Toroweap Formation
The Toroweap formation is made up of darker gypsum, shale, and limestone. There are erosion-resistant areas made of sandstone that can cause different shapes to form in the canyon. It was formed from being deposited in a sea, as its shoreline invaded and retreated over the land. Now, if forms many edges and cliff-like landforms. The layer contains both sandstone and limestone. This indicates that it was coastal and submerged in the water.
The formation and the layers are dated to around 260 million years in the Late Early Permian.
The color is a yellow-grey and the formation creates different cliffs and edges.
The color is a yellow-grey and the formation creates different cliffs and edges.
The fossils that can be found are: Brachiopods, coral, mollusks, sea lilies, worms and fish teeth, and other terrestrial plants.