During the Pennsylvanian Period, the collision of North America and Africa resulted in the Alleghenian Orogeny and final assemblage of Pangaea. |
Alleghenian reactivation of the Acadian fold belt, Meguma zone, southwest Nova Scotia. |
The terrane is polydeformed by Acadian and Alleghenian tectonic pulses, presenting the full gamut of geologic mapping problems that must be addressed by GIS software. |