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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...
The Shawangunk Formation (Upper Ordovician(?) to Middle Silurian) in eastern Pennsylvania
Jack Burton Epstein, Anita G. Epstein
1972, Professional Paper 744
The Shawangunk Formation of Early and Middle Silurian age, and possibly Late Ordovician age, in eastern Pennsylvania and northwestern New Jersey forms a thick clastic wedge of sediments derived from sourcelands to the southeast uplifted during the Taconic orogeny. The formation is divided into four newly denned members, from bottom...
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...