Origin of Franciscan melanges in Northern California
M. Clark Blake Jr., D. L. Jones
1974, SEPM Special Publication 19
In northern California, chaotic Franciscan melange occurs beneath the overlying ophiolite and Great Valley Sequence. Identical melanges occur to the west, separating well-bedded, coherent Franciscan units that differ markedly in age. Detailed studies in several places indicate that these melanges mark the boundaries of imbricate thrust sheets, and they appear...
Earthquake mechanism and displacement fields close to fault zones: Report on the Sixth GEOP Research Conference
Craig R. Allen, Jon Berger, Ivan I. Mueller, James C. Savage, J. Weertman
1974, Eos, Transactions, American Geophysical Union (55) 836-840
The Sixth Geodesy/Solid Earth and Ocean Physics (GEOP) Research Conwas held on February 4–5, 1974, at the Institute of Geophysics and Planetary Physics, University of California, San Diego, in La Jolla, California. It was attended by about 100 persons.James N. Brune, program chairman, opened the conference and delivered the introductory...
Geodetic determination of strain at the Nevada Test Site following the Handley event
James C. Savage, W. T. Kinoshita, W.H. Prescott
1974, Bulletin of the Seismological Society of America (64) 115-129
Repeated surveys of a trilateration network (aperture greater than 20 km) centered on ground zero for the HANDLEY event, a nuclear explosion at the Nevada Test Site with yield in excess of 1 megaton, suggest that the explosion induced an east-west extension of the network by more than 50 mm....
Effects of the Bear Valley and San Juan Bautista earthquakes of 1972 on Geodimeter line lengths
W.H. Prescott, James C. Savage
1974, Bulletin of the Seismological Society of America (64) 65-72
Measurements of lines of the California Geodimeter network in the vicinity of the epicenters of four 1972 earthquakes (magnitudes 4.7, 4.7, 4.8, and 5.1) along the San Andreas fault system indicate that no significant anomalous changes in line length preceded or accompanied those earthquakes. Within the precision of measurement, the...
Tilt precursors before earthquakes on the San Andreas fault, California
M.J.S. Johnston, C.E. Mortensen
1974, Science (186) 1031-1034
An array of 14 biaxial shallow-borehole tiltmeters (at 10-7 radian sensitivity) has been installed along 85 kilometers of the San Andreas fault during the past year. Earthquake-related changes in tilt have been simultaneously observed on up to four independent instruments. At earthquake distances greater than 10 earthquake source dimensions, there...
Nature of the boulder batholith of Montana: Discussion
M. R. Klepper, G. D. Robinson, H.W. Smedes
1974, GSA Bulletin (85) 1953-1958
No abstract available. ...
Geophysical observations on northern part of Georges Bank and adjacent basins of Gulf of Maine
R. N. Oldale, J.C. Hathaway, William P. Dillon, J. D. Hendricks, James M. Robb
1974, AAPG Bulletin (58) 2411-2427
Continuous-seismic-reflection and magnetic-intensity profiles provide data for inferences about the geology of the northern part of Georges Bank and the basins of the Gulf of Maine adjacent to the bank.Basement is inferred to be mostly sedimentary and volcanic rocks of Paleozoic age that were metamorphosed and intruded locally by felsic...
Offset plutons and history of movement along the McKinley segment of the Denali Fault system, Alaska
Bruce L. Reed, Marvin A. Lanphere
1974, GSA Bulletin (85) 1883-1892
The Foraker and McGonagall plutons, bodies of granodiorite with nearly identical mineralogy and chemistry, are considered to be parts of a single igneous mass that has undergone right-lateral displacement of about 38 km along the McKinley segment of the Denali fault system since the igneous mass crystallized about 38 m.y....
Springs of Pennsylvania
Herbert N. Flippo Jr.
1974, Water Resources Bulletin 10
No abstract available....
An approximation of sediment yields from watersheds in Minnesota
C. R. Collier
1974, Conference Paper, Winter Meeting, Chicago, Illinois, December 10-13, 1974, Proceedings
No abstract available....
Leachate plumes in a highly permeable aquifer
Grant E. Kimmel, Olin C. Braids
1974, Groundwater (12) 388-392
Two landfills, 27 and 41 years old, were studied and found to have plumes of leachate-contaminated ground water extending 10,600 and 5,000 ft (3,200 and 1,500 m), respectively, from the site of deposition in the upper glacial aquifer on Long Island, New York. The plumes sink to the bottom of...
Spectrofluorimetric procedure using 2,3-napthalenediamine for determining selenium in rocks
Marian M. Schnepfe
1974, Journal of Research of the U.S. Geological Survey (2) 631-636
A spectrofluorimetric procedure using 2,3-naphthalenediamine is given for determining submicrogram and microgram quantities of selenium in mineralized rocks. Conditions for the satisfactory isolation and concentration of the selenium are investigated and tested on six USGS standard rocks of various types. Selenium contents of samples treated by an alkaline sinter and...
Molluscan phylogeny: The paleontological viewpoint
B. Runnegar, J. Pojeta Jr.
1974, Science (186) 311-317
Stasek theorized that the extant mollusks are the progeny of three separate lineages that separated before the phylum was well established. He wrote that no known intermediate forms, fossil or living, bridge the "enormous gaps between any two of the three lineages," and therefore treated each as a separate subphylum....
Improved nasal-saddle marker for mallards
Harold A. Doty, R. J. Greenwood
1974, Journal of Wildlife Management (38) 938-939
Abstract not available. ...
Radioactive waste storage in the arid zone
Isaac J. Winograd
1974, Eos Science News (55) 884-894
By the turn of the century, nuclear power may generate more than one-half of the electric energy, and about one-third of the total energy consumed in the United States [Thompson, 1971; Chapman et al., 1972]. By 2020, the total quantity of high-level radioactive wastes (HLW) generated as a byproduct of nuclear...
A respirometer with controllable oxygen levels
Dewey L. Tackett, J.J. Giudice, R.W. Raible
1974, Transactions of the American Fisheries Society (103) 825-828
Construction details and operation of a respirometer with capabilities for controlling the oxygen level at preselected levels is described. The interaction of an oxygen sensor and electronic switch energizes an electrolysis cell which replenishes oxygen used by a test organism. Respiration rate of any aquatic or semiaquatic organism may be...
Trichomoniasis in the Hawaiian barred dove
R. M. Kocan, W. Banko
1974, Journal of Wildlife Diseases (10) 359-360
Two barred doves found in the south Kona district of the island of Hawaii were diagnosed as having trichomoniasis on the basis of gross and microscopic lesions. This brings the confirmed list of columbid species susceptible to natural trichomoniasis to four and is the first report of the disease...
Case report: Peregrine falcon suspected of pesticide poisoning
W. L. Reichel, L. N. Locke, R. M. Prouty
1974, Avian Diseases (18) 487-489
No abstract available....
Sea otters: Their role in structuring nearshore communities
J. A. Estes, J. F. Palmisano
1974, Science (185) 1058-1060
A comparison of western Aleutian Islands with and without sea otter populations shows that this species is important in determining littoral and sublittoral community structure. Sea otters control herbivorous invertebrate populations. Removal of sea otters causes increased herbivory and ultimately results in the destruction of macrophyte associations. The observations suggest...
The 1973 distribution and abundance of breeding ospreys in the Chesapeake Bay
Charles J. Henny, Morton M. Smith, Vernon D. Stotts
1974, Chesapeake Science (15) 125-133
An aerial survey in association with several intensive ground surveys yielded the first estimate of the size of the osprey (Pandion haliaetus carolinensis) nesting population in Chesapeake Bay. The 1973 population was estimated at 1,450 ± 30 pairs, of which 713 were on the western shore and 737 on the...
Chert derived from magadiite in a lacustrine deposit near Rome, Malheur County, Oregon
Richard A. Sheppard, Arthur J. 3rd Gude 3rd
1974, Journal of Research of the U.S. Geological Survey (2) 625-630
Nodules and thin beds of chert occur in the upper part of the informally named Rome beds, about 8 11 km southwest of Rome, Oreg. The chert is in green to gray mudstone, about 8 m beneath a conspicuous gray and yellow zeolitic tuff. The bedded chert contains molds of...
Interpretation of Chesapeake Bay aeromagnetic anomalies: Reply
Michael W. Higgins, Isadore Zietz, George Wescott Fisher
1974, Geology (2) 450
No abstract available....
New evidence on the age of the top of the Madison Limestone (Mississippian), Bighorn Mountains, Wyoming and Montana
William Jasper Sando, Bernard L. Mamet
1974, Journal of Research of the U.S. Geological Survey (2) 619-624
The youngest strata recognized in the Madison Limestone arc dated by foraminifers and corals at two localities on the west flank of the Bighorn Mountains in Wyoming and Montana. Fossils collected in situ from the Madison at Shell Canyon represent Zone 12 of Mamet and Skipp of late Salem age...
Correlation of uppermost Precambrian and lower Cambrian strata from southern to east-central Nevada
John H. Stewart
1974, Journal of Research of the U.S. Geological Survey (2) 609-618
Study of exposed uppermost Precambrian and Lower Cambrian strata in southern and east-central Nevada and intervening areas indicates that the Johnnie Formation of southern Nevada and the McCoy Creek Group (restricted) are correlative. In detail, the uppermost units of both sequences, the Rainstorm Member of the Johnnie Formation and the...
Stratigraphy, structure, and geologic history of the Lunar Lake Caldera of northern Nye County, Nevada
E. B. Ekren, W. D. Quinlivan, R.P. Snyder, F. J. Kleinhampl
1974, Journal of Research of the U.S. Geological Survey (2) 599-608
The Lunar Lake caldera is in northern Nye County, Nev., about 70 mi (110 km) east-northeast of Tonopah. It is the youngest caldera in the central Nevada multiple-caldron complex and the source of the tuff of Lunar Cuesta, a multiple-flow simple cooling unit of quarts latitic welded tuff that is...
