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General Information

Title: Mississippian and Devonian stratigraphy of northwestern Montana
Author(s): Sloss, L.L., and Laird, W.M.
Publishing Organization: U.S. Geological Survey
Series and Number: Oil and Gas Investigations Chart OC-15
Publication Date: 1945
Map Scale: 1:905,143
Cross Section: None
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Geologic units referred to in Geolex

Dean Lake, Hannan, Rooney, Silvertip

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U.S. Geological Survey

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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.

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Page Last Modified: Tue 04 Jun 2024 05:07:35 PM MDT