Water resources of the Coamo area, Puerto Rico
Ennio V. Giusti
1971, Report
This study, like other similar studies, was made possible by a cooperative water-resources program between the U.S. Geological Survey and the Puerto Rico Water Resources Authority (at the time), representing also the Puerto Rico Aqueduct & Sewer Authority and the Puerto Rico Industrial Development Company.This report covers the hydrologic investigation...
Open-channel integrating-type flow meter
K.C. Koopman
1971, Report
A relatively inexpensive meter for measuring cumulative flow in open channels with a rated control,. called a "totalizer", was developed. It translates the nonlinear function of gage height to flow by use of a cam and a float. A variable resistance element in an electronic circuit is controlled by the...
Action report: conservation and enhancement of fish and wildlife in the National Water Resources Program. State fish and game departments, national conservation organizations, and Bureau of Sport Fisheries and Wildlife
T.J. Bond
1971, Report
Comments on An unconventional approach to flood frequency analysis
Manuel A. Benson
1971, International Association of Scientific Hydrology - Bulletin (16) 91-91
No abstract available....
Application of remote sensing techniques for appraising changes in wildlife habitat
Harvey K. Nelson, Albert T. Klett, John E. Johnston
1971, Conference Paper, International Workshop in Earth Resources Survey Systems
An attempt was made to investigate the potential of airborne, multispectral, line scanner data acquisition and computer-implemented automatic recognition techniques for providing useful information about waterfowl breeding habitat in North Dakota. The spectral characteristics of the components of a landscape containing waterfowl habitat can be detected with airborne scanners. By...
Notice to lessees and operators of federal oil, gas, and sulphur leases in the outer continental shelf Gulf of Mexico region: OCS order nos. 1 through 12: Gulf of Mexico
Water Resources Division, U.S. Geological Survey
1971, Report
No abstract available....
A comment concerning the applicability of the “open system” model to dating of fossil bones from San Joaquin soil, California
Barney J. Szabo
1971, Earth and Planetary Science Letters (10) 252-252
No abstract available....
Biology of larval sea lampreys (Petromyzon marinus) of the 1960 year class, isolated in the Big Garlic River, Michigan, 1960-65
Patrick J. Manion, Alberton L. McLain
1971, Technical Report 16
The early life history of the sea lamprey, from hatching to the first capture of metamorphosed individuals, is described from observations on a known-age population isolated in a tributary of southern Lake Superior. The population had its origin in the spring of 1960, when 722 sea lampreys nearing spawning condition...
Aeromagnetic study of the midcontinent gravity high of central United States
Elizabeth R. King, Isidore Zietz
1971, Geological Society of America Bulletin (82) 2187-2208
A composite map of detailed aeromagnetic surveys over the midcontinent gravity high provides coverage of the 600-mi-long buried belt of mafic rocks of the Keweenawan Series from their outcrop localities in Minnesota and Wisconsin through Iowa and Nebraska. A map of the subsurface extent of the mafic rocks, based on...
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....
Soft-egg disease of fishes
K. Wolf
1971, Fish Disease Leaflet 34
No abstract available at this time...
Magnetic susceptibilities of crystalline rock samples, Yukon River-Porcupine River area, east-central Alaska
William Peters Brosge, Arthur Conradi
1971, Open-File Report 71-55
No abstract available....
Visceral granuloma in brook trout (Salvelinus fontinalis)
C. E. Dunbar, R. L. Herman
1971, Journal of Nutrition (101) 1445-1452
Brook trout were fed a synthetic diet with suspect diet components added or a meat-meal diet with individual components removed to determine their effect on the incidence of visceral granuloma. Removal or addition of cottonseed meal had the greatest effect on incidence. Gossypol was not the causative agent. The disease...
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...
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...
Thermoluminescence of Apollo 12 lunar samples
Richard R. Doell, G. Brent Dalrymple
1971, Earth and Planetary Science Letters (10) 357-360
Thermoluminescence (TL) glow curve and decay characteristics of Apollo 12 fines and soil samples are similar to those from Apollo 11. Interpretation of the results from the core sample is difficult because of inadequate sample, spacing, but it appears that the part...
Floods of Utah, magnitude and frequency characteristics through 1969
Elmer Butler
1971, Report
No abstract available....
Water in the economy of the Jackson Purchase region of Kentucky
Robert W. Davis, T. William Lambert, Arnold J. Hansen Jr.
1971, Kentucky Geological Survey Special Publication 20-10
No abstract available....
Tertiary climatic fluctuations and methods of analysis of tertiary floras
J. A. Wolfe
1971, Palaeogeography, Palaeoclimatology, Palaeoecology (9) 27-57
On theoretical grounds, an analysis of the physiognomy of a Tertiary leaf assemblage is more direct and reliable than a circuitous floristic analysis in assigning thermal regimes to fossil assemblages. Using primarily foliar physiognomy and secondarily floristic composition, it can be shown that: (1) some middle latitude Tertiary assemblages probably...
Lake-level fluctuations in the Kenai-Soldotna area, Alaska, 1967-71
G. S. Anderson, S. H. Jones
1971, Open-File Report 71-7
No abstract available....
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....
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...
