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You are browsing the archive for 2011 November 15.

15 November 2011

Fall colors

Happening on campus, right now:

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Skolithos in the sun

Today, I share with you eight images that I took yesterday on Skyline Drive in Shenandoah National Park: Blocks of Antietam Formation quartzite (meta-quartz sandstone) of Cambrian age, used in the low rock walls of an overlook parking pull-out. They all bear lovely Skolithos trace fossils (seen end-on, and in cross-section):

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