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.
![](https://bunny-wp-pullzone-5vqgtgkbhi.b-cdn.net/wp-content/uploads/2023/04/Norphlet-Formation-Core.jpg)
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.