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6 November 2015
Another image from northern India’s Himalayas, courtesy of Martin Schmidt: The “intestine-like” aspect of this fold has a descriptive adjective in geology: ptygmatic. Gorgeous! Thanks for sharing, Martin. Happy Friday!
30 October 2015
My colleague Martin Schmidt of the McDonogh School, who I know through the National Association of Geoscience Teachers eastern section, recently shared a bunch of fold photos with me. They have a “dated” feel because they were originally shot on slide film, but the folds themselves of course are timeless. I’ll be featuring a bunch of them here in the weeks to come. Here’s a scene Martin captured in northern …
17 March 2012
One of Callan’s former advisers, Dave Lageson of Montana State University, heads to the summit of the world’s tallest mountain with his graduate student, the accomplished mountaineer Conrad Anker.
25 August 2010
One of the stops my Rockies students and I made this summer was a dinosaur paleontology tour through the Two Medicine Dinosaur Center in Bynum, Montana. The folks there are very accommodating, and at my request gave the class a bit of stratigraphic context for the dinosaur fossils. For instance, we visited the geologic formation which underlies the dinosaur-bearing Two Medicine Formation: it’s a beach sandstone called the Virgelle Formation. …
24 February 2010
Earlier in the month, during the big snowstorms, my window got plastered with snow. This snow formed a vertical layer which then deformed under the influence of gravity. Looking at it through the glass, I was struck by how it could serve as a miniature analogue for the deformation typical of a mountain belt. Let’s start our discussion by taking a look at an iPhone photograph of the snow: So …