Strato/Composite Volcano

Definition: A stratovolcano, also called a composite volcano, is a tall, conical volcano composed of many layers of hardened lava, tephra, and volcanic ash         

 Additional Information: These volcanoes are characterized by a steep profile and periodic, explosive eruptions. The lava that flows from them is viscous, and cools and hardens before spreading very far. The source magma of this rock is classified as acidic, having high to intermediate levels of silica (as in rhyolite, dacite, or andesite)   

Click here to go to wikipedia "stratovolcano" 

   This is a picture of the strato volcano, mt. Saint Helens

 This picture was taken from Wikpedia "stratovolcano" on the english wiki search, keyword: sratovolcano.

 Relation to Class Labs: This term applies to our class lab on erosion,deposition, and mapping the surface of a planet, because volcanos can be used to tell information about a planet's core and inner surface. A volcano's location can tell if a riverbed was made from water (like a river or stream) or a previous lava flow.

Resources: "statovolcano." Wikipedia. 2008. Wikimedia Foundation, Inc. . 31 Jan 2008 <http://en.wikipedia.org/wiki/Composite_volcano>.  (some underlined words will take you to that word's Wikipedia page)