A probe for sampling interstitial waters of stream sediments and bog soils
G.A. Nowlan, C. Carollo
1974, Journal of Geochemical Exploration (3) 199-205
A probe for sampling interstitial waters of stream sediments and bog soils is described. Samples can be obtained within a stratigraphic interval of 2–3 cm, to a depth of 60–80 cm, and with little or no contamination of the samples by sediment or...
40Ar/39Ar age spectra of some undisturbed terrestrial samples
G. Brent Dalrymple, M. A. Lanphere
1974, Geochimica et Cosmochimica Acta (38) 715-738
40Ar/39Ar age spectra and 40Ar/36Ar vs 39Ar/36Ar isochrons were determined by incremental heating for 11 terrestrial rocks and minerals whose geology indicates that they represent essentially undisturbed systems. The samples include muscovite, biotite, hornblende, sanidine, plagioclase, dacite, diabase and basalt and range in age from...
Reference samples for the earth sciences
F.J. Flanagan
1974, Geochimica et Cosmochimica Acta (38) 1731-1744
A revised list of reference samples of interest to geoscientists has been extended to include samples for the agronomist, the archaeologist and the environmentalist. In addition to the source from which standard samples may be obtained, references or pertinent notes for some samples are included.The number of rock reference samples...
Erosion by catastrophic floods on Mars and Earth
V.R. Baker, D.J. Milton
1974, Icarus (23) 27-41
The large Martian channels, especially Kasei, Ares, Tiu, Simud, and Mangala Valles, show morphologic features strikingly similar to those of the Channeled Scabland of eastern Washington, produced by the catastrophic breakout floods of Pleistocene Lake Missoula. Features in the overall pattern include the...
Heat flow from eastern Panama and northwestern Colombia
J.H. Sass, R. J. Munroe, T. H. Moses Jr.
1974, Earth and Planetary Science Letters (21) 134-142
Heat flows were determined at 12 sites in four distinct areas between longitude 77° and 80°W in eastern Panama and northwestern Colombia. Evidently, most of the region is underlain by mafic oceanic crust so that the crustal radiogenic component of heat...
Lunar crater depths from orbiter IV long-focus photographs
D.W.G. Arthur
1974, Icarus (23) 116-133
The paper presents method and results for the determination of the depths of more than 1900 small lunar craters from measures of shadows on the long-focus pictures obtained by Lunar Orbiter IV. The method for converting the measured shadow length into the true...
Oxygen isotope activities and concentrations in aqueous salt solutions at elevated temperatures: Consequences for isotope geochemistry
A.H. Truesdell
1974, Earth and Planetary Science Letters (23) 387-396
Studies of the effect of dissolved salts on the oxygen isotope activity ratio of water have been extended to 275°C. Dehydrated salts were added to water of known isotope composition and the solutions were equilibrated with CO2 which was sampled for analysis. For...
The scavenging of silver by manganese and iron oxides in stream sediments collected from two drainage areas of Colorado
T. T. Chao, B.J. Anderson
1974, Chemical Geology (14) 159-166
Stream sediments of two well-weathered and aerated drainage areas of Colorado containing anomalous amounts of silver were allowed to react by shaking with nitric acid of different concentrations (1–10M). Silver, manganese, and iron simultaneously dissolved were determined by atomic absorption. The relationship...
The United States Geological Survey
Water Resources Division, U.S. Geological Survey
1974, Report
Some helminth parasites of the American bald eagle
A.A. Kocan, L. N. Locke
1974, Journal of Wildlife Diseases (10) 8-10
Bald eagles (Haliaeetus leucocephalus) found dead or moribund in the United States and Canada and submitted to Patuxent Wildlife Research Center were examined for helminth parasites. Nine genera of helminths were reported which include new host records for Clinostomum complanatum, Neogogatea pandionis, Centrorhynchus sp., Serratospiculum amaculata, Capillaria contorta, and Habronema americanum....
Landslides
Water Resources Division, U.S. Geological Survey
1974, Report
Teleseismic studies indicate existence of deep magma chamber below Yellowstone National Park
H. M. Iyer
1974, Earthquake Information Bulletin (USGS) (6) 3-7
The secrets of Yellowstone National Park's spectacular geysers and other hot water and steam phenomena are being explored by the U.S Geological Survey with the aid of distant earthquakes (teleseisms). For some time geologists have known that the remarkable array of steam and hot water displays, for which the park...
Effect of acclimation temperature and heat shock on vulnerability of fry of lake whitefish (Coregonus clupeaformis) to predation
Thomas G. Yocom, Thomas A. Edsall
1974, Journal of the Fisheries Research Board of Canada (31) 1503-1506
Fry of lake whitefish (Coregonus clupeaformis) acclimated to 10, 15, and 18 C were exposed to temperatures of 24.5, 25, and 28 C for 1 min and then immediately returned to water at their acclimation temperature, in test tanks containing yearling yellow perch (Perca flavescens). The number of attacks on the fry and...
An elutriation apparatus for macroinvertebrates
Joseph M. Worswick Jr., Michael T. Barbour
1974, Limnology and Oceanography (19) 538-540
An inexpensive hydropneumatic apparatus screens macroinvertebrates from bottom samples containing silt, mud, or clay. The elutriator, an acrylic cylinder with screened windows, cemented on an upright plastic funnel, retains benthic fauna while the sediment is washed away. The apparatus yields clean samples and has reduced the time required to sort...
Upland nesting. Creating a sea of grass
Harold F. Duebbert
1974, Ducks Unlimited (38) 20, 22-23, 33
Abstract has not been submitted...
Habitat management considerations for prairie chickens
L.M. Kirsch
1974, Wildlife Society Bulletin (2) 124-129
Lack of nesting and brood rearing habitat appears to be the universal limiting factor for prairie chickens (Tympanuchus cupido pinnatus) throughout their range. Grasslands are essential to prairie chickens, but vary widely in quality and thus in their ability to support prairie chickens. High-quality habitat is grassland providing residual vegetation...
Nematode parasites of waterfowl (Anseriformes) from western United States
M.E. McDonald
1974, Wildlife Disease 19-19
Thirty-four species of nematodes were found in 415 Anseriformes (Anatidae) of 27 species; 93.7% of birds over 4 weeks old were infected. Data on prevalence, host specificity, age of host, and geographic distribution are given. Infections were more intense in sick birds and birds in poor physical condition. Accidental or...
Gas-liquid chromatographic determination of 3-trifluoromethyl-4-nitrophenol residues in fish
J. L. Allen, J.B. Sills
1974, Journal of the Association of Official Analytical Chemists (57) 387-388
A procedure for the determination of 3-trifluormethyl-4-nitrophenol (TFM) in fish tissues is described. Homogenized tissues are extracted with hexane-ethyl ether; the extract is cleaned up by partitioning the TFM from the extracting solvent into 0.1N NaOH, acidifying the aqueous solution, and partitioning again with hexaneethyl ether. The TFM is methylated with...
Social behavior of breeding gadwalls in North Dakota
T.J. Dwyer
1974, The Auk (91) 375-386
Responses of duck pairs encountering other ducks were categorized by McKinney (1965a) as displays, attack, escape and avoidance, sexual pursuit, and sociability. Gadwalls (Anas strepera) show all these responses on the breeding grounds, and characteristic behavior patterns occur depending on the reproductive state of the birds involved. The responses of...
Feeding ecology of pintail hens during reproduction
Gary L. Krapu
1974, The Auk (91) 278-290
Food supply has been acknowledged as one of eight major external factors regulating the sexual cycles of birds (Marshall 1961). Several hypotheses have been advanced to explain the role of food supply as an ultimate factor regulating breeding (Marshall 1951; Lack 1954, 1968; Wynne-Edwards 1962; and others). Another potential influence...
Residues of DDT in lake trout (Salvelinus namaycush) and coho salmon (Oncorhynchus kisutch) from the Great Lakes
Robert E. Reinert, Harold L. Bergman
1974, Journal of the Fisheries Research Board of Canada (31) 191-199
Concentrations of DDT residues were higher in lake trout (Salvelinus namaycush) from southern Lake Michigan in 1966–70 (average 18.1 ppm in fish 558–684 mm long) than in lake trout of the same size-class from Lake Superior in 1968–69 (4.4 ppm), and higher in adult coho salmon (Oncorhynchus kisutch) from Lake Michigan in 1968–71...
Immature insects (Plecoptera, Trichoptera, and Ephemeroptera) collected from deep water in western Lake Superior
James H. Selgeby
1974, Journal of the Fisheries Research Board of Canada (31) 109-111
Five species of aquatic insects - two plecopterans, two trichopterans, and one ephemeropteran - usually found in streams or ponds were collected in water 32-100 m deep in western Lake Superior. All appear to be new records for the lake and all were collected from far greater depths than previously...
Dieldrin and DDT: accumulation from water and food by lake trout (Salvelinus namaycush) in the laboratory
Robert E. Reinert, Linda J. Stone, Harold L. Bergman
1974, Proceedings of the Conference on Great Lakes Research (17) 52-58
In the laboratory we measured the amounts of dieldrin and p,p'DDT accumulated by fish from contaminated water and food to determine how fish from Lake Michigan accumulate high concentrations of these insecticides from an environment where the concentrations in water are generally less than 0.01 ppb. Eight groups of yearling...
Residues of 2,4-D in pond water, mud, and fish, 1971
D.P. Schultz, P.D. Harman
1974, Pesticides Monitoring Journal (8) 173-179
Abstract has not been submitted...
An improved chemical delivery apparatus for use in intermittent-flow bioassays
J. H. Chandler Jr., H.O. Sanders, D. F. Walsh
1974, Bulletin of Environmental Contamination and Toxicology (12) 123-128
No abstract available....
