Index map
The great length and strong north-south linearity of the Cascade Range, a narrow yellow band extending from southern Washington to northern California, contrasts sharply with the varied directional trends of other mountain groups to the east and northeast. The Cascades arose through the plate collisions that have enlarged the western continent in Tertiary-to-Holocene time. This mountain range contains such large and geologically recent active volcanoes as Rainier, Hood, and Shasta. |
