Lastarria

High school (ages 12+)
Geography

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Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/lastarria

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. How high is Lastarria?5,697 meters (18,691 feet)
2. What is the primary activity?Intense fumarolic emissions, significant volcanic gas source, and molten sulfur deposition
3. What is the subsurface activity indicator?Progressive ground uplift suggesting deep magma intrusion
4. Why does Lastarria have hot gas vents?The volcano has many fumaroles that release hot steam, carbon dioxide, and sulfur. These gases come from magma below the surface, which heats the rocks and melts sulfur.
5. Where is Lastarria located?Lastarria is on the border of Chile and Argentina, in the Central Volcanic Zone of the Andes. It is part of a chain of volcanoes formed by the Nazca Plate sliding under the South American Plate.

Stratovolcano: A large, conical volcano built up by many layers of hardened lava, ash, and tephra, typically found at subduction zones.
Fumarole: An opening in the Earth's crust, often near volcanic activity, that emits steam and volcanic gases.
Magma Intrusion: The process whereby molten rock (magma) from the Earth's mantle or crust moves into pre-existing rock formations.
Subduction Zone: A region of the Earth's crust where one tectonic plate moves under another, leading to seismic and volcanic activity.