Chilliwack batholith

The Chilliwack Batholith is a large batholith that forms much of the North Cascades in southwestern British Columbia, Canada and the U.S. state of Washington.

The geological structure is primarily named after the City of Chilliwack, where it is the most notable geological feature.

The Chilliwack Batholith is part of the Pemberton Volcanic Belt and is the largest mass of exposed intrusive rock in the Cascade Volcanic Arc.

The age of the Chilliwack batholith ranges from 26 to 29 million years old.