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

 

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