It preserves fossils dating back to the latest Pragian and Emsian of the Devonian period.

[1] The Campbellton Formation is the southernmost representative of the Gaspé Sandstones group[2] and can be divided into 6 facies associations (restricted lacustrine, marginal lacustrine, near-shore lacustrine, coastal-deltaic, sandy to gravelly alluvial plain, and gravelly proximal alluvial environments), and is nearly a kilometer thick.

[1] Lacustrine facies are prevalent in the lower parts of the eastern belt (representing a large open lake) while upper parts of the formation are dominated by alluvial facies (representing an eastward-flowing axial braided river system).

This article about a specific stratigraphic formation in Canada is a stub.

You can help Wikipedia by expanding it.This article related to the Devonian period is a stub.