A Few Example Questions

1. Describe what is meant by a "surtseyan" eruption. How can you recognize the deposits produced by surtseyan eruptions in the ancient rock record?

2. How do viscosity and density of magma change as it evolves from basalt through rhyolite?

3. Use sketches and description to show the difference between newtonian and bingham magmas through a dike.

4. Describe the progress of the May 18, 1980 eruption of Mt. St. Helens.