The range gives the name to the Nikanassin Formation, a stratigraphical unit of late Jurassic age that has its stratotype in this region.

We come therefore to the problem of defining the individual stratigraphical unit, which is the basis of nearly all our troubles.

Let us consider the concept of the stratigraphical unit in historical terms that can be more easily appreciated than the unimaginable vistas of geological time.

The two younger stratigraphical units can be found in crater sized spots on the Moon.

Eight unconformity-bounded Palaeozoic stratigraphical units are depicted on the main map, plus several Precambrian tectonostratigraphical packages.

This database will eventually hold information on all the stratigraphical units (and their interrelationships) that are shown on BGS maps.

The Nikanassin Formation is a stratigraphical unit of late Jurassic age.

The range gives the name to the Palliser Formation, a stratigraphical unit prominently featured in the mountains of this range.

The Cadomin Formation is a stratigraphical unit of early Cretaceous age.

The town also lends its name to the Viking Formation, an oil bearing stratigraphical unit.