Norphlet Formation Sandstone

This image of a slabbed core of the Jurassic Norphlet sandstone shows distinctive striations. The clear demarcation separating the two sets of unidirectional lines indicates a change in angle of deposition of the sand that later formed the rock.

Norphlet Formation sandstone geological sample from Alabama
Reprinted by permission of Jim Lacefield
Norphlet Formation sandstone geological sample from Alabama