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Page 6303, results 157551 - 157575

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Preliminary report of the Centennial Range, Montana-Idaho
Frederick Sauli Honkala
1953, Open-File Report 53-123
Phosphate rock is present in the Phosphoria formation of Permian age in the Centennial Range of southwestern Montana and adjoining parts of Idaho. A Study was made to map the Phosphoria formation, study its stratigraphy, and to ascertain the reserves and mining problems. In the Centennial Range the Phosphoria formation...
Niobium (columbium) and titanium at Magnet Cove and Potash Sulphur Springs, Arkansas
Verne Charles Fryklund Jr., R. S. Harner, E.P. Kaiser
1953, Open-File Report 53-74
This work was done because niobium (columbium) has been found in several of the minerals and rocks of the Magnet Cove and Potash Sulphur Springs areas. Niobium is in demand for use in high-temperature and non-creep steels.The Magnet Cove and Potash Sulphur Springs areas are in central Arkansas between Malvern...
Correlation of the Cretaceous formations of Greenland and Alaska
Ralph Willard Imlay, John B. Reeside Jr.
1953, Open-File Report 53-135
This is Number 10d of a series of correlation charts prepared for the Committee on Stratigraphy of the National Research Council. It has been sponsored by the U.S. Geological Survey and has required about seven months' time of both authors gathering and compiling data and evaluating fossil evidence. As...