Volcanoes. Cinder Cone Volcano Shield Volcano Composite Volcano. Cinder Cones. A type of volcano made of many layers of broken rocks and ash. Wizard Island found in Crater Lake and Lava Butte in Oregon are examples. Simplest type of volcano.
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A type of volcano made of many layers of broken rocks and ash. Wizard Island found in Crater Lake and Lava Butte in Oregon are examples.
This volcano is made from many layers of lava. This lava was very fluid when it flowed out of the volcano. These volcanoes have very large bases. Most Hawaiian volcanoes are this type.
This volcano is made of alternating layers of ash and lava. They are very explosive volcanoes. Mt. St. Helens and Mt. Rainier is this type.
Crater Lake is a caldera, the remains of an ancient Pleistocene volcano named Mt. Mazama. The caldera was formed when Mt. Mazama violently erupted some 7600 years ago, causing the entire top of the mountain to fall in on its self. Once it collapsed and sealed, snow melt and rain filled the caldera, and formed what we know now as Crater Lake.
Earthquake: A sudden violent movement of the earth's crust caused by the release of stress faults or by volcanic activity.