The sandstone layers typically weather to a medium-light gray outcrop.
On freshly broken surfaces the sandstone varies from white through
shades of tan and reddish brown. The red tints are due to iron oxide
within the cement that holds the sand grains together (Figure 1).
Textures within the sandstone layers such as cross-bedding, ripple
marks, and mud cracks, are clues to the origin of the layers as
shallow, intertidal or delta sediments (Figures 2 - 4).