The Fossilized Sequoias and Outstanding Geology of Malm Gulch, Idaho

Take a hike with geology professor Shawn Willsey as he guides you through the awesome geology and scenery of Malm Gulch near the Salmon River in central Idaho. Investigate ancient folded rocks, huge river cobbles, volcanic mudflows, and the stately petrified sequoias of this area.

0:00 Intro, Stop 1
01:44 Diagram of Challis volcanics setting
04:46 Silurian limestone
05:22 Unconformity
08:46 Stop 2, tuff
10:24 Charcoal in tuff
10:40 Fault surface (slickensides)
11:20 Eocene setting
12:11 Fossilized sequoia

You can order SIGNED copies of my book that covers this area: Geology Underfoot in Southern Idaho (a whole chapter on Malm Gulch). Also available is Roadside Geology of Idaho. Purchase both here:
https://shawn-willsey.square.site/ or through Amazon

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Shawn Willsey
College of Southern Idaho
315 Falls Avenue
Twin Falls, ID 83303