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Publication Extents

Not all publications have extents, not all extents are completely accurate
Stratigraphic sections of the Phosphoria formation in Montana
R. W. Swanson, M. R. Klepper, W.R. Lowell, F.S. Honkala, E. R. Cressman, D.A. Bostwick, O.A. Payne, E. T. Ruppel
1951, Open-File Report 51-18-B
The first of a series of reports giving detailed stratigraphic sections of the Phosphoria formation in the Western phosphate field as measured and described by the Geological Survey will be released as Circulars within the next few months. Because of the needs of industry for many of these data during...
Detroit River group in the Michigan basin
Kenneth K. Landes
1951, Circular 133
This report attempts to correlate the outcropping rocks in the type locality of the Detroit River group with the thick sequence of rocks that has been explored by many drilled wells in the Michigan Basin during the last twenty years. The surface nomenclature as recently revised (Ehlers, 1950) is suggested...
Reconnaissance of radioactive rocks of Maine
John M. Nelson, Perry F. Narten
1951, Trace Elements Investigations 68
The state of Maine was traversed with car-mounted Geiger-Mueller equipment in the late summer of 1948 and the radioactivity of approximately 4,600 miles of road was logged. All samples were analyzed, both in the field by comparing the radioactivity of each sample to the radioactivity of a stranded measured with a...
Reconnaissance of radioactive rocks of Massachusetts
Donald H. Johnson
1951, Trace Elements Investigations 69
During the 1948 and 1949 field seasons radiometric car traverses were made along the numbered federal and state highways and along many unnumbered roads of Massachusetts. Near Worcester pegmatitic rocks are estimated to contain about 250 pounds of uranium and 8,500 pounds of thoria per foot of depth. Near Southbridge pegmatitic rocks are...
Geology of anthracite in the southwestern part of the Mount Carmel quadrangle, Pennsylvania
Howard Eugene Rothrock, H. C. Wagner, Boyd R. Haley, Harold H. Arndt
1951, Coal Map 7
This report is the second to be prepared as a result of a geologic investigation of the anthracite fields of Pennsylvania begun after consultation with the Bureau of Topographic and Geologic Surveys of the Commonwealth of Pennsylvania.  This report and others in preparation will show (1) the location of coal...
Geology and coal resources of the Stonewall-Tercio area, Las Animas County, Colorado
Gordon H. Wood, R. B. Johnson, D. H. Eargle, R. T. Duffner, Harold Major
1951, Coal Map 4
The Stonewall-Tercio area lies along the western edge of the Trinidad coal field, Colorado, a part of the large Raton Mesa region of Colorado and New Mexico. Coal of Upper Cretaceous and early Tertiary age in that region has been utilized extensively for coking and for domestic heating. Present mining operations...