Perfect for a late-breaking #Strataday post!
Reposted from D. Randy Blood
Here is a big unconformity in KY where Upper Devonian deposits sit on Silurian deposits. This outcrop also shows the complex relationships of facies and time. The Olentangy and Huron Shale here is a full 3 million years younger than the rocks of the same name in Ohio.

#geology #geoscience

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