Check out the volcano tours offered by Volcano-Adventures!
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Guaranteed tours:
14-21 Jan: Erta Ale Volcano Special - Danakil desert (Ethiopia)
14-24 Jan: Erta Ale Volcano Special - Danakil desert (Ethiopia)
4-17 Feb: Desert, salt and volcanoes - Danakil desert (Ethiopia)
12-18 Mar: Kilauea Volcano Special - Big Island, Hawaiʻi
6-21 May: From Krakatau to Bali - Java (Indonesia)
13-21 May: From Stromboli to Etna - Eolian Islands + Etna volcano (Italy)
20-27(28) May: Fascination Volcano - Santorini Island (Greece)
29 May - 3 Jun: Aegean's Hidden Gem: Isle of Milos - Milos Island (Greece)
3-18 Jun: From Krakatau to Bali - Java (Indonesia)
4-11 Jun: Nyiragongo Lava Lake & Mountain Gorillas - DR Congo + Rwanda
: spaces available / : guaranteed / : few spaces left / : booked out
 

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Illustrated Volcano Glossary

Search for term:

granite

Volcanology
Pink granite (image: Friman / Wikimedia Commons)
Pink granite (image: Friman / Wikimedia Commons)
Granite is the most well-known and one of the most common intrusive magmatic (plutonic) rock type. It is formed when an intrusion of viscous magma with high silica content (68-75 wt %) remains under the surface of the earth, where it cools and crystallizes slowly inside the crust.
Granite is the equivalent of its extrusive (volcanic) rock type rhyolite. It is granular and coarse-grained in texture. Its principal minerals are feldspars, quartz, and mica.

Granites can be predominantly white, pink, or gray in color, depending on their mineralogy.

Related keywords (1):

diorite
 

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