How Old is "Cinder Cone" - Solving a Mystery in Lassen Volcanic Park, California

Abstract

This United States Geological Survey (USGS) on-line publication highlights the controversy surrounding the age of Cinder Cone volcano in Lassen Volcanic National Park. This report follows the beginning of the controversy in the 1870s through recent discoveries about when the volcano was formed. Early geologic studies are covered, as well as the recent findings through paleomagnetism, field and laboratory work and by reinterpreting data from previous studies. Educational levels: High school, Undergraduate lower division, Undergraduate upper division