3. Examine the picture to the right of Lassen Peak and answer the following ques

Question

3. Examine the picture to the right of Lassen Peak and answer the following questions: i. What plate boundary does this volcano form i.What continental volcanic arc does this volcano form? What type of eruption style of these volcanoes? iv Lassen Peak is a NOT a composite volcano. What type of volcano is Lassen Peak? v. Describe the likely composition and viscosity of the magma? Composition Viscosity: 4. Examine the picture to the right of Skjaldbreidur volcano on Iceland to answer the following questions i. What zone of volcanism does this volcano originate from? ii. What type of eruption style does this volcano produce? i What are two volcanic eruption products that citizens should be concerned about the most? 2009 AN

Explanation / Answer

3. i) Convergent plate boundary. There is subduction of The Gorda Plate under the North American Plate north of Cape Mendocino

ii)  Cascade Volcanic Arc

iii) explode violently, releasing a huge amount of hot rock and ash.

iv) Lava domes. Since the lava is small and very viscous.

v) Composition: High silica content Viscosity: high

Please ask the rest of the question in separate questionnaire.

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