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...
The February 1969 east rift eruption of Kilauea Volcano, Hawaii
Donald A. Swanson, D. B. Jackson, R. Y. Koyanagi, T. L. Wright
1976, Professional Paper 891
No abstract available....
Additional evidence of Mercurian volcanism
N.J. Trask, R.G. Strom
1976, Icarus (28) 559-563
Evidence concerned with (1) the character and distribution of terrain surrounding fresh basins, (2) albedo, color and temporal differences between a basin rim and smooth plains on its floor, and (3) the stratigraphic relations and local distribution of smooth plains in the hilly and lineated terrain are cited as additional...
Mercurian volcanism questioned
D.E. Wilhelms
1976, Icarus (28) 551-558
The Mariner 10 television team has argued that extensive plains on Mercury were formed by volcanism and compared them with the demonstrably lunar maria. I believe, however, that in stratigraphic relations, surface morphology, and albedo contrast, the Mercurian plains more closely resemble the lunar light plains. These lunar plains were...
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...
Sodium-potassium dependent adenosine triphosphatase activity in gills and kidneys of Atlantic salmon (Salmo salar)
T.H. McCartney
1976, Comparative Biochemistry and Physiology, Part A: Physiology (53) 351-353
1. Gill and kidney ATPase activities of 2-year-old Atlantic salmon (Salmo salar) were determined periodically from March to July.2. Na-K ATPase activity increased in the gill and declined in the kidney during the time encompassing transformation of parr to smolt under hatchery conditions....
Endrin toxicity and distribution in freshwater: A review
B.F. Grant
1976, Bulletin of Environmental Contamination and Toxicology (15) 283-290
No abstract available....
Wildlife diseases: philosophical considerations
M. Friend
L.A. Page, editor(s)
1976, Book chapter, Wildlife diseases
Wildlife diseases are studied because of their adverse impact on human health, agriculture, or wildlife conservation. Viewpoints from these three major areas of concern are not always compatible, yet the ecological nature of disease makes it essential that each is recognized and understood. Within wildlife agencies, resistance or apathy toward...
The Talas-Fergana Fault, Kirghiz and Kazakh, USSR
R. E. Wallace
1976, Earthquake Information Bulletin (USGS) (8) 4-13
The great Talas-Fergana fault transects the Soviet republic of Kirghiz in Soviet Central Asia and extends southeastward into China and northwestward into Kazakh SSR (figs. 1 and 2). This great rupture in the Earth's crust rivals the San Andreas fault in California; it is long (approximately 900 kilometers), complex, and...
Teton Dam flood of June 1976, Newdale quadrangle, Idaho
Herman A. Ray, Howard F. Matthai, Cecil A. Thomas
1976, Hydrologic Atlas 565
The failure of the Teton Dam caused extreme flooding along the Teton River, Henrys Fork, and Snake River in southeastern Idaho on June 5-8, 1976. No flooding occurred downstream from American Falls Reservoir. The inundated areas and maximum water-surface elevations are shown in a series of 17 hydrologic atlases. The...
Feeding algae to fish
Jon G. Stanley, Jack B. Jones
1976, Aquaculture (7) 219-223
Aquarium-held bigmouth buffalo Ictiobus cyprinellus (Valenciennes) were fed the blue-green alga Spirulina platensis (Nordstedt) at a daily rate of 29 g dry weight/kg body weight for 28 days. Daily growth was 14 g/kg body weight, and food conversion was 2.0. Tilapia aurea (Steindachner) also was fed this...
Ferruginous hawk nesting ecology and raptor populations in northern South Dakota
J. T. Lokemoen, Harold F. Duebbert
1976, Condor (78) 464-470
No abstract available....
On the foraging and prey selection of nesting Caspian Terns
Robert E. Gill Jr.
1976, California Fish and Game (62) 155-155
No abstract available....
Earthquake prediction; fact and fallacy
R.N. Hunter
1976, Earthquake Information Bulletin (USGS) (8) 24-27
Earthquake prediction is a young and growing area in the field of seismology. Only a few years ago, experts in seismology were declaring flatly that it was impossible. Now, some successes have been achieved and more are expected. Within a few years, earthquakes may be predicted as routinely as the...
The zonal distribution of selected elements above the Kalamazoo porphyry copper deposit, San Manuel district, Pinal County, Arizona
M.A. Chaffee
1976, Journal of Geochemical Exploration (5) 145-165
There may be many as-yet-undiscovered porphyry copper deposits that exist as blind deposits deep within exposed rock bodies. The Kalamazoo porphyry copper-molybdenum deposit is a blind deposit present at depths up to at least 1,000 m (about 3,200 ft) that contains zoning features common to many of the known...
Mineralogy of ash of some American coals: Variations with temperature and source
R.S. Mitchell, H.J. Gluskoter
1976, Fuel (55) 90-96
Ten samples of mineral-matter residue were obtained by the radio-frequency low-temperature ashing of subbituminous and bituminous coals. The low-temperature ash samples were then heated progressively from 400 °C to 1400 °C at 100 °C intervals. Mineral phases present at each temperature interval were determined by X-ray diffraction analyses. The minerals...
Thermodynamics of Fe(II)Fe(III) oxide systems I. Hydrothermal Fe3O4
J.J. Bartel, E.F. Westrum Jr., J.L. Haas Jr.
1976, Journal of Chemical Thermodynamics (8) 575-581
The heat capacity of a hydrothermally-prepared polycrystalline sample of Fe3O4 was measured from 53 to 350 K, primarily to study the thermophysics of the Verwey transitions. Although the bifurcation of the transition was confirmed, the sample was found to contain traces of manganese. The observed transition temperatures of 117.0 and...
Selected hydrologic data, Uinta Basin area, Utah and Colorado
J. W. Hood, J. C. Mundorff, Don Price
1976, Utah Basic-Data Release 26
The Uinta Basin area in northeastern Utah and northwestern Colorado covers an area of slightly more than 10,000 mi2 (25,900 km2). More than 95 percent of the basin is in Utah, thus most of the data in this report apply to Utah. Most of the water wells are concentrated in...
Chemical and physical data for the Flaming Gorge Reservation area, Utah and Wyoming, 1973-75
E.L. Bolke
1976, Utah Basic-Data Release 27
This report presents the basic data that were collected by the U.S. Geological Survey during a study of the chemical quality of water in Flaming Gorge Reservoir. An interpretive report will follow. The basic data were collected from the reservoir during the period August 1973 to October 1975. The reservoir...
[Book review] One Time Harvest: Reflections on Coal and our Future, by Mike Jacobs
Douglas H. Johnson
1976, North Dakota History (43) 101-102
Review of: One time harvest: reflections on coal and our future. Mike Jacobs. 1975. Indiana University. 300 p....
Atlas of Rhode Island Salt Marshes
W. L. Halvorson, W.E. Gardiner
1976, Marine Memorandum 44
No abstract available at this time...
Parasites of freshwater fishes: IV; Miscellaneous; The anchor parasite (Lernaea elegans) and related species
G. L. Hoffman
1976, Fish Disease Leaflet 46
No abstract available at this time...
Fine structure of an unidentified protozoon in the epithelium of rainbow trout exposed to water with Myxosoma cerebralis
S.B. Daniels, R. L. Herman, C.N. Burke
1976, Journal of Protozoology (23) 402-410
An intracellular protozoon was discovered in the epithelium of young rainbow trout (Salmo gairdneri) exposed for as short a time as 1 hr to water known to contain infective stages of Myxosoma cerebralis. Light- and electron-microscopic examination of this tissue revealed what appeared to be a proliferative stage (presumptive schizont) of a...
Geologic history of Cape Cod, Massachusetts
Water Resources Division, U.S. Geological Survey
1976, Report
Cape Cod, a sandy peninsula built mostly during the Ice Age, juts into the Atlantic Ocean like a crooked arm. Because of its exposed location, Cape Cod was visited by many early explorers. Although clear-cut evidence is lacking, the Vikings may have sighted this land about 1,000 years ago. It...
Hydrogen and oxygen isotope exchange reactions between clay minerals and water
J. R. O’Neil, Y.K. Kharaka
1976, Geochimica et Cosmochimica Acta (40) 241-246
The extent of hydrogen and oxygen isotope exchange between clay minerals and water has been measured in the temperature range 100–350° for bomb runs of up to almost 2 years. Hydrogen isotope exchange between water and the clays was demonstrable at...
