Discuss the processes involved in volcanism. Highlight the major volcanic regions in the world and their associated tectonic settings.

Major factors leading to the volcanism are:

i) Shifting of the tectonic plates

[Diagram shows convergent and divergent plates with arrows]

ii) Hot plumes - volcanic hotspots are formed when some areas are much warmer and lava flows out of them.

[Diagram shows parental plume]

(Eg) Yellowstone National Park USA

Major volcanic regions of the world and associated tectonic cuttings:

[Diagram showing map with locations]

The major volcanic regions lie around the Ring of Fire - along the boundaries where pacific plate meets the other land plates such as American plate, Altai plate. Indonesia is one of the most volcanically active country along with philippines.

The divergent plates such as Mid-Atlantic Oceanic ridge shows some activity.

The volcanism offers opportunity to understand the interior of earth. They are also major source of precious natural s. Thus process of volcanism is an important geological phenomenon.

The major volcanic regions of the world are associated with tectonic cuttings as shown. The diagram includes map with different regions marked:

The diagram shows andes mountain along the west coast, Italy (Mt Vesuvius) in europe, and the ring of fire which is the most volcanically active region. The India plate along with pacific plate shows boundary where tectonic activity occurs.

The major volcano regions lie around the Ring of Fire - along the boundaries where Pacific plate meets other land plates such as American plate, Altai plate. Indonesia is one of the most volcanically active country along with Philippines.

The divergent plates such as Mid-Atlantic Oceanic ridge shows some activity.

The volcanism offers opportunity to understand the interior of earth. They are also major source of precious natural s. Thus process of volcanism is an important geological phenomenon.