Younger rock units, if they ever existed, have been removed by erosion.

The nomenclature of the rock units here may not represent the present consensus.

Extension causes the rock units as a whole to become longer and thinner.

These sediments are deposited on the rock unit that is going down.

The characteristics of the rock unit come from the depositional environment and original composition.

Depending on the nature of the rock units involved, structures may be better expressed in either the gravity or the magnetic data.

The source for the uranium were most likely volcanic rock units in the area.

This rock unit dates to the late Aptian stage, approximately 115 million years ago.

Another is to find rock units of the same age and type that split apart as the supercontinent broke up.

The rock units within this arch have been major oil producers.