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Publication Extents

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Reconnaissance geochemistry of stream sediments from three areas near Juneau, Alaska
Henry C. Berg
1964, Open-File Report 64-13
Results of a preliminary inquiry into background metal content of stream sediments near Juneau, Alaska, and whether this background is related to geologic terrane indicate that stream sediments derived chiefly from metamorphic rocks show significantly higher modal nickel, zinc, and arsenic than do sediments derived mainly from sedimentary or igneous...
The geology, mineralogy and paragenesis of the Castrovirreyna lead-zinc-silver deposits, Peru
Richard Wheatley Lewis Jr.
1964, Open-File Report 64-103
The Castrovirreyna mining district lies in the Andean Cordillera of South Central Peru, and has been worked sporadically since its discovery in 1591. Supergene silver ores were first mined. Currently the district produces about 20,000 tons of lead-zinc ore and 5000 tons of silver ore annually. The district is underlain by...
Lower Permian stratigraphy of east-central Nevada and adjacent Utah
Patrick James Barosh
1964, Open-File Report 64-10
The Permian section near Ely, Nevada, consists of, in ascending order: Riepe Spring Limestone, a bluff-forming limestone with abundant corals, and Reipetown Sandstone, a buff to red very coarse-grained siltstone with minor carbonates, both formations of Steele (1960); Arcturus Formation, divisible into a Lower Member composed of alternating medium-bedded limestone...
Ground-water resources of southern New Castle County, Delaware
Donald Robert Rima, O. J. Coskery, P.W. Anderson
1964, Water Supply Paper 1756
Southern New Castle County has a land area of 190 square miles in northcentral Delaware. It is predominantly a rural area with a population of about 9,500 people who are engaged chiefly in agriculture. By and large, the residents are dependent upon ground water as a source of potable water....
Copper determinations on samples of alluvium and caliche from the rocky Range, Beaver County, Utah
Ralph Leroy Erickson, Albert Pasquale Marranzino
1964, Open-File Report 64-49
A study of the distribution of copper in transported alluvium on a pediment of the Rocky Range, Beaver County, Utah, undertaken to determine whether known copper deposits in bedrock concealed by alluvium could be detected by geochemical methods, was reported in Geological Survey Research 1960 ( Erickson, R.L., and Marrenzino,...