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Topic: Volcanoes. Volcano. An opening in the crust where magma and gases erupt Form at: 1. - 2. - 3. -. Diamond Head in Hawaii. Sailors thought calcite crystals in the rocks were diamonds. - PowerPoint PPT Presentation

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Topic: VolcanoesTopic: Volcanoes

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An opening in the crust where magma and gases erupt

Form at:1. -2. -3. -

VolcanoVolcano

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Diamond Head in Hawaii.

Sailors thought calcite crystals in the rocks were diamonds.

Diamond Head formed as hot magma hitting ocean water, causing explosions that threw exploded magma particles (tuff) into a broad ring.

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Mount St. Helens

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Steep slope + loose volcanic debris + heavy

rains

Vesuvius – 79AD

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Mt. Vesuvius, Italy

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Hot Spots

-

(Find them on page 5 of the ESRT )

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Hawaiian IslandsHawaiian Islands

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Oldest Hawaiian Island: Kaui

Youngest Hawaiian Island in the Making:

Loihi

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45 miles wide

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FQWhat state will the Yellowstone hot spot be found

in the future?