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Page 6239, results 155951 - 155975

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Geochemistry and mineralogy of a uraniferous sub bituminous coal
Irving A. Breger, M. Deul, R. Meyrowitz
1955, Economic Geology (50) 610-624
A sample of subbituminous uraniferous coal from the Red Desert, Sweetwater County, Wyo., has been studied mineralogically. The coal contains gypsum (6 percent), kaolinite (1 percent), quartz (0.3 percent), calcite (trace), and limonite (trace). This suite of minerals and the absence of pyrite show that the coal has been subjected...
Sequence of alluviation along the Loup rivers, Valley County area, Nebraska
Robert D. Miller, Glenn R. Scott
1955, GSA Bulletin (66) 1431-1448
Alluviation along the North and Middle Loup rivers in Valley County, Nebraska, produced a series of alluvial silt beds on which are developed five interstadial soils of Brady (?), Cary and Mankato (?), Mankato (?), early Recent and late Recent age. No deposits of Illinoian age were found and in...
The lead-zinc veins of the chilete mining district in northern Peru
F.S. Simmons
1955, Economic Geology (50) 399-419
Lead-zinc-silver veins in the Chilete mining district in the Department of Cajamarca in northern Peru have been worked sporadically since the 17th century, but the greatest activity dates only from 1951. The ore deposits are in a thick section of andesitic volcanic rocks that overlie with marked unconformity a sequence...
Water-resources program of the Geological Survey in the Midwestern States
C. G. Paulsen
1955, Open-File Report 55-137
The program of basic water-resources investigations by the U.S Geological Survey in the Midwestern states is a highly coordinated undertaking. It represents a partnership among Federal, State, and participial agencies that has developed during the past 60 years from the mutual desire to obtain and maintain optimum knowledge of out...
Zones of regional metamorphism in the Precambrian of northern Michigan
Harold L. James
1955, GSA Bulletin (66) 1455-1488
Precambrian rocks are exposed throughout an area of about 7500 square miles in northern Michigan. Of this area, approximately 3300 square miles is underlain by relatively unmetamorphosed Upper Precambrian (Keweenawan), about 2700 square miles by metamorphosed Middle Precambrian (Huronian), and about 1500 square miles by metamorphosed Lower Precambrian (“Archean”). Flat-lying...
Violent mud-volcano eruption of lake city hot springs, northeastern California
Donald E. White
1955, GSA Bulletin (66) 1109-1130
During the night of March 1 and 2, 1951, an inconspicuous group of hot springs and small mud volcanoes in northeastern California burst into spectacular eruption, unequalled by other known mud volcanoes. The eruption cloud of steam, gases, and mud particles rose several thousand feet in the air and distributed...
The occurrence of hepatozoon in the gray squirrel (Sciurus carolinensis)
C. M. Herman, D.L. Price
1955, Journal of Protozoology (2) 48-51
Hepatozoon sciuri (Coles, 1914) is reported from gray squirrels (Sciurus carolinensis) in Washington, D.C. and Maryland. Blood smears stained with Giemsa's stain revealed a parasitemia in 16 to 71% of the squirrels examined. A technique for laking the red cells and concentrating the white cells in blood samples demonstrated this protozoon...
Radiocarbon dates of pre-Mankato events in eastern and central North America
R.F. Flint, M. Rubin
1955, Science (121) 649-658
1) A group of samples from horizons previously correlated with the upper part of the Cary substage confirms the correlation as reasonable and is consistently related in time to the dates of the peat layer at Two Creeks and subsequent Mankato events.2) A major glaciation affected the Great Lakes...
A gold-scheelite-cinnabar placer in Humboldt County, Nevada
Charles Ronald Willden, Preston Enslow Hotz
1955, Economic Geology (50) 661-668
Gold, scheelite, and cinnabar in amounts that might be profitably extracted are found in a placer deposit in the Dutch Flat mining district in north-central Nevada. These materials are the products of at least two and possibly three stages of metallogenic activity recorded in the...