Sex ratios and age raios in North American ducks
Frank C. Bellrose, Thomas G. Scott, Arthur S. Hawkins, Jessop B. Low
1961, Illinois Natural History Survey Bulletin (27) 391-474
The sex classes and age classes of various species of ducks constitute measurable elements of the populations. The present study deals primarily with sex ratios and age ratios and the ways in which they relate to population productivity. The present study is an evaluation of sex and age ratios in...
Dating desert ground water
L. Thatcher, M. Rubin, Glen F. Brown
1961, Science (134) 105-106
Tritium in Arabian rainfall has followed the trend observed in North America with peaks in 1958 and the spring of 1959. These measurements will be useful for future hydrologie studies. Water from wadi gravels averages 10 yr old. Carbon-14 measurements of deep waters indicate ages of several thousand years....
Use of water-well data in interpreting occurrence of aquifers in northeastern Lyon County, Minnesota
Harry G. Rodis
1961, GSA Bulletin (72) 1275-1278
In northeastern Lyon County the areal distribution of aquifers of Cretaceous age determined from well-bottom altitudes suggests a series of interbedded sandstones striking northwestward and overlapping one another to the northeast. Probably the numerous thin sandstone aquifers in the area were deposited near the flanks of a Precambrian granite “high”...
Microhematocrit values in rainbow trout, brown trout and brook trout
S. F. Snieszko
1961, Progressive Fish-Culturist (23) 114-119
No abstract available. ...
Distribution of uranium ore deposits in the elk ridge area, San Juan County, Utah
R. H. Campbell, R.Q. Lewis
1961, Economic Geology (56) 111-131
The Elk Ridge area of southeastern Utah contains uranium ore deposits in two lower members of the Chinle formation of Late Triassic age. Each member is mineralized in different parts of the area, and where both are present only the lower contains ore. Across the Elk Ridge area from southwest to northeast, successively younger beds...
Magmatic differentiation in the Uwekahuna Laccolith, Kilauea Caldera, Hawaii
K. J. Murata, D.H. Richter
1961, Journal of Petrology (2) 424-437
Petrographic and chemicoal studies of a suite of rocks from the Uwekahuna laccolith of Kilauea Volcano show that the original mafic tholeiitic magma differentiated into tholeiitic picrite, tholeiitic olivine gabbro, and an aphanitic rock approaching quartz-basalt in composition. Mechanisms involved were an initial gravity settling of olivine and a final filter pressing of...
Jadeite deposits of the clear creek area, New Idria district, San Benito county, California
R. G. Coleman
1961, Journal of Petrology (2) 209-247
Tectonic inclusions within the New Idria serpentine body contain jadeite in two distinct assemblages: (1) Lenslike inclusions containing a monomineralic green jadeite core surrounded by a calc-silicate rim. (2) Jadeite veins cross-cutting albite-crossite schist inclusions. In these veins jadeite coexists with low albite; green jadeite (Jd 75 Ac+Di+He 25)...
Fur catch in the United States, 1960
U.S. Bureau of Sport Fisheries and Wildlife
1961, Wildlife Leaflet 436
No abstract available....
Copper, vanadium, and uranium deposits in sandstone-their distribution and geochemical cycles
R. P. Fischer, J. H. Stewart
1961, Economic Geology (56) 509-520
Deposits of copper, vanadium, and uranium in nonmarine sandstones are numerous and widespread. Copper deposits, with or without uranium, are mainly resident in first-generation arkosic sandstones derived from granitic rock terrains; deposits rich in vanadium, with or without much uranium, are dominantly in second-generation sandstones derived from sedimentary rocks; and the uranium deposits with little...
Birds protected by Federal law
U.S. Bureau of Sport Fisheries and Wildlife
1961, Wildlife Leaflet 432
No abstract available....
Giant desiccation fissures on the Black Rock and Smoke Creek Deserts, Nevada
R. Willden, D. R. Mabey
1961, Science (133) 1359-1360
Open fissures, from 100 to several hundred feet apart, that have produced polygonal patterns on the Black Rock Desert, Nevada, are believed to be giant desiccation cracks resulting from a secular trend toward aridity in the last few decades. Similar features on the Smoke Creek Desert probably have the same...
Pox in mourning doves in the United States
L. N. Locke
1961, Journal of Wildlife Management (25) 211-212
No abstract available. ...
Analysis of a supposed clay fulgurite from Ontario
M. K. Carron, M.D. Lowman Jr.
1961, Nature (190) 40
No abstract available. ...
Palæomagnetic evidence relevant to a change in the Earth's radius
Allan Cox, Richard R. Doell
1961, Nature (190) 36-37
IT is important to note that if, during an expansion of the Earth, each point on the surface were to move radially outward, then all sampling areas would have the same relative geographical co-ordinates before and after expansion. Palæomagnetic results could not be used to detect an expansion of this...
Summary of discussion of pre-cambrian geochro-nology of Minnesota and adjacent areas
S. S. Goldich, A.O. Nier, H. Baadsgaard, J. Hoffman, H.W. Krueger
1961, Annals of the New York Academy of Sciences (91) 442-442
No abstract available. ...
Some paleozoic date in Maine, western Europe, and Southern United States
H. Faul
1961, Annals of the New York Academy of Sciences (91) 369-371
No abstract available. ...
Renal coccidiosis in oldsquaws (Clangula hyemalis) from Alaska
J. Christian Franson, Dirk V. Derksen
1961, Journal of Wildlife Diseases (17) 237-240
Renal coccidiosis was found in 4 of 12 oldsquaw ducks (Clangula hyemalis) collected from the north slope of Alaska and Prince William Sound. Numerous 1 to 2 mm white foci were observed on the kidney surface of one bird. Microscopically, there was distention of renal tubules with oocysts, flattening of...
1960 public use of National Wildlife Refuges
U.S. Fish and Wildlife Service
1961, Wildlife Leaflet 431
No abstract available....
A fly-rod electrode system for electrofishing
Robert E. Lennon
1961, Progressive Fish-Culturist (23) 92-93
No abstract available. ...
Infectious pancreatic necrosis of trout II: Experimental infections with brook trout
K. Wolf, C. E. Dunbar, E. A. Pyle
1961, Progressive Fish-Culturist (23) 61-65
No abstract available. ...
Modification of the microhematocrit technique with trout blood
H.N. Larsen, S. F. Snieszko
1961, Transactions of the American Fisheries Society (90) 139-142
Commercial and laboratory‐prepared capillary tubes for hematocrit were tested. A 10 percent solution of heparin was found to be best for the preparation of treated capillary tubes. For examination of trout blood laboratory‐prepared capillary tubes were found to be superior to commercial tubes which are designed for human blood. Sharp,...
Lava temperatures in the 1959 Kilauea eruption and cooling lake
W.U. Ault, Jerry P. Eaton, D.H. Richter
1961, GSA Bulletin (72) 791-794
The 1959 summit eruption of Kilauea Volcano, Hawaii, filled the crater of Kilauea Iki with a lake of lava 365 feet deep. Temperatures of the erupting basalt ranged between 1060° and 1190°C. Temperatures down a 12.7-foot-deep hole, drilled into the crust of the lake 5 months after cessation...
Preliminary geologic report on the 1960 U.S. Expedition to Bellingshausen Sea, Antarctica
C. Craddock, H.A. Hubbard
1961, Science (133) 886-887
Thurston Peninsula, although largely snow covered, exposes massive to foliated dioritic rock and schist exhibiting northeast-trending structures. One basalt pebble was found. The adjacent continental shelf is cut by submarine valleys. Peter I Island, a dissected basaltic volcano 250 miles to the northeast, was visited....
Floods in Minnesota--Magnitude and frequency
C. H. Prior, J.H. Hess
1961, Bulletin 12
No abstract available....
Water resources of the Minneapolis-St.Paul metropolitan area
Minnesota Department of Conservation
1961, Bulletin 11
No abstract available....
