Before revision: The location of the Cobb hotspot that gives rise to these seamounts is 46° N -130 ° W. The Pacific plate is moving to the northwest over the hotspot, causing the seamounts in the chain to decrease in age to the southeast.
After revision: The location of the Cobb hotspot that gives rise to these seamounts is 46° N —130 ° W. The Pacific plate is moving to the northwest over the hotspot, causing the seamounts in the chain to decrease in age to the southeast.