Structural geology of Mount Evan-Thomas

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Longtime reader and frequent contributor Howard Allen has three images to share with us today. Let’s see what he’s got…

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Oh my. What is that?

West ridge of Mount Evan-Thomas, Opal Range, Peter Lougheed Provincial Park, Alberta. View looking south across Grizzly Creek at structural features (yellow boxes outline detail images to highlight key features, shown in subsequent images). Rocks are Carboniferous (Mississippian) carbonates. Location is 50.7660, -115.1259. Photo taken in 1981.

Oooh! Exciting! Let’s zoom in.

Detail 1: Folds in subvertical bedding, carbonate rocks:

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Detail 2: High-angle reverse fault with drag folds:

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Great stuff. Thanks so much for sharing.

Thanks again for your contributions, Howard. I’m hoping we can see this site for ourselves this summer!

0 thoughts on “Structural geology of Mount Evan-Thomas”

  3. Welcome to the Rocky Mountains of Alberta. I did my undergrad near that location. Many others just as nice in my photoalbum.

    Reply

  4. Awesome and dramatic exposure/outcrop… Every time I see stuff like this I think, “How many #10 level earthquakes did it take to result in that position??” Just WoW!

    I hope you get to visit there Callan! Really enjoy your blog, it certainly adds to my continuing education via familiarization and interpretation:) Many Thanks!

    ~@ Walter- If you have more similar- Do send Callan some scans of your pics!

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  5. One can see similar sysmic folding nearer to where I live in the Southetn Sierra Nevada mountains, off US 395 and 14.

    Reply

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