Imaging experiment: The Viking Lander
T.A. Mutch, A.B. Binder, F.O. Huck, E.C. Levinthal, E. C. Morris, C. Sagan, A.T. Young
1972, Icarus (16) 92-110
The Viking Lander Imaging System will consist of two identical facsimile cameras. Each camera has a high-resolution mode with an instantaneous field of view of 0.04°, and survey and color modes with instantaneous fields of view of 0.12°. Cameras are positioned one meter...
Paleomagnetism of Midway Atoll lavas and northward movement of the Pacific plate
S. Gromme, F.J. Vine
1972, Earth and Planetary Science Letters (17) 159-168
Two deep drill holes through the reef limestones of Midway Atoll penetrated 120 m and 19 m of basaltic lavas that were dated by the KAr method at 18 my. Inclinations of natural remanent magnetization have been measured...
New data on selected Ivory Coast tektites
F. Cuttitta, M. K. Carron, C. S. Annell
1972, Geochimica et Cosmochimica Acta (36) 1297-1309
Fourteen Ivory Coast tektites exhibit a range of bulk indices of refraction of 1.5156 to 1.5217 ± 0.0004 and of bulk specific gravities of 2.428 to 2.502 ±0.005. Seven of these Ivory Coast (IVC) tektites were analyzed for major and minor element content. Compared to tektites from other strewn fields,...
Differentiation and volcanism in the lunar highlands: Photogeologic evidence and Apollo 16 implications
N.J. Trask, J.F. McCauley
1972, Earth and Planetary Science Letters (14) 201-206
Materials of possible volcanic origin in the lunar highlands include (1) highland plains materials, (2) materials forming closely spaced hills in which summit furrows and chains of craters are common and (3) materials forming closely spaced hills (some of which parallel the...
Geological framework of the south polar region of Mars
B. C. Murray, L.A. Soderblom, J.A. Cutts, R.P. Sharp, D.J. Milton, R.B. Leighton
1972, Icarus (17) 328-345
The first 4 months of Mariner 9 photography of the south polar region are discussed. Three major geological units have been recognized, separated by erosional unconformities. From oldest to youngest they are: cratered terrain, pitted plains, and laminated terrain. The latter unit is unique in occurrence to the polar region,...
The martian atmosphere: Mariner 9 television experiment progress report
C.B. Leovy, G.A. Briggs, A.T. Young, B.A. Smith, James B. Pollack, E.N. Shipley, R.L. Wildey
1972, Icarus (17) 373-393
Atmospheric phenomena appearing in the Mariner 9 television pictures are discussed in detail. The surface of the planet was heavily obscured by a global dust storm during the first month in orbit. Brightness data during this period can be fitted by a semi-infinite...
Imogolite and allophane formed in saprolite of basalt on Maui, Hawaii
K. Wada, T. Henmi, N. Yoshinaga, S. H. Patterson
1972, Clays and Clay Minerals (20) 375-380
Inorganic gel and allophane collected from basaltic saprolite on Maul, Hawaii, and studied by Patterson in I964 were reexamined. The main constituent of the gel is imogolite, and gibbsite and allophane are the minor constituents. Electron and X-ray diffraction patterns, DTA curve, and an infrared spectrum of the gel are...
Occurrence of chromian, hercynitic spinel ("pleonaste") in Apollo-14 samples and its petrologic implications
E. Roedder, P.W. Weiblen
1972, Earth and Planetary Science Letters (15) 376-402
Many isolated grains of a reddish pleonaste-type spinel occur in fines and metabreccia samples, particularly 14 319. Electron microprobe analyses (104) of spinels and their associated phases include 58 of pleonaste which show Mg/(Mg + Fe) 0.44–0.62 and Cr/(Cr + Al) 0.017–0.134...
Imaging experiment: The Viking Mars orbiter
M. H. Carr, W.A. Baum, G.A. Briggs, H. Masursky, D.W. Wise, D. R. Montgomery
1972, Icarus (16) 17-33
The general objectives of the Imaging Experiment on the Viking Orbiter are to aid the selection of Viking Lander sites, to map and monitor the chosen sites during lander operations, to aid in the selection of future landing sites, and to extend our...
Silicate melt inclusions and glasses in lunar soil fragments from the Luna 16 core sample
E. Roedder, P.W. Weiblen
1972, Earth and Planetary Science Letters (13) 272-285
More than 2000 fragments were studied microscopically, and electron microprobe analyses were made of 39 selected areas, from a few square mm of polished surface, through 75- to 425-μm fragments of lunar soil from two samples of the Luna 16 core. The...
Radiative-neutron-capture gamma-ray analysis by a linear combination technique
A.B. Tanner, R.C. Bhargava, F. E. Senftle, J.M. Brinkerhoff
1972, Nuclear Instruments and Methods (102) 61-72
The linear combination technique, when applied to a gamma-ray spectrum, gives a single number indicative of the extent to which the spectral lines of a sought element are present in a complex spectrum. Spectra are taken of the sought element and of various...
Fluorination of 1,2,3-, 1,2,4-, and 1,3,5-trihalobenzenes with potassium fluoride in dimethyl sulfone
R.H. Shiley, D. R. Dickerson, G. C. Finger
1972, Journal of Fluorine Chemistry (2) 19-26
Three trifluorobenzenes were prepared by reaction of the corresponding trichlorobenzenes with potassium fluoride or pottassium fluoride-cesium fluoride mixtures in dimethyl sulfone. Molar yields were 12.8% for 1,2,3-, 8.3% for 1,2,4-, and 56.2% for 1,3,5-. Improved yields of the 1,2,3- (23.9%) and the 1,2,4-...
Destruction of the ecosystem in the Great Lakes and possibilities for its reconstruction
Stanford H. Smith
Remedios W. Moore, editor(s)
1972, Book chapter, Progress in fishery and food science
This paper is a review of the sequence of events within the Great Lakes and their drainage to provide a basis for interpreting probable cause-and-effect relations between events of settlement and changes in the ecosystem of the Great Lakes. Possibilities of restoration of the lakes are discussed. A plan to...
Highways and their impact on the wildlife in the pinyon-juniper-oak woodland and grassland in north-central Arizona
Charles L. Douglas, R. Roy Johnson
1972, Book
No abstract available....
Reconnaissance geologic map of the Cedaredge area, Delta County, Colorado
W. J. Hail Jr.
1972, IMAP 697
No abstract available....
Seasonal population characteristics of the opossum shrimp, Mysis relicta, in southeastern Lake Michigan, 1970-71
James B. Reynolds, G.M. DeGraeve
1972, Proceedings of the 15th Conference on Great Lakes Research (15) 117-131
This study of depth distribution, abundance, growth, reproduction and standing crop of the opossum shrimp, Mysis relicta, in southeastern Lake Michigan was based on monthly samples collected from August 1970 through July 1971 (except February and March). Population density was usually low at 10-20 fathoms, moderate at 25-30 fathoms and...
Limnology and fish ecology of sockeye salmon nursery lakes of the world
Wilbur L. Hartman, R.L. Burgner
1972, Journal of the Fisheries Research Board of Canada (29) 699-715
Many important, recently glaciated oligotrophic lakes that lie in coastal regions around the northern rim of the Pacific Ocean produce anadromous populations of sockeye salmon, Oncorhynchus nerka. This paper describes the limnology and fish ecology of two such lakes in British Columbia, five in Alaska, and one in Kamchatka. Then...
Population biology of alewives, Alosa pseudoharengus, in Lake Michigan, 1949-70
Edward H. Brown Jr.
1972, Journal of the Fisheries Research Board of Canada (29) 477-500
Alewives were unknown in Lake Michigan before 1949, but became extremely abundant in the 1960s and soon exceeded the carrying capacity of the lake. In 1967 they were decimated by a lakewide mass mortality, and have since been less abundant as "adults" (≥120 mm long), although numerous young were produced in...
Life history and production of walleyes of the 1959 year-class in western Lake Erie, 1959-62
John W. Parsons
1972, Transactions of the American Fisheries Society (101) 655-661
Because of the near collapse of the fishery for walleyes (Stizostedion vitreum vitreum) in Lake Erie in the late 1950's, walleyes of the 1959 year-class were studied to gain a better understanding of the life history of the species and the dynamics of the population. In the summer of 1959...
Factors of ecologic succession in oligotrophic fish communities of the Laurentian Great Lakes
Stanford H. Smith
1972, Journal of the Fisheries Research Board of Canada (29) 717-730
Oligotrophic fish communities of the Great Lakes have undergone successive disruptions since the mid-1800s. Major contributing factors have been intensive selective fisheries, extreme modification of the drainage, invasion of marine species, and progressive physical–chemical changes of the lake environments. Lake Ontario was the first to be affected as its basin...
The future of salmonid communities in the Laurentian Great Lakes
Stanford H. Smith
1972, Journal of the Fisheries Research Board of Canada (29) 951-957
The effects of human population growth, industrialization, and the introduction of marine fishes have reduced the suitability of each of the Great Lakes for oligotrophic fish communities. The ultimate consequence has been a reduction of fishery productivity that has ranged from extreme in Lake Ontario to moderate in Lake Superior....
Effect of certain anesthetic agents on mallard ducks
D.R. Cline, R. J. Greenwood
1972, Journal of the American Veterinary Medical Association (161) 624-633
Four anesthetic agents used in human or veterinary medicine and 3 experimental anesthetic preparations were evaluated for effectiveness in inducing narcosis when administered orally to game-farm mallard ducks (Anas platyrhynchos).Tribromoethanol was the only compound to satisfy criteria of initial tests. Mean duration of the induction, immobilization, and recovery periods was...
Policy statement on the use of toxicant in management of aquatic resources
R.S. Cook, A.M. Beeton, P.M. Cook, P.H. Derse, A. Hasler, R. E. Lennon, P. Sager, W. Selbig
1972, SFI Bulletin (233) 1-2
Abstract has not been submitted...
Exposure times necessary for antimycin and rotenone to eliminate certain freshwater fish
P.A. Gilderhus
1972, Journal of the Fisheries Research Board of Canada (29) 199-202
In laboratory flowing-water troughs exposure required to induce 100% mortality, regardless of time to death for antimycin and rotenone against selected freshwater fish species was determined. Carp and white suckers required shorter exposures to antimycin (6 hr) than to rotenone (18–24 hr) at field-use concentrations of 5 and 50 ppb respectively. Bullheads were...
Studies on the control of whirling disease (Myxosoma cerebralis)
G.L. Hoffman Sr., G.L. Hoffman Jr.
1972, Journal of Wildlife Diseases (8) 49-53
Based on presumptive evidence of death (extrusion of polar filaments and disintegration of sporoplasm) 1.0%, 0.5%, and 0.25% calcium oxide or potassium hydroxide killed the spores of Myxosoma cerebrallis in vitro. Chlorine at 400 ppm destroyed 36% to 90% of the spores but 13% to 37% of those in the controls...
