Then
Now
Change Over Time
Looking west around 400 Ma from the current location of Mt. Pollux the view would have been of tall Alps-like mountains which preceded the Berkshires. Western Massachusetts was covered by the Taconic Highlands created during the Taconic and Acadian orogenies.
The first orogeny began around 515 Ma when the first peri-Godwanan terrane (“Moretown”) collided with the North American continent, Laurentia. This created the “Iapetan Suture” which runs north-south, somewhat east of the present Berkshires spine.