Saturday, August 22, 2009

Sideling Hill Road Cut

We have driven from southeastern Missouri to Pennsylvania in two days.

On the last leg of the trip, driving across far northern Maryland on I 68, across the dramatic folding of the Appalachian Mountains, we found this huge road cut.

Here are multiple layers of sedimentation laid down 330-345 million years ago, covered by many later layers, hardened into sedimentary rock, folded, eroded, and now, lucky for us, revealed in this huge road cut.

Here's a good site for an explanation of this place:

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