GEOLOGY

Detailed explanation-1: -The most majestic of the volcanoes are composite volcanoes, also known as strato-volcanoes. Composite volcanoes are tall, symetrically shaped, with steep sides, sometimes rising 10, 000 feet high. They are built of alternating layers of lava flows, volcanic ash, and cinders.

Detailed explanation-2: -Cinder cones are the most common type of volcano. A cinder cone has a cone shape, but is much smaller than a composite volcano. Cinder cones rarely reach 300 meters in height but they have steep sides.

Detailed explanation-3: -Composite volcanoes or stratovolcanoes are the most common type of noted volcanic edifices, and they occur in all regions of volcanic activity and throughout the world. However, they are particularly frequent in subduction zones, for example, along the circum-Pacific belt of convergent plate margins.

Detailed explanation-4: -They are typically steep-sided, symmetrical cones of large dimension built of alternating layers of lava flows, volcanic ash, cinders, blocks, and bombs and may rise as much as 8, 000 feet above their bases.

Detailed explanation-5: -Composite volcanoes usually erupt a range of compositions from basalt to rhyolite, but intermediate (andesitic) and dacitic magmas are most common.