Ch05clickerquestions

Ch05clickerquestions - 05.01 Which of the following best...

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1. A cinder cone composed mostly of basaltic magmas. 2. A shield volcano composed mostly of andesitic magma. 3. A composite or stratovolcano composed of lavas and pyroclastic debris. 4. A large shield volcano composed of mostly basaltic ash and other pyroclastic debris. 05.01 Which of the following best describes Mt. St. Helens?
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1. Intrusion of basaltic magma causes deep crustal rocks to melt, producing andesitic or rhyolitic magmas. 2. Intruded rhyolite magma causes basalt magma to form by melting of granite. 3. Intrusion of diorite magma causes basalt magma to melt from peridotite. 4. All of the above correctly describe the process. 05.01 Pockets of magmas can be formed by the melting of deep continental crust heated by the intrusion of other magmas. Which of the following correctly describes this process?
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1. Decompression melting is probably the main process producing magmas at divergent plate margins such as oceanic ridges.
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This note was uploaded on 04/09/2008 for the course GEOL 101 taught by Professor Olinsky during the Spring '08 term at Texas A&M.

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Ch05clickerquestions - 05.01 Which of the following best...

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