Geologic Map of Idaho National Recreation Area renowned for its copper and

renowned for its copper and molybdenum deposits

Etched on the Grand Canyon's steep walls are stories of how this majestic landscape came to be: stories of volcanic islands

low-sinuosity fluvial systems

how to record your findings

Geologic Map of Idaho National Recreation Area renowned for its copper andThe Geologic Map of Idaho brings together the extensive mapping and associated research since the previous statewide compilation published in 1978. Over ninety geologic resources were used to compile the map (see accompanying booklet). The northern and western parts of the state were compiled by R. S. Lewis; the eastern and southeastern parts were compiled by P. K. Link and S. P. Long. The geology was initially drafted at 1: 500,000 scale, scanned,