Faulting at Devils Slide
The opening of the tunnel around Devil’s Slide in San Mateo County allowed for the creation of a mile-long trek to look at some of California’s fascinating geology. In my last geology hike to the trail, I took a photo of the great sedimentary layers at the north end of the trail, then edited the photo to show how well the strata line up on each side of a fault through the sediments. Mouse over the image below to see the image of the current conditions of the strata.
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The video below includes a great description of the geology of the area. Click on the “Sedimentary Layers” link to see the main section on the geology.
More resources on the geology of Devil’s Slide:
- San Mateo County Parks: Devil’s Slide Trail (includes half-hour video)
- KQED Quest: The Rock’s of Devil’s Slide (March 2013)
- Civil + Structural Engineer: Devil’s Slide Tunnel (June 2013)
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Good photo. And nice website. Thanks for sharing.
Thank you bunches for always sharing!!!!!!!!
Hey, there. I teach fossils to third graders. Do you have any thoughts on where there’s a close and safe place to take them where they can find some?
I’ll look into this. Are you looking for fossils students can “take home,” or ones that they can see in rocks and leave behind. I recall several places in the Bay Area where you can see fossils (generally shells in rocks), but not really any places they can “rock hound” and take them home. I’ll look this up and add more in a few days.