Geologic Map of Idaho National Recreation Area In Essential Survival Gear

In Essential Survival Gear

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

renowned for its copper and molybdenum deposits

how to record your findings

low-sinuosity fluvial systems

Geologic Map of Idaho National Recreation Area In Essential Survival GearThe 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,