Image: 1907KelloggIdaho geologicmap
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Description: 1907 Kellogg Idaho geologic map, where m is monzonite and syenite, Ap is Prichard Slate, Ab is Burke Formation, Ar is Revett Quartzite, Asr is St. Regis Formation, Aw is Wallace Formation, Asp is Striped Peak Formation, Tg are Tertiary terrace gravels, Qgl is Quaternary glacial deposits, Qal is Quaternary alluvium, x is a prospect pit and y is a tunnel
Title: 1907KelloggIdaho geologicmap
Credit: The geology and ore deposits of the Coeur d'Alene district, Idaho, USGS Professional Paper 62, https://pubs.er.usgs.gov/publication/pp62
Author: U.S. Dept. of the Interior, USGS, F. L. Ransome and Frank Cathcart Calkins
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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