Calcium-magnesium carbonate solid solutions from Holocene conglomerate cements and travertines in the Coast Range of California
I. Barnes, J. R. O’Neil
1971, Geochimica et Cosmochimica Acta (35) 699-718
Two calcium-magnesium carbonate solid solutions form Holocene travertines and conglomerate cements in fresh water stream channels of the Coast Range of California. Calcite does not yield the {015} diffraction maximum. The {006} diffraction maximum is lacking over most of the range of composition...
Trees and streams: The efficiency of branching patterns
Luna Bergere Leopold
1971, Journal of Theoretical Biology (31) 339-354
Extending the analysis of branching patterns of the drainage net of rivers, originated by Horton, the relation of average numbers and lengths of tree branches to size of branch was investigated. Size of branch was defined by branch order, or its position in the hierarchy of tributaries. It was found...
Scanning electron microscopy of clays and clay minerals
B.F. Bohor, R.E. Hughes
1971, Clays and Clay Minerals (19) 49-54
The scanning electron microscope (SEM) proves to be ideally suited for studying the configuration, texture, and fabric of clay samples. Growth mechanics of crystalline units—interpenetration and interlocking of crystallites, crystal habits, twinning, helical growth, and topotaxis—also are uniquely revealed by the SEM.Authigenic kaolins make up the bulk of the examples...
Isotopic composition of strontium in three basalt-andesite centers along the Lesser Antilles arc
C. E. Hedge, J.F. Lewis
1971, Contributions to Mineralogy and Petrology (32) 39-47
Si87/Sr86 ratios have been determined for lavas and py lastic rocks from three basalt-andesite centers along the Lesser Antilles arc—Mt. Misery on the island of St. Kitts, Soufriere on the island of St. Vincent, and Carriacou, an island of The Grenadines. The average Si87/Sr86 content of these rocks...
Variation of iridium in a differentiated tholeiitic dolerite
L. P. Greenland
1971, Geochimica et Cosmochimica Acta (35) 319-322
Iridium has been determined in a drill core from the Great Lake (Tasmania) dolerite sheet. Iridium decreases systematically from the mafic dolerites (0.25 ppb) to the granophyres (0.006 ppb). The trend with differentiation closely parallels that of chromium....
Giant American brook lampreys, Lampetra lamottei, in the upper Great Lakes
Patrick J. Manion, Harold A. Purvis
1971, Journal of the Fisheries Research Board of Canada (28) 616-620
Five female American brook lampreys, Lampetra lamottei, collected in lakes Michigan and Huron averaged nearly twice as long and about six times as heavy as American brook lampreys of normal size. Three factors suggested that the giant lampreys may have fed parasitically after metamorphosis: morphological adaptations of the species for parasitic...
Water Resources Data for New Mexico; Part 1, Surface Water Records
Water Resources Division, U.S. Geological Survey
1971, Water Data Report NM-70-1
Surface-water records for the 1970 water year for New Mexico, including records of streamflow or reservoir storage at gaging stations, partial-record stations, and miscellaneous sites, are given in this report and their locations shown in figures 1, 2. Records for a few pertinent gaging stations in bordering States also are...
Geology of the Coamo area, Puerto Rico, and its relation to the volcanic arc-trench association
Lynn Glover
1971, Professional Paper 636
No abstract available....
Selenography and selenodesy with Apollo whole-disk lunar photographs I. Selenography
D.W.G. Arthur
1971, Icarus (14) 388-418
The Apollo whole-disk lunar photographs, with spacecraft lunar nadirs about 70° from the center of mean face, have considerable selenodetic potential provided that the requirements of resolution and precision can be met. Uncertainties in the internal camera geometry degrade the precision and make...
Uranium-series dating of some pleistocene marine deposits in Southern California
Barney J. Szabo, J. G. Vedder
1971, Earth and Planetary Science Letters (11) 283-290
Analyses of uranium isotopes and their long-lived daughter products showed evidence of uranium migration in most of the 22 fossil mollusk shell samples from marine terrace deposits in southern California. Two samples, however, remained an ideal closed system as indicated by concordant230Th/234U...
A Cuban tektite
G.D. Garlick, C. W. Naeser, J. R. O’Neil
1971, Geochimica et Cosmochimica Acta (35) 731-734
A large tektite from Cuba is classified with other North American tektites on the basis of its age. The major-element chemistry, oxygen isotopic composition, refractive index and density of the Cuban tektite are within the ranges exhibited by bediasites....
Some Pb and Sr isotopic measurements on eclogites from the Roberts Victor mine, South Africa
W.I. Manton, M. Tatsumoto
1971, Earth and Planetary Science Letters (10) 217-226
Five nodules of eclogite, one nodule of garnet peridotite and one sample of kimberlite from the Roberts Victor mine were analyzed for concentrations of U, Th, Pb, Rb and Sr and isotopic compositions of Pb and Sr. In the eclogites, U content...
Birds observed in North Dakota during the winter of 1970-71
J. T. Lokemoen, P. F. Springer
1971, Prairie Naturalist (3) 51-54
Abstract has not been submitted...
Use of stock ponds by breeding waterfowl and other water birds in Stanley County, South Dakota
J. T. Lokemoen
1971, South Dakota Bird Notes (23) 34-36
Abstract has not been submitted...
Blood cell lineage in the sea lamprey, Petromyzon marinus (Pisces: Petromyzontidae)
George W. Piavis, James L. Hiatt
1971, Copeia (1971) 722-728
Blood cell types of the sea lamprey, Petromyzon marinus, are described and identified and the lineage of mature circulating cells in peripheral blood is traced to blast cells in the hematopoietic fat body. The fat body appears to be the phylogenetic precursor of bone marrow in higher forms, since blood...
Selective food preferences of walleyes of the 1959 year class in Lake Erie
John W. Parsons
1971, Transactions of the American Fisheries Society (100) 474-485
Stomachs were examined from 1,473 walleyes (Stizostedion vitreum vitreum) of the 1959 year class collected in western Lake Erie from June 1959 to October 1960. In the same period, the relative abundance and lengths of potential forage species were determined from trawl catches. The walleye fed almost entirely on fish....
Effects of temperature on electrolyte balance and osmoregulation of the alewife (Alosa pseudoharengus) in fresh and sea water
Jon G. Stanley, Peter J. Colby
1971, Transactions of the American Fisheries Society (100) 624-638
A study of the effects of temperature and salinity on ionoregulation in the alewife, Alosa pseudoharengus, revealed that concentrations of sodium, potassium, and calcium in plasma and muscle were similar in fish adapted to fresh water and those adapted to sea water. The non-stressed alewife is apparently an excellent...
Duck mortality caused by wind
H.A. Kantrud
1971, Prairie Naturalist (3) 32-32
Abstract has not been submitted...
A decade of international cooperation brings a standard seismic point of view
H. S Whitcomb Jr.
1971, Earthquake Information Bulletin (USGS) (3) 16-19
Whether in a castle in Italy, a police station in Iceland, o an abandoned gold mine in Australia, the sensitive instruments in the Worldwide Seismograph Network send a steady flow of standard earthquake records to the geophysical scientific community. They provide the raw data that make possible very precise earthquake...
Interaction between duck hepatitis virus and DDT in ducks
W.L. Ragland, Milton Friend, D.O. Trainer, N.E. Sladek
1971, Research Communications in Chemical Pathology and Pharmacology (2) 236-244
Injections of duck hepatitis virus (DVH) decreased, and exposure to DDT increased, hepatic microsomal mixed-function oxidase activity. Injection of DFV prior to exposure to DDT did not prevent stimulation of hepatic microsomal mixed-function oxidase activity by DDT and may have enhanced it....
A general evaluation of the frequency distribution of clay and associated minerals in the alluvial soils of Ceylon
J.W. Herath, R.W. Grimshaw
1971, Geoderma (5) 119-130
Clay mineral analyses were made of several alluvial clay materials from Ceylon. These studies show that the soil materials can be divided into 3 clay mineral provinces on the basis of the frequency distribution of...
Fluid inclusions in quartz crystals from South-West Africa
K.A. Kvenvolden, E. Roedder
1971, Geochimica et Cosmochimica Acta (35) 1209-1229
Quartz crystals from calcite veins of unknown age in Precambrian metasedimentary rocks at Geiaus No. 6 and Aukam farms in South-West Africa contain both primary and secondary inclusions filled with one or a variable combination of: organic liquid, moderately saline aqueous liquid, dark-colored...
Comments on the use of Hiatella arctica for determining cenozoic sea temperatures
R.W. Rowland, D.M. Hopkins
1971, Palaeogeography, Palaeoclimatology, Palaeoecology (9) 59-61
[No abstract available]...
Imaging of Mercury and Venus from a flyby
B. C. Murray, M. J. S. Belton, G. Edward Danielson, M. E. Davies, G. P. Kuiper, B. T. O’Leary, V.E. Suomi, N.J. Trask
1971, Icarus (15) 153-173
This paper describes the results of study of an imaging experiment planned for the 1973 Mariner Venus/Mercury flyby mission. Scientific objectives, mission constraints, analysis of alternative systems, and the rationale for final choice are presented. Severe financial constraints ruled out the best technical alternative for flyby imaging, a film/readout system,...
A test of the 40Ar/39Ar age spectrum technique on some terrestrial materials
M. A. Lanphere, G. Brent Dalrymple
1971, Earth and Planetary Science Letters (12) 359-372
40Ar/39Ar age spectra were determined for 10 terrestrial rock and mineral samples whose geologic history is known from independent evidence. The spectra for six mineral and whole rock samples, including biotite, feldspar, hornblende, muscovite, and granodiorite, that have experienced post-crystallization heating did...
