ATM 200 - Natural Disasters

Ch 6 – Volcanic Eruptions:

Plate Tectonics and Magmas

Wednesday, 21 October 2015

Daily Announcements:

1) Exam #2 is Monday, Nov. 2. (Bring #2 pencils, pencil sharpener, eraser.)

2) Exam #2: Ch. 2, 3, 4, 5, 6, 7 and lecture material (videos too!)

3) Sub-Topic Voting open from today through Monday, Oct. 26.

Song #1: “Great Balls of Fire” by Jerry Lee Lewis

Song #2: “Plinian” by Meredith Bragg

Text Source Today: Chapter 6 (p. 157-172)

· Volcanic Explosivity Index: VEI Notes Template

· The “Three Vs” of Volcanology PDF DOC

· Shield Volcanoes: Hawaiian & Icelandic Volcanism & Climate

· Flood Basalts

· Scoria Cones: Strombolian

· Stratovolcanoes: Vulcanian & Plinian

· Lava Domes and Calderas: Ultra-Plinian

· Volcanism and Climate

Study Guide Material (Stacey’s Guide) :

1) What is the “VEI” and what factors are included?

2) What are the “Three Vs” of volcanology?

3) Describe a shield volcano. Distinguish between Hawaiian and Icelandic types.

4) Describe a flood basalt. What are these eruptions linked to in the past?

5) Describe scoria (cinder) cones. What is a Strombolian type?

6) What is the most active volcano on Earth and where is it located?

7) Describe a stratovolcano. Distinguish between Vulcanian and Plinian types.

8) Why is a pyroclastic flow so deadly? What is, and what causes, a lahar?

9) Describe a lava dome and its role in a major eruption sequence.

10) Describe a caldera. What is meant by a “resurgent caldera?”

11) What is an Ultra-Plinian eruption? Give some examples.

12) What is the worst-case scenario for volcanic effects on climate?

13) †Which continent has the most hot spots beneath it?