Licking Run is a tributary of Beaver Run in Richland Township and Quakertown in Bucks County, Pennsylvania in the United States.
Licking Run Creek, Memorial Park, Quakertown, Pa. postcard
Argillite
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Argillite is a fine-grained sedimentary rock composed predominantly of indurated clay particles. Argillaceous rocks are basically lithified muds and oozes. They contain variable amounts of silt-sized
A piece of black argillite from Haida Gwaii, Canada
Grey chunks of graptolitic argillite on Pakri Peninsula, Estonia; yellowish and white chunks are limestone