Summary of the Eruptive History of Mount Mazama

Bacon Charles, U.S. Geological Survey

This site features a detailed table, excerpted from a paper by Charles R. Bacon (USGS), summarizing the volcanic history of Mount Mazama and Crater Lake Caldera, Oregon. Descriptions of the major volcanic units are given in reverse chronologic order together with their age, age control, and composition.

This resource is referenced here:
Subject: Geoscience:Geology