This geologic field-trip guide provides an overview of Quaternary volcanism in and around Lassen Volcanic National Park in northern California. The guide begins with a comprehensive overview of the geologic framework and the stratigraphic terminology o
Muffler, L. J. Patrick pmuffler@usgs.gov,Clynne, Michael A. mclynne@usgs.gov. Geologic field-trip guide to Lassen Volcanic National Park and vicinity, California. 2015-01-01.