Geologic Map of the Butte City 7.5' Quadrangle, Butte County, Idaho
IDAHO GEOLOGICAL SURVEY TECHNICAL REPORT 20-04 BOISE-MOSCOW IDAHOGEOLOGY.ORG HELMUTH AND OTHERS CORRELATION OF MAP UNITS EXPLANATION of MAP UNITS Paleozoic strata of the southern Arco Hills Scot Peak Formation (upper Mississippian)–Medium gray, silty, sandy, with gray to orange Geologic Map of the Butte City 7.5' Quadrangle, Butte County, Idaho Names, unit abbreviations, and unit colors have been adopted from the previously published maps, “Geologic Msp map of the Craters of the Moon 30'x60' quadrangle, Idaho”: USGS Scientific Investigations Map I-2969, scale chert, thin- to thick-bedded, ledge- to cliff-forming limestone; weathers light gray with scalloped by Alluvial and Colluvial Deposits 1:100,000, by Kuntz, M.A., Betty Skipp, D.E. Champion, P.B. Gans, and D.P. Van Sistine, 2007, and “Geologic texture. Abundant fossils include crinoids and rugose corals among fossil hash. Gradationally 1 1 2 3 Map of the Arco 30'×60' quadrangle, south-central Idaho”, by Skipp, Betty, L.G . Snider, S.U. Janecke, and M.A. underlain by the Middle Canyon Formation; estimated thickness of 150 m in the southern Arco Samuel L. Helmuth , Evan J. Martin , Mary K.V. Hodges , and Duane E. Champion Lava Field, Cones, Kuntz, 2009, Idaho Geological Survey Geologic Map G M-47, map scale 1:100,000. Names for lava fields are Hills (Skipp and others, 2009). and Eruptive-Fissure derived from titled vents and buttes on the 1:24,000-scale topographic base map or from named vents on 1 National Association of Geoscience Teachers/U.S. Geological Deposits adjacent quadrangles.
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