The Geology and Petrography of Crater Lake National Park, Bände 1-4

adjacent Agiapuk andesite argillites augite basalts bed rock belt calcite CALIFORNIA carry Cascade Range chiefly chloritic claim claim.-This Coast Range color copper pyrite country rock Crater Lake Creek crest crystalline limestone crystals dacite deposits Devonian dikes diorite east feet B. M. feldspar flow foliation geologic glacial glass granite gravel Gravina Island greenstone greenstone-schist groundmass hornblende hypersthene Inlet intrusive iron pyrite Kasaan Ketchikan Ketchikan district Ketchikan series Kugruk Kuzitrin lava limestone Llao Rock localities located magnetite Mesozoic metamorphism microlites miles mineralized zone Mount Mazama Mountain occur olivine Paleozoic parallel Peninsula phenocrysts phyllites plagioclase plateau porphyritic Port Clarence portion Prince of Wales probably pumice quartz quartz veins region River schist schistose shear slates slope southeastern Alaska southern specimens surface Survey thickness thin section timber tunnel U. S. Geol Vallenar valley volcanic Wales Island Wales series width writer