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You are browsing the archive for 2012 May 04.

4 May 2012

Friday fold: ball & pillow in volcanic ash

Another guest Friday fold – this one supplied by Ander Sundell of the College of Western Idaho, and his student Katie Ursenbach, who took the shot and gave permission for me to re-post it here. You’re looking at cuspate-lobate folds due to primary sedimentary settling. the Snake River Canyon in southwestern Idaho. A pile of volcanic ash erupted into water in the Paleogene, and soon after covered by a series …

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Geese at NOVA

A couple of visitors above the entrance to my building on campus today: They’re honking greetings to all the students showing up for 8am exams…

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