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when a volcano is active, over its life time (thousands of years longer than ours) it 'erupts' or 'oozes' magma/lava onto the top crustal layer of the earth, every time this happens over those thousands of years, it gets a little bit higher as more and more material builds up from the previous times the material was deposited from lava flows and violent euptions and ash clouds. You can 'go back in time' in a way by going to Hawaii islands or white island -New Zealand (one of the youngest and most active volcanic regions of earth) and see this process take place for a fraction of a second (which is the scale of how much of the entire process you would see if the process lasted for a few hours!)
Wiki User
∙ 12y ago
Wiki User
∙ 7y agoAs a volcano erupts, the rock it produces will pile up to form a mountain. If the volcano starts erupting underwater, the resulting mountain, called a seamount. can eventually be built up above the surface of the water for form a new island.
Wiki User
∙ 12y agoA lot of material comes out volcanoes, some of which start under the sea, but over time enough material is ejected for the for the material build up to reach the surface. These volcanic islands continue to grow as long as the volcano OS active.
Wiki User
∙ 9y agoVolcanic activity over hot spots on the ocean floor form islands. Magma rising from hot spots congeal from basaltic lava flows forming Shield Volcanoes which over time grow into islands.
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What makes montserrat a volcanic island?
Montserrat is a volcanic island because it was formed by a volcano. The volcano is the result of a subduction zone.
What was the name of the volcano that formed surtsey?
It was an explosion from the island Surtur
Is every island the top of a volcano or mountain?
No. Some are, but not all. Islands can also be formed by erosion.
The plants that first grow on an island formed by a volcano are part of a progression called?
primary succession
How are volcano island formed?
It is formed by a convergent boundary of an oceanic plate and continental plate when they hit each other and goes down into the asthenosphere thus making the magma to rise above the earth's surface making a volcano.Then it solidifies and therefore it makes a volcano island.
How was catalina island formed?
volcano
How was the island of Saint Lucia formed?
formed by a volcano i think erruption
What makes montserrat a volcanic island?
Montserrat is a volcanic island because it was formed by a volcano. The volcano is the result of a subduction zone.
How is an island formed?
An island may be formed by a volcano. Islands may also be formed when the coasts have eroded so much that they are no longer connected.
Why does Crater Lake have an island in it?
The island in Crater, called Wizard Island was formed by small volcanic eruptions that occurred after the Crater Lake caldera formed but before the volcano went extinct.
What was the name of the volcano that formed surtsey?
It was an explosion from the island Surtur
Is volcano Pinatubo formed in the middle of a continent?
No. It is on the island of Luzon.
How was Hawaii formed bu a volcano?
the volcano cooled is liquid magma and made and island. this is really true
Which type of volcano is an island volcano?
Stratovolcanoes, shield volcanoes, and complex volcanoes have all formed islands.
What is the planet's largest volcano?
The largest active volcano on the planet is Mauna Loa, which is found on an island called Big Island, in Hawaii.The volcano actually starts underwater and the island itself has been formed by lava cooling in the sea.
Was Bora-Bora formed by a volcano?
Bora Bora exemplifies what Charles Darwin called an "almost atoll," a barrier reef island formed by an oceanic volcano with a fringing coral reef. Over the course of the years, as the surrounding coral reef grows upward, the island with the volcano sinks.
What country is surtsey volcano in?
It is 32Kms south of Iceland, a new island formed in 1963
