Original horizontality relative dating
These principles would be able to provide information not only on separate layers, but on the initial layer, as well.
Possibly one of the greatest stratigraphic rock formations is the Grand Canyon.
These changes are consistent around the world, and allow geologists to determine what stratigraphic layers they might be examining by simply looking at fossils.
These strata make up much of the famous prominent rock formations in widely spaced protected areas such as Capitol Reef National Park and Canyonlands National Park.
In cases were disturbances are suspected, geologists will have to determine what the original layering was by attempting to date the rocks.