What is the extent of the Cascade Range?
Several lofty volcanic peaks dominate the Cascade Range of the Pacific Northwest; the principal part of the range extends from Mount Garibaldi in British Columbia, Canada, to Lassen Peak in northern California, a distance of about 1000 miles. — From: Tilling, et.al., 1990, Eruptions of Mount St. Helens: Past, Present, and Future: USGS General Interest Publication, p.3., and Preparing for The Next Eruption in the Cascades: USGS Open-File Report 94-485 How many eruptions have there been in the Cascades during the last 4,000 years? Eruptions in the Cascades have occurred at an average rate of 1-2 per century during the last 4000 years, and future eruptions are certain. How many eruptions have there been in the Cascades during the last 200 years? Seven volcanoes in the Cascades have erupted since the first U.S. Independence Day a little more than 200 years ago. — From: Preparing for The Next Eruption in the Cascades: USGS Open-File Report 94-485 1. Mount Baker, Washington 2. Glacier Peak
