There is an unconformity that separates the Moenkopi and the…

There is an unconformity that separates the Moenkopi and the Chinle formations (see image below). What kind of unconformity is it?Tip: Utilize the principles of superposition and original horizontality to help you. Look at the orientation of the layers below the line and consider the depositional environment of the Chinle fm

The image below illustrates the stratigraphic column of the…

The image below illustrates the stratigraphic column of the western interior during the Cambrian period (~540-480 Mya). How did the landscape change over the time period recorded in this sequence?Note: The Bright Angel Fm is shale; the Supramuav is limestone; Tapeats is a medium-grained, thin-bedded sandstone. The numbers represent thickness-you can ignore them.