Bulletin of the United States Geological SurveyThe Survey, 1956 - Geology |
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aerial photographs Ankerite anticline argillaceous argillites axial plane axis Belt series Big Creek Boyd Mountain anticline Burke and Revett Calkins and Jones chalcopyrite chlorite Clark Fork River Coeur d'Alene district color Deer Creek deformation deposits diorite displacement east eastward exposed in road feet thick Flat Rock syncline Fork of Big fractures galena geologic Gilt Edge fault gray Idaho interbedded large fault lineament lineation Lookout Pass Meadow Mountain Middle Fork Mont Montana Mount Bushnell Mountain fault Mullan Osburn fault zone outcrop overturned folds Packer Creek phyllite Prichard formation pyrite quartz quartzite beds Regis formation Regis River Revett formations Revett quartzite road cuts Saltese Savenac Creek Savenac syncline sediments sericite siderite Silver Cable Silver Creek fault southwest sphalerite strike strike-slip structural suggests Swamp Creek Tamarack Creek tetrahedrite thinly laminated tion trend Twelvemile Creek Twelvemile fault typical veins vitreous quartzites Wallace formation Ward Creek western Mineral County Wishards sill