Category Archives: Geology

How Many Active Volcanoes are there on Earth ?

There are about 1,500 potentially active volcanoes worldwide, aside from the continuous belt of volcanoes on the ocean floor. About 500 of these have erupted in historical time.

How Many Volcanoes are in the World

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What is the Oldest Volcano on Earth ?

Mount Etna

  • Etna is considered the oldest volcano in the world. Its first recorded eruption took place around 1500 B.C.E. Since that date, the volcano is believed to have erupted an additional 190 times.
  • Located in Italy, Mt. Etna is one of the largest volcanoes on any continent. Throughout history, the mountain has experienced the largest eruptions of any continental volcano in the world. In mythology, Mt. Etna is associated with the forge of Vulcan and the home of the Cyclopes as well as the giant Enceladus. Mt. Etna sometimes is confused with Mt. Vesuvius, the volcano that destroyed the city of Pompeii in 79 C.E.

 

Mount Etna, Italy

Top 10 World’s Most Dangerous Volcanoes

Top 10 World's Most Dangerous Volcanoes

 

1 – Mount Vesuvius, Italy

Mount Vesuvius, Italy

 

2 – Santa Marνa, Guatemala

Santa Maria, Guatemala

 

3 – Galeras, Colombia

Galeras, Colombia

 

4 – Mauna Loa, Hawaii

Mauna Loa, Hawaii

 

5 – Taal Volcano, Philippines

Taal Volcano, Philippines

 

6 – Ulawun, Papua New Guinea

Ulawun, Papua New Guinea

 

7 – Mount Nyiragongo, D.R of Congo

Mt. Nyiragongo, Congo

 

8 – Mount Merapi, Indonesia

Mount Merapi Indonesia

 

9 – Sakurajima, Japan

Sakurajima, Japan

 

10 – Eyjafjallajokull, Iceland

Eyjafjallajokull, Iceland

 

How Minerals Form ?

Minerals can form on the surface through evaporation of solutions containing dissolved minerals. Minerals can form beneath the surface when dissolved elements and compounds leave a hot water solution or when materials melted in magma/ lava then cools & hardens.

Mineral Formation 1

Mineral Formation 2

Mineral Formation 3

Mineral Formation 4

Mineral Formation 5

Mineral Formation 6

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