Why do volcanoes happen in Indonesia?
The majority of Indonesia’s volcano are located on a 3,000 km long chain called the Sunda Arc. Here, the subduction of the Indian Ocean crust underneath the Asian Plate produced most of these volcanoes.
Does Indonesia have a lot of volcanoes?
It can be said that Indonesia is a country having the most active volcanoes in the world. Indonesia has a great number of volcanoes in the world. There are 147 volcanoes, and 76 of them are the active volcanoes and spread along the islands of Sumatra, Java, Celebes, and Lesser Sunda (Figure 1).
How did volcanoes form in Indonesia?
Geography of Indonesia is dominated by about 150 volcanoes of all types and dimensions that were formed due to subduction processes occurring along the collision zone separating the Eurasian and the Indo-Australian tectonic plates.
Why do you think Indonesia is home to many volcanoes?
Indonesia frequently experiences earthquakes and volcanic eruptions because it lies near an intersection of shifting tectonic plates, including the Pacific plate, Eurasian plate, Australian plate and Philippine plate.
Why is Indonesia so geologically active?
The subduction of the Indian oceanic plate beneath the Eurasian continental plate formed the volcanic arc in western Indonesia, one of the most seismically active areas on the planet with a long history of powerful eruptions and earthquakes.
Which country has no volcano?
Even though Australia is home to nearly 150 volcanoes, none of them has erupted for about 4,000 to 5,000 years! The lack of volcanic activity is due to the island’s location in relation to a tectonic plate, the two layers of the Earth’s crust (or lithosphere).
How was Indonesia formed?
The Indonesian archipel- ago formed over the past 300 million years by reassembly of fragments rifted from the Gondwana supercontinent that arrived at the Eurasian subduction margin. The present-day geology of Indonesia is broadly the result of Cenozoic subduction and collision at this margin.
How are volcanoes formed?
A volcano is formed when hot molten rock, ash and gases escape from an opening in the Earth’s surface. The molten rock and ash solidify as they cool, forming the distinctive volcano shape shown here. As a volcano erupts, it spills lava that flows downslope. Hot ash and gases are thrown into the air.