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Page 5516, results 137876 - 137900

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Textural and structural evidence for a predeformation hydrothermal origin of the Tungsten Queen Deposit, Hamme District, North Carolina
M. P. Foose, J. F. Slack, T. Casadevall
1980, Economic Geology (75) 515-522
The Hamme tungsten district is composed of a series of steeply dipping quartz-wolframite veins in the Piedmont of North Carolina. Veins are concentrated near the border of the lower Paleozoic Vance County pluton, along its western contact with green-schist-facies metapelites and metavolcanic rocks of the Carolina slate belt. One of...
Pliocene intrusive rocks and mineralization near Rico, Colorado
C. W. Naeser, C. G. Cunningham, R. F. Marvin, J. D. Obradovich
1980, Economic Geology (75) 122-133
Fission-track and potassium-argon studies of intrusive rocks in the vicinity of Rico, Colorado, have shown that there are at least two periods of igneous activity and that significant ore mineralization is associated with alaskites and latites that are 3 to 5 m.y. old. Discordant fission track ages of apatite and...
Chemical quality of water in abandoned zinc mines in northeastern Oklahoma and southeastern Kansas
Stephen J. Playton, Robert E. Davis, Roger G. McClaflin
1980, Circular 82
Onsite measurements of pH, specific conductance, and water temperature show that water in seven mine shafts in northeastern Oklahoma and southeastern Kansas is stratified. With increasing sampling depth, specific conductance and water temperature tend to increase, and pH tends to decrease. Concentrations of dissolved solids and chemical constituents in mine-shaft...
Paleoecological evaluation of Late Eocene biostratigraphic zonations of the Pacific Coast of North America
Kristin McDougall
1980, Paleontological Monograph (2) 1-75
The late Eocene zonal criteria of the west coast of North America are to a large extent controlled by paleoecology and, therefore, the correlation of coeval but environmentally different benthic foraminiferal faunas cannot be achieved before paleoecological control of the biostratigraphy is understood. The faunal trends, morphology, characteristic occurrences and...
Seepage study of the West Side and West Canals, Box Elder County, Utah
R.W. Cruff
1980, Technical Publication 67
A study of the gains or losses of the West Side and West Canals from Cutler Reservoir to near Penrose, Box Elder County, Utah, was made to aid in water allocation for the canal system. Four sets of seepage measurements made in 1978 were used in the analysis. Adjustments for...
Hydrogeologic data for the lower Connecticut River basin, Connecticut
J.W. Bingham, F.D. Paine, L.A. Weiss
1980, Connecticut Water Resources Bulletin 32
This report contains geologic, ground-water, and miscellaneous data on the quality of surface water collected for a water-resources inventory of the lower Connecticut River basin, Connecticut. The study was made by the U.S. Geological Survey in fiscal cooperation with the Connecticut Department of Environmental Protection. A companion report (Connecticut Water...
EROS: A space program for Earth resources
G.G. Metz, P.J. Wiepking
1980, Report
Within the technology of the space age lies a key to increased knowledge about the resources and environment of the Earth. This key is remote sensing detecting the nature of an object without actually touching it. Although the photographic camera is the most familiar remote-sensing device, other instrument systems, such...
Inhibition of nitrite-induced toxicity in channel catfish by calcium chloride and sodium chloride
Wright M. I. Tommasso J.R. M. I., B.A. Simco, K. B. Davis
1980, Progressive Fish-Culturist (42) 144-146
Environmental chloride has been shown to inhibit methemoglobin formation in fish, thereby offering a protective effect against nitrite toxicity. Channel catfish (Ictalurus punctatus) were simultaneously exposed to various environmental nitrite and chloride levels (as either CaCl2 or NaCl) in dechlorinated tap water (40 mg/L total hardness, 47 mg/L alkalinity, 4...
Elevations and Distances in the United States
Water Resources Division, U.S. Geological Survey
1980, Report
The information in this booklet was compiled to answer inquiries received by the Geological Survey from students, teachers, writers, editors, publishers of encyclopedias, almanacs and other reference books, and people in many other fields of work. The elevations of features and distances between points in the United States were determined...
The susceptibility of the mallard duck (Anas platyrhynchos) to Clostridium botulinum C2 toxin
Wayne I. Jensen, Ruth M. Duncan
1980, Japanese Journal of Medical Science and Biology (33) 81-86
Most strains of Clostridium botulinum type C, after having lost their capacity to produce their dominant toxin (C1) as a result of being“cured”of their prophages, continue to produce C2, a trypsin-activable toxin reported by other investigators. While of relatively low toxicity when administered perorally to the adult mallard duck (Anas platyrhynchos), it...
Effects of environmental pH and calcium on ammonia toxicity in channel catfish
J.R. Tomasso, C. A. Goudie, B.A. Simco, K. B. Davis
1980, Transactions of the American Fisheries Society (109) 229-234
The twenty-four-hour median lethal concentrations (24-hour LC50) of total ammonia nitrogen (TA-N) to channel catfish (Ictalurus punctatus) at pH 7, 8, and 9 (total hardness, 40 mg/liter; temperature, 21–25 C) were 263.6 ± 11.3 (SE), 38.8 ± 1.8, and 4.5 ± 0.2 mg/liter, respectively. The 24-hour LC50 of un-ionized ammonia...
United States Geological Survey Yearbook, fiscal year 1979
Water Resources Division, U.S. Geological Survey
1980, Report
In March 1979, the U.S. Geological Survey celebrated its 100th year of service to the Nation and 10 decades of stewardship of the land and its resources. During this year, as in the previous 99, the Survey discharged its national trust by collecting, analyzing, and disseminating earth science information and...
Water resources thesaurus: A vocabulary for indexing and retrieving the literature of water resources research and development
Water Resources Division, U.S. Geological Survey
1980, Report
This Water Resources Thesaurus encompasses such broad research areas as the hydrologic cycle, supply of and demand for water, conservation and best use of available supplies of water, methods of increasing supplies, and the economic, legal, social, engineering, recreational, biological, geographical, ecological, and qualitative aspects of water resources. This volume...
Is nothing sacred?
G. L. Hoffman
1980, Fish Health Section Newsletter (8) 3-3
N-sodium-N-chloro-rho-toluenesulfonamide (chloramine-T) effectively controls bacterial gill disease (BGD) in cultured fishes, BGD, a common disease of hatchery-reared salmonids, causes more fish losses than any other disease among these species, This study describes a liquid chromatographic (LC) method that is capable of direct, simultaneous analysis of chloramine-T and its primary degradation...