Department of Earth Science |Northeastern Illinois University

ESCI 121
Spring 2006

Daily Objectives #13 (February 28, 2006)                                                                        Dr. Sanders

By the end of today’s class, you should be able to do the following:

*  Describe the three major types of material that erupt from volcanoes: 1) lava, 2) pyroclastics, and 3) gas.

* Explain how the magma composition affects the "eruptive style" of a volcano, and how this is related to plate tectonic setting.

* Explain the four factors that control melting of rocks in various settings, and say how each influences whether or not magma will be produced:
       --composition      --decompressional heating
       --temperature      --shifting of the melting curve due to introduction of water (volatiles)

* List the major types of volcanoes and explain the plate tectonic settings in which they form.

Department of Earth Science | Northeastern Illinois University

© 2006 Laura L. Sanders.  Last updated February 28, 2006.