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Publication Extents

Not all publications have extents, not all extents are completely accurate
Sampling of copper-bearing Keweenawan rocks of northwestern Wisconsin
Carl E. Dutton
1972, Open-File Report 72-98
Metallic copper or copper minerals are locally present, in flows, conglomerate, siltstone, and shale of Keweenawan age that underlie about 3,000 square miles of northwestern Wisconsin. Representative samples taken from 24 of the reported occurrences in lava or conglomerate contain 0.0075 to 0.69 percent copper; 10 of them have more...
Map showing length of freeze-free season in the Salina quadrangle, Utah
1972, IMAP 591-E
In general, long freeze-free periods occur at low elevations, and short freeze-free periods occur at high elevations. But some valley floors have shorter freeze-free seasons than the glancing foothills because air cooled at high elevations flows downward and is trapped in the valleys. This temperature pattern occurs in the western...
Geology and Mineral Resources of the Northern Part of the North Cascades National Park, Washington
Mortimer Hay Staatz, Rowland W. Tabor, Paul L. Weis, Jacques F. Robertson, Ronald M. Van Noy, Eldon C. Pattee
1972, Bulletin 1359
The northern part of the North Cascades National Park in northern Washington is north of the Skagit River between Mount Shuksan on the West and Ross Lake on the east. The area occupies approximately 500 square miles of steep mountains and thickly forested valleys centered on the precipitous Picket Range. Old...
Mercury distribution in ancient and modern sediment of northeastern Bering Sea
C. Hans Nelson, D.E. Pierce, Kam Leong, F.F. Wang
1972, Open-File Report 72-268
A reconnaissance of surface and subsurface sediments to a maximum depth of 244 feet below the sea floor shows that natural mercury anomalies from 0.2 to 1.3 ppm have been present in northeastern Bering Sea since early Pliocene. The anomalies and mean values are highest in modern beach (maximum 1.3...