Fundy Basin

Approximately 220 million years ago, during the late Triassic period, the supercontinent Pangaea began to break apart.

The focus of the rifting began somewhere between where present-day eastern North America and north-western Africa were joined.

As the rift began to separate from mainland North America, volcanic activity occurred, forming volcanoes and flood basalts.

The rift valley eventually failed (see aulacogen) as the Mid-Atlantic Ridge continued to separate North America, Europe, and Africa.

Along these rifts, magmatic activity never stopped, as shown by the ongoing eruption of lava along the Mid-Atlantic Ridge.