The Rhems Formation is considered part of the Black Mingo Group.

It was named after Rhems, SC which is located five miles from the type locality at Perkins Bluff.

The unit is a light gray to black shale interlaminated with thin seams of fine-grained sand and mica with some layers partially silicified.

It preserves fossils dating back to the Paleogene period.

This article about a specific stratigraphic formation in South Carolina is a stub.