana, three specific topics were investigated. First, the wildcat wells drilled during the ambient phases of exploration are estimated to have discovered 2.80 times as much petroleum per well as the wildcat wells drilled...
Preliminary results of a gravity survey of the Henrys Lake quadrangle, Idaho and Montana
Donald L. Peterson, Irving J. Witkind
1975, Journal of Research of the U.S. Geological Survey (3) 228
A gravity survey of the Henrys Lake quadrangle shows that a gravity low with about 10 milligals of closure coincides with the Henrys Lake basin. The low is interpreted to reflect a basin fill of 1,100 m or more of Cenozoic sediments and volcanic rock. The data indicate that on...
