Orofino Creek, Pierce City, Pierce City District, Clearwater Co., Idaho, USA
|Latitude & Longitude (WGS84):||46° 28' 34'' North , 116° 15' 14'' West|
|Latitude & Longitude (decimal):||46.47611,-116.25389|
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3 valid minerals.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
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|Cretaceous - Permian|
66 - 298.9 Ma
|Riggins Group, Orofino series, and related rocks|
Age: Phanerozoic (66 - 298.9 Ma)
Stratigraphic Name: Riggins Group
Description: Metasedimentary and metavolcanic schist, gneiss, amphibolite, and marble, all of uncertain age, along eastern margin of island-arc complex; typically hornblende-rich. Includes Pollock Mountain amphibolite southeast of Riggins and gneiss of Swiftwater Creek near Lowell. (Mesozoic-Paleozoic Rocks of the Blue Mountains Island-Arc Complex).
Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. 
1000 - 1600 Ma
|Wallace Formation, gneiss, quartzite, and schist|
Age: Mesoproterozoic (1000 - 1600 Ma)
Reference: Zientek, M.L., P.D. Derkey, R.J. Miller, J.D. Causet et al. Spatial Databases for the Geology of the Northern Rocky Mountains - Idaho, Montana, and Washington. U.S. Geological Survey Open-File Report 2005-1235 Version 1.0.