What ocean basin was destroyed and finally had its last sliver obducted to make the ophiolite between the Humber Zone and the Gander Terrane?
A)Iapetus
B)Atlantic
C)Arctic
D)Fundy

Question

Quizplus · Accepted Answer

The Iapetus ocean basin was located between the ancient landmasses of Laurentia and Avalonia (which eventually collided to form what is now the Appalachian Mountains). It began closing during the Ordovician period and completely disappeared by the end of the Silurian period. The obduction of its last sliver (oceanic crust) between the Humber Zone and the Gander Terrane occurred during this process of closure, resulting in the formation of the ophiolite.

What Ocean Basin Was Destroyed and Finally Had Its Last