Late Jurassic |
Chinle
sediments indicate river floodplains |
Moenave
sediments record arid coastal plain |
Kayenta
sediments indicate coastal plain |
Navajo
sandstone represents vast sand sea |
Erosion
of Navajo sandstone |
Erosion
of Carmel Formation as sea withdraws |
Carmel
limestone indicates shallow sea |
Morrison
formation represents floodplain environments |