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Rock Formations
Middle TN - Catheys

Field Guide to outcrops include:


The Cathey Formation is part of the Nashville Group of rocks, and is dated to the Late Ordovician Period.

A complex mixture of shaley limestone units. Tipically it is thin bedded, blue gray nodular limestone, interbedded with thin partings of sale and siltstone. Weathers to thin silty soil usually 3 to 4 feet thick. Outcrops extensively in Central Basin.

- H.R. Beaver,
geological engineer