Nevado Anallajsi facts for kids
Quick facts for kids Nevado Anallajsi |
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The upper right part of the NASA Space Shuttle image shows the eroded volcanic complex Nevado Anallajsi.
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| Highest point | |
| Elevation | 5,750 m (18,860 ft) |
| Geography | |
 Nevado Anallajsi
Location in Bolivia
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| Parent range | Andes |
| Geology | |
| Mountain type | Stratovolcano |
| Last eruption | Unknown |
Nevado Anallajsi is a large stratovolcano located in Bolivia, a country in South America. It stands tall in the Andes mountain range. A stratovolcano is a cone-shaped volcano built up by many layers of hardened lava, tephra, pumice, and volcanic ash. These volcanoes are known for their explosive eruptions.
Exploring Nevado Anallajsi
Nevado Anallajsi is a very old volcano. Scientists believe it is about 2.6 million years old, though some estimates suggest it could be even older, around 10 million years old. This volcano covers a large area, about 368.8 square kilometers (which is roughly 142 square miles).
What is it Made Of?
The main rocks that make up Nevado Anallajsi are called andesite and dacite. These are types of volcanic rock. The volcano sits on top of a flat area called a plateau, which is made of a rock called ignimbrite. Ignimbrite forms from very hot, fast-moving flows of gas and volcanic ash that erupt from a volcano.
When Did it Last Erupt?
The exact date of Nevado Anallajsi's last eruption is not known. However, the newest lava flows found on the volcano are on its northern side. This suggests that the most recent activity happened from a vent (an opening where lava comes out) on that part of the mountain.
See also
- List of volcanoes in Bolivia
- In Spanish: Nevado Anallajsi para niños
Sources
