Nesting of the upland plover on the Missouri Coteau
Kenneth F. Higgins, Harold F. Duebbert, Robert B. Oetting
1969, Prairie Naturalist (1) 45-48
Abstract has not been submitted...
Safety operation and maintenance of the hurricane aircat boat with particular reference to night capture of birds
Lewis M. Cowardin
1969, Report
Rapid method for filtration of marsh waters
V. A. Adomaitis, John A. Shoesmith
1969, Prairie Naturalist (1) 31
No abstract available....
Pacific salmon
George Y. Harry
Frank E. Firth, editor(s)
1969, Book chapter, The encyclopedia of marine resources
No abstract available....
U.S. Geological Survey standards-II. First compilation of data for the new U.S.G.S. rocks
F.J. Flanagan
1969, Geochimica et Cosmochimica Acta (33) 81-120
Rock analyses, determinations of major and minor constituents, and determinations of 57 trace elements reported by analysts throughout the world are presented for the new series of U.S. Geological Survey rock samples. Averages for both the constituents generally reported in a rock analysis...
Preliminary determinations of hydrobiological and chemical conditions in the vicinity of the proposed jetport and other airports in south Florida: Progress report
Benjamin F. McPherson
1969, Open-File Report 69-162
No abstract available....
Oxygen isotope partition function ratio of water and the structure of liquid water
J. R. O'Neil, Lanford H. Adami
1969, Journal of Physical Chemistry (73) 1553-1558
No abstract available....
The relationship of the rare-earth composition of minerals to geological environment
M. Fleischer, Zalman Samuel Altschuler
1969, Geochimica et Cosmochimica Acta (33) 725-732
It has been known for a long time that the composition of the lanthanides in minerals is controlled to a large degree by crystallo-chemical factors, but is also greatly influenced by changes in geological environment. In general, igneous rocks rich in silica are favourable for the concentration of the heavy...
Pyrolysis of humic and fulvic acids
Robert L. Wershaw, G.E. Bohner Jr.
1969, Geochimica et Cosmochimica Acta (33) 757-762
Pyrolysis of humic and fulvic acids isolated from a North Carolina soil yields a variety of aromatic, heterocyclic and straight chain organ compounds. The pyrolysis products identified by gas chromatography and mass spectrometry indicate that humic and fulvic acids have aromatic and polysaccharide...
Melting relations in the Fe-rich portion of the system FeFeS at 30 kb pressure
R. Brett, P.M. Bell
1969, Earth and Planetary Science Letters (6) 479-482
The melting relations of FeFeS mixtures covering the composition range from Fe to Fe67S33 have been determined at 30 kb pressure. The phase relations are similar to those at low pressure. The eutectic has a composition of Fe72.9S27.1 and a temperature of 990°C. Solubility...
Lead isotopes in volcanic rocks and possible ocean-floor thrusting beneath island arcs
M. Tatsumoto
1969, Earth and Planetary Science Letters (6) 369-376
The isotopic composition of lead in the Japanese primary basalts gradually decreases in radiogenic character in a transverse from the Pacific Ocean side to the Japan Sea side, whereas the observed 238U204Pb">238U204Pb and 232Th204Pb">232Th204Pb ratios...
Beach lamination: Nature and origin
H. Edward Clifton
1969, Marine Geology (7) 553-559
A distinctive two-fold sedimentation unit characterizes lamination in the upper swash zone of beaches. Within the unit a fine and/or a heavy mineral rich layer at the base grades upward into a coarser and/or a heavy mineral poor layer at the top. This...
Determination of palladium and platinum by atomic absorption
Marian Moeller Schnepfe, F.S. Grimaldi
1969, Talanta (16) 591-595
Palladium and platinum are determined by atomic absorption after fire-assay concentration into a gold bead. The limit of determination is ~0·06 ppm in a 20-g sample. Serious depressive interelement interferences are removed by buffering the solutions with a mixture of cadmium and copper sulphates with cadmium...
Equipment and techniques for low-altitude aerial sensing of water-vapor concentration and movement
R.L. Howell
1969, Remote Sensing of Environment (1) 13-18
Progress in the development of equipment and techniques for making rapid measurements of moisture movement through the atmosphere over a large area is described. Airborne sensing elements measure relative humidity, temperature, and air currents. These data are telemetered to a ground-based station...
Determination of traces of silver in waters by anion exchange and atomic absorption spectrophotometry
T.T. Chao, M. J. Fishman, J. W. Ball
1969, Analytica Chimica Acta (47) 189-195
A method has been developed for the accurate determination of 0.1–1 μg of silver per liter of water. The method permits stabilization of silver in water without loss to container walls. Optimum conditions have been established for the complete recovery of silver from water with an anion-exchange column, for quantitative...
Records of wells and springs, San Antonio area, Texas
Paul L. Rettman
1969, Report
No abstract available....
Records of precipitation, aquifer head, and ground-water recharge to the Edwards and associated limestones, San Antonio area, Texas, 1968
Paul L. Rettman
1969, Edwards Underground Water District Bulletin 21
No abstract available....
The rapids and the pools - Grand Canyon: Chapter D in The Colorado River region and John Wesley Powell (Professional Paper 669)
Luna Bergere Leopold
1969, Professional Paper 669-D
Through the Grand Canyon the Colorado drops in elevation about 2,200 feet in 280 miles; most of this drop occurs in rapids that account for only 10 percent of the distance. Despite the importance of rapids, there are no waterfalls. Depth measurements made at 1/10-mile intervals show that the bed...
Distribution of oligochaetes in western Lake Erie, 1961
Jarl K. Hiltunen
1969, Limnology and Oceanography (14) 260-264
A total of 52,390 oligochaetes were collected from 40 stations in western Lake Erie in spring 1961. The population was composed of two families, Naididae and Tubificidae. Only six species of naidids were found. One, Paranais frici, is apparently new to the list of North American freshwater Naididae. Among the...
Cisco (Coregonus artedii) mortalities in a southern Michigan lake, July 1968
Peter J. Colby, Larry T. Brooke
1969, Limnology and Oceanography (14) 958-960
Cisco die-offs are common in the summer in certain lakes of northern Indiana and southern Michigan, along the southern boundary of the national distribution of coregonine fishes. Although numerous cisco die-offs have been reported, few, if any, have been accompanied by environmental information at the time of the die-off. On...
Seasonal fluctuations of Lake Michigan diatoms
Ruth E. Holland
1969, Limnology and Oceanography (14) 423-436
Diatoms were collected in four areas of Lake Michigan and in southern Green Bay from April to early November 1965. The flora of the lake was characterized by Fragilaria crotonensis, Tabellaria flocculosa, Melosira islandica, Cyclotella 'glomerata-stelligera,' Cyclotella michiganiana, Asterionella formosa, and Stephanodiscus tenuis. Stephanodiscus niagarae always dominated the diatom biomass...
Surveyor alpha-scattering data: Consistency with lunar origin of eucrites and howardites
M.B. Duke
1969, Science (165) 515-517
No abstract available....
Additional breeding birds in Roscoe area
Harold F. Duebbert
1969, South Dakota Bird Notes (21) 36-36
Abstract has not been submitted...
Selected hydrologic data, southern Utah and Goshen Valleys, Utah
R.M. Cordova
1969, Utah Basic-Data Release 16
The purpose of this report is to present basic geologic, ground-water, surface-water, and quality of water data that are useful for the study and effective development of the water resources of southern Utah and Goshen Valleys. This report supplements an interpretive report which will be published later.Much of the basic...
Mallard hatching from an egg cracked by freezing
Raymond J. Greenwood
1969, The Auk (86) 752-754
The eggs of early-nesting waterfowl in North Dakota are frequently exposed to subfreezing temperatures. Mallards (Anas platyrhynchos) and Pintail (Anas acuta), normally the first ducks to arrive in the spring, begin limited early nesting in min-April. Nighttime temperatures during this period frequently drop below freezing, and late spring blizzards are...
