Examples of composite volcanoes, also called stratovolcanoes, are Mount Shasta in California, Mount St. Helens and Mount Rainier in Washington state, and Mount Fuji in Japan. Cross-section of a composite volcano. ID Scott Hughes photo Volcanic Domes comprise the third primary type of volcano. Volcanic domes are typically small. Some are subject to explosive blowouts during dome building processes.
Domes commonly occur adjacent to or within craters of composite volcanoes.
Other domes begin as shallow laccolithic intrusions that grow and expand beyond subsurface confinement. Those of us living in the Pocatello, Idaho, area are able to see examples of such volcanic domes. Big Southern Butte and East Butte on the Snake River Plain are two excellent examples. List and briefly describe the primary and secondary environmental effects of each eruption. There are parts of the world covered by thousands of square kilometers of thick basalt lava flows called Flood Basalts .