23 April 2012
GMU structural geology students admire Compton Peak columns
Posted by Callan
Last Saturday, before the rains moved in…
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GMU structural geology students admire Compton Peak columns4 Comments
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About Callan
Callan Bentley is an assistant professor of geology at Northern Virginia Community College in Annandale, Virginia. He is particularly interested in structural geology and the evolution of the Appalachian mountain belt. Callan draws cartoons and writes for EARTH magazine. He lives in the Fort Valley of Virginia.Other AGU Blogs
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dr-dave said on 24 April 2012
Hmmm…hard hats might be in order when sitting under an overhanging cliff?
Callan said on 24 April 2012
A good point – leave it to you to notice the potential for rocks to fall!
Doug said on 20 November 2012
My friend Jeff and I looked at this Sunday and loved it. Were these formed vertically and then fell over? Some of them appear mashed.
Callan said on 20 November 2012
Cooling columns form perpendicular to cooling fronts, and since most lava occurs in sheet-like horizontal flows, most columns are more or less vertical. So yes, post-formation tilting makes sense to me.