Statistical tables and charts showing geochemical variation in the Mesoproterozoic Big Creek, Apple Creek, and Gunsight formations, Lemhi group, Salmon River Mountains and Lemhi Range, central Idaho

Lindsey, David A.; Tysdal, Russell G.; Taggart, Joseph E., Jr.

Abstract:

The principal purpose of this report is to provide a reference archive for results of a statistical analysis of geochemical data for metasedimentary rocks of Mesoproterozoic age of the Salmon River Mountains and Lemhi Range, central Idaho. Descriptions of geochemical data sets, statistical methods, rationale for interpretations, and references to the literature are provided. Three methods of analysis are used: R-mode factor analysis of major oxide and trace element data for identifying petrochemical processes, analysis of variance for effects of rock type and stratigraphic position on chemical composition, and major-oxide ratio plots for comparison with the chemical composition of common clastic sedimentary rocks.

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USGS Numbered Series

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39884

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Lindsey, David A.; Tysdal, Russell G.; Taggart, Joseph E., Jr.

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ENGLISH

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68 p.

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Open-File Report

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OFR

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2002-310

Citation Search Results Text:

Statistical tables and charts showing geochemical variation in the Mesoproterozoic Big Creek, Apple Creek, and Gunsight formations, Lemhi group, Salmon River Mountains and Lemhi Range, central Idaho; 2002; OFR; 2002-310; Lindsey, David A.; Tysdal, Russell G.; Taggart, Joseph E., Jr.