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25 April 2018

Natural Bridge State Resort Park, Kentucky

A visit to a natural sandstone arch (or “bridge” as the locals call it) in eastern Kentucky yields unexpected bonuses, like fossil wood, Liesegang banding, and the honeycomb-like weathering pattern called “tafoni.”

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13 April 2018

Friday fold: Blue Ridge gneiss in the University of Kentucky rock garden

The Friday fold is on display in a rock garden outside the Department of Earth and Environmental Sciences at the University of Kentucky.

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10 April 2018

An outcrop showcasing a strand of the Kentucky River Fault System

Roadcuts in Kentucky show Ordovician limestones of two distinct types, replete with fossils and primary sedimentary structures, and juxtaposed by a fault, one strand in the Kentucky River Fault System.

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9 April 2018

Orthocone nautiloids of the Lexington Limestone

I took a trip last week to Kentucky. My colleague Kent Ratajeski from the University of Kentucky took me out on a nice all-day field trip to examine some of the local geology. I was particularly impressed with the large straight nautiloid fossils that abounded in the Ordovician-aged Lexington Limestone. Here are a series of photos I took of these orthocones, all on pavement exposures (horizontal bedding planes) with my …

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