PubTalk 1/2012 — Lassen Volcanic National Park

--a wonderland of volcanoes and thermal features

By Patrick Muffler, Geologist Emeritus

• Lassen Peak, the southernmost active volcano in the Cascade Range,explosively erupted in 1915, devastating nearby areas and raining volcanic ash as far away as 200 miles to the east
• Lassen National Park, in addition to prominent volcanic areas,contains the most spectacular array of thermal features in the Cascade Range including fumaroles, bubbling mud pots, and a boiling lake
• A new USGS map shows volcanic centers in unprecedented detail,enabling development of products to better evaluate and assess regional volcanic hazards