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16 April 2012

Sharing the M.A.G.I.C.

Last Thursday, my colleague Jim Buecheler and I took two students (Robin Rohrback and Alan Pitts) down to Charlottesville, Virginia, for a meeting at the state geological survey. The Department of Geology and Mineral Resources sponsors an annual one-day symposium on Virginia geology that I’ve participated in two or three times before. Last year I gave a talk, at the request of state geologist David Spears. This year, I gave …


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20 February 2012

Mystery rock

Here’s a mystery rock that’s just aching to have its identity be crowdsourced: I got these photos from Rick Diecchio of George Mason Univerisity, who got them from a local fellow who dug it up in his yard in Dale City, Virginia. Rick says: I was stumped at first, but the more I look at it, the more I think it’s a lightning strike into sand or more likely sandstone, …


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21 November 2011

Compton Peak columns

Callan and three students visit a world-class outcrop of columnar jointing in Shenandoah National Park.


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