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Volcanoes_NOTES.docx - EES:1030 - Volcanoes Study Guide...

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EES:1030- VolcanoesStudy Guide Questions1.What happened in 1943 in Dionisio Pulido’s corn fields? What kind of volcano is Parícutin?2.What kind of volcano generates the most new material each year, in terms of volume?3.How do volatiles drive eruptions-what happens, and how is this like opening a can of Coke?4.How does magma silica content relate to explosivity? You should understand why felsic magmaproduces more explosive eruptions than mafic magma.5.What is the scale that volcanologists use to “rank” volcanoes?6.What would it be like to experience the eruption of a shield volcano-what would you expect tosee, and what would this volcano look like? How fast would the flow move-could you outrunit?7.You should be able to identify the volcanic hazards from lecture given descriptions, pictures, orvideos. You should also know what types of volcanoes they are associated with.8.Why do scoria cone volcanoes switch from making explosive scoria initially to having effusivelava flows later?9.What happened at Nevado del Ruiz in 1985, and what processes can trigger this kind ofhazard?10. What kind of a volcano is Mt. Rainier, and what is the structure of these volcanoes and the platetectonic setting tht they are associated with?Lecture DetailsMajor Themes1.There are several different kinds of volcanoes, and they each have different associated hazards.2.More silicic magma = more explosive eruptions.3.Magma composition is linked to plate tectonic settings.A tiny bit of review: what igneous rock floats?: pumiceSome great volcano web sites:1.How volcanoes work:2.Volcanic hazards:3.Volcanoes of the world:The story of Parícutin:-strange/Paricutin was born in the 1940s and erupted for about a decade. This was the first volcano geologistswere able to study from its birth to its extinction!About Parícutin:1. Cinder conevolcano2. Grew 1,200 feet from 1943 to 1952 (6 meters tall in a day, 5 stories tall in a week, 1,100’ tall in firstyear of formation)3. Lava flows covered ten square miles and destroyed two townsWhy did Parícutin happen? What determined its eruptive characteristics?1
Volcanoes are:vents in the Earth’s surface that erupt lava, gases, and ash. They are usually conical,

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Term
Fall
Professor
BradleyCramer
Tags
Volcano, Basalt, eruptions

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