WHAT IS VOLCANIC ISLAND?

A volcanic island is an island formed by the eruption of volcanoes. These islands are typically located in the ocean and are the result of volcanic activity beneath the Earth's crust. Volcanic islands can be part of larger landforms, such as island arcs or archipelagos, and they often exhibit unique geological features.

Here's how volcanic islands are typically formed:

1. Volcanic Eruption: Volcanic islands are formed when magma (molten rock), ash, and gases are expelled from a volcanic vent on the ocean floor or through the Earth's crust.
2. Accumulation of Lava and Ash: As the magma reaches the surface, it cools and solidifies, forming layers of volcanic rock. Over time, repeated eruptions contribute to the accumulation of lava and ash, building up the island.
3. Submarine Stage: In the initial stages, a volcanic island may start as a submarine volcano beneath the ocean surface. As volcanic activity continues, the island grows in size, eventually reaching the ocean surface.
4. Emergence and Growth: The island emerges above sea level as volcanic eruptions continue, and the accumulated volcanic material builds up. This can lead to the formation of a distinct landmass with a variety of volcanic features, including calderas, craters, and lava flows.
5. Island Shape and Composition: The shape and composition of volcanic islands can vary depending on factors such as the type of volcanic activity (explosive or effusive), the size and frequency of eruptions, and the surrounding tectonic environment.