Insular Plate Explained

The Insular Plate was an ancient oceanic plate that began subducting under the west-coast of North America around the early Cretaceous period. The Insular Plate had a chain of active volcanic islands that were called the Insular Islands. These volcanic islands, however, collided then fused onto the west-coast of North America when the Insular Plate jammed then shut down ending the subduction zone.^[1]

See also

• Insular Mountains

Notes and References

1. Web site: The Coast Range Episode . The Burke Museum of Natural History and Culture, University of Washington . Northwest Origins: An Introduction to the Geologic History of Washington State . 2002 . 12 August 2019 . Catherine L. . Townsend . John T. . Figge.