Igneous...
Photos of Volcanic Rocks and Features

Click on any of the photos below to see the image at a larger size and read a more descriptive caption.

Stratovolcano, Mt. Rainier, WA.	Mt. St. Helens, Mt. Rainier, WA.	Cascade Volcanoes, Oregon.
Crater Lake Caldera, Oregon.	Echinus Geyser, Yellowstone NP.	Columnar jointing in basalt.
L to R: rhyolite, andesite, basalt.	Shield Volcano, Mauna Loa, Hawaii.	Cinder Cone, Mojave Desert, CA.
Pahoehoe lava flow, Hawaii.	Photomicrograph of basalt.	Pillow basalt, Lopez Island, WA.

Move to Intrusive Rocks and Features

Return to Igneous
Return to Images
Return to Home Page