Geology and ground-water resources of Puerto Rico
Charles Lee McGuinness
1947, Economic Geology (42) 563-571
Puerto Rico, the easternmost and smallest of the Greater Antilles, has an axis of deformed and metamorphosed volcanic rocks of Upper Cretaceous age, intruded by dioritic rocks during the Antillean revolution. The hard-rock core is flanked on the north and south by limestones and clastic rocks of late Oligocene and...
The zinc content of plants on the friedensville zinc slime ponds in relation to biogeo-chemical prospecting
W.O. Robinson, H. W. Lakin, L.E. Reichen
1947, Economic Geology (42)
The zinc content of thirty different kinds of plants growing on slime ponds containing on the average 12.5 per cent zinc were determined by the dithizone method. The zinc content ranged from 39 p.p.m. in the fruit of the false Solomon's seal (Smilacina racemosa) to 5,400 in the horsetail (Equiseteum arvense). This latter plant varied considerably in zinc at...
Ground-water resources of Kansas
V.C. Fishel
1947, Transactions of the Kansas Academy of Science (50) 105-114
No abstract available. ...
Colleges and universities offering courses in wildlife management, 1946-47
Gustav Adolph Swanson, Lee Emmett Yeager
1947, Wildlife Leaflet 296
No abstract available....
The sangdong tungsten deposit, southern Korea
M. R. Klepper
1947, Economic Geology (42) 465-477
The Sangdong deposit consists of metamorphosed lenticular beds in a sequence of gently dipping argillaceous sedimentary rocks. It is believed that scheelite mineralization was simultaneous with metamorphism, followed by deposition of wolframite during a later hydrothermal phase. The reserve of ore is estimated to be 3,000,000 tons, containing 51,000 tons...
Vegetation of the Patuxent Research Refuge, Maryland
Neil Hotchkiss, Robert E. Stewart
1947, American Midland Naturalist (38) 1-75
No abstract available....
The effects of feeding DDT-treated insects to nestling birds
J.L. George, R.T. Mitchell
1947, Journal of Economic Entomology (40) 782-789
No abstract available. ...
Radioactivity of the rocks of the batholith of southern California
Esper S. Larsen Jr., N.B. Keevil
1947, GSA Bulletin (58) 483-494
Determination of radioactivity has been made on 43 rocks, carefully selected from the different mapped units of the complex Cretaceous batholith of Southern California; they range from gabbro to granite. The activity of the gabbro averages about 0.3 alphas/mg./hr., that of the tonalites, 0.8, the granodiorite 1.3, and the granites...
Bibliography on walrus
Emma M. Charters
1947, Wildlife Leaflet 293
No abstract available....
Petrology and structure of the Moa Chromite district, Oriente Province, Cuba
P. W. Guild
1947, Eos, Transactions, American Geophysical Union (28) 218-246
Chromite deposits In the Moa district, on the north coast of Oriente Province, Cuba, form one facies of the ultramafic complex in which they occur. Two planar structures, one a compositional layering due to variations in the relative proportions of olivine, pyroxene, plagioclase feldspar, and chromite, and the other a...
Geology and ground-water resources of the Salt River Valley area, Maricopa and Pinal counties, Arizona
Harris R. McDonald, Henry Newton Wolcott, John David Hem
1947, Report
No abstract available....
The Hungarian and chukar partridges in America
John W. Aldrich
1947, Wildlife Leaflet 292
No abstract available....
Present investigations of radioactive raw materials by the Geological Survey and a recommended program for future work
A.P. Butler Jr., F.W. Stead
1947, Trace Elements Investigations 36
The Geological Survey's program of investigation of radioactive raw materials is presented herewith under present investigations, plans for future investigations, plan of operation, and cost of operation. This report was prepared at the request of the Atomic Energy Commission. Present investigations are summarized to show the scope of the present Trace...
Sedimentary formations of Washington, D.C., and vicinity
N. H. Darton
1947, Report
No abstract available....
Geology and ground-water resources of the Wellton-Mohawk area, Yuma County, Arizona
Horace Maxson Babcock, Silas C. Brown, John David Hem
1947, Report
No abstract available....
The volcano letter: A weekly news leaflet of the Hawaiian Volcano Research Association - 1947
1947, Report
The Volcano Letter was an informal publication issued at irregular intervals by the Hawaiian Volcano Observatory (HVO) during the years 1925 to 1955. Individual issues contain information on volcanic activity, volcano research, and volcano monitoring in Hawaii. Information on volcanic activity at other locations is also occasionally included.The Volcano Letter...
Geology and ground-water resources of the island of Niihau, Hawaii
Harold T. Stearns, Gordon A. Macdonald
1947, Bulletin 12
Niihau lies 171/2 miles southwest of Kauai. Its area is 72 square miles, and its highest point has an altitude of 1,281 feet. The population is about 180, chiefly Hawaiians. The annual rainfall at Kiekie, the ranch headquarters, generally ranges between 18 and 26 inches. The chief industries are the...
Geology and ground-water resources of the island of Molokai, Hawaii
Harold T. Stearns, Gordon A. Macdonald
1947, Bulletin 11
The island of Molokai is the fifth largest of the Hawaiian Islands, with an area of 250 square miles. It lies 25 miles southeast of Oahu, and 8.5 miles northwest of Maui. It consists of two principal parts, each a major volcanic mountain. East Molokai rises to 4,970 feet altitude....
Geology of San Antonio Canyon, California, in relation to ground-water storage
P. Eldon Dennis
1947, Open-File Report 47-33
At least two periods of relative stability in the history of the erosion of San Antonio Canyon are indicated by the bench-like features produced by the laterally cutting stream and by the remnants of older alluvium left by the stream when it was cutting at these higher levels. In addition,...
Reconnaissance report on geology of Eklutna Lake dam site and conduit route near Anchorage, Alaska
A. F. Bateman Jr.
1947, Open-File Report 48-13
Summary and Recommendations 1. Eklutna Lake and Eklutna Creek lie in a wide, deep, glaciated, trough-like valley. Downstream from the lake, this valley is partially filled with unconsolidated glacial and alluvial deposits. 2. Eklutna Lake dam site, located about 400 feet below the lake outlet, is suitable for a low...
A bacterial disease of the lobster (Homarus americanus)
S. F. Snieszko, C. C. Taylor
1947, Science (105) 500-500
No abstract available....
Ground-water resources and problems of the Cactus Flat-Artesia area, San Simon Basin, Arizona
Leonard C. Halpenny, Robert L. Cushman, J.D. Hem
1947, Open-File Report 47-35
No abstract available....
Distribution, abundance, and spawning season and grounds of the kiyi, Leucichthys kiyi Koelz, in Lake Michigan
Ralph Hile, Hilary J. Deason
1947, Transactions of the American Fisheries Society (74) 143-165
From May to November, inclusive, the kiyis of southern Lake Michigan (north to and including localities off Kewaunee, Wisconsin, and Frankfort, Michigan) characteristically inhabit depths of more than 50 fathoms, although small numbers commonly are taken in shallower water (as shallow as 20 29 fathoms). There is evidence that the...
Contents of crops, gizzards, and droppings of bobwhite quail force-fed known kinds and quantities of seeds
G.H. Jensen, L.J. Korschgen
1947, Journal of Wildlife Management (11) 37-43
No abstract available. ...
Geology and ground water conditions at Minot, North Dakota
P.D. Akin
1947, North Dakota Ground Water Studies 6
No abstract available....
