The book describes the in intriguing geology and geologic evolution of Lassen Volcanic National Park and surrounding areas, providing an up-to-date source of ge

Volcanoes are essential elements in the delicate global balance of elemental forces that govern both the dynamic evolution of the Earth and the nature of Life i

The 1980 eruption of Mount St. Helens caused tragic loss of life and property, but also created a unique opportunity to study a huge disturbance of natural syst