Pennsylvanian Pottsville Formation
Pennsylvanian Appalachian Barrier Facies Road cuts on I. 75 16 miles west of Jellico, Tennessee of exposures of Pennsylvanian Pottsville Formation quartzarenites that accumulated on flood tide delta lobes and tidal channels.
These sandstone representing back barrier islands or offshore bars reworked on their landward side by the flood tides. Some pebbles suggest a nearby river source. One mile northwards are cut-and-fill features developed in uniform sheets characterized by cross-beds, which may indicate a flood delta depositional setting. Two miles northwards are shales that represent a lagoonal setting.
Images in this gallery were photographed by Christopher Kendall using a digital Nicon Coolpix camera.
Tuesday, September 17, 2013