23 March 2018
Friday fold: Snow day edition
Posted by Callan Bentley
We’ve had a lot of time off from work and school this week thanks to a late-winter snowstorm.
There have been some fun examples of post-snowfall deformation that resulted. Here’s one from my kid’s playground slide:
I posted this on Twitter the other day because it reminded me so much of a detachment fault, a big slab of snow detaching and sliding downhill under the influence of gravity. I like the little tear faults along the edges, too.
Kathy Benison, a geologist at West Virginia University, responded with this example from a car, where the snow slab has curled itself up into a “jellyroll” structure.
And Brian Romans, a geologist at Virginia Tech, replied with this example that shows a really well developed set of folds at the base of another playground slide:
Brian wrote this one up on his (now hibernating) blog:
Snow is so great — not only for getting unexpected days off from work, but also for these serendipitous analogue deformation experiments.
Have a happy Friday all!
Quite a few years ago a structural geologist from Georgia State published a photo of a snow layer folding down off the windshield of a VW. I think in JGE.