Question

Mention any two extrusive landforms caused by volcanic eruptions.

Answer 1

1. Composite cone: The volcano which erupts both lava and pyroclastic rocks form alternating layers of these two materials and build up to form composite cones. Examples: Fujiyama in Japan Vesuvius and Stromboli in Italy.
2. Caldera: During repeated eruptions, the summit of a volcano may be blown up. In its place, a large depression called caldera is formed. These are generally formed when the magma chamber is no longer able to emit sufficient magma and results in the collapse of a cone either partly or wholly.