Lithosphere

Question

What is the age of the lithosphere that is subducting beneath the Pacific Northwest?

Answer 1

Hi Emily.  This map should help you!  http://www.ngdc.noaa.gov/mgg/ocean_age/data/2008/ngdc-generated_images/whole_world/2008_age_of_oceans_plates.pdf

 

Think of how close the Juan de Fuca plate is to the spreading center where it was formed on its western margin...