4.3 Where do igneous rocks appear in a landscape?
Types of volcanoes continued
Composite cone (Stratovolcano)
Most are located adjacent to the Pacific Ocean (e.g., Fujiyama, Mt. St. Helens)
Large, classic-shaped volcano (1000's of ft. high & several miles wide at base)
Composed of interbedded lava flows and layers of pyroclastic debris
Most violent type of activity (e.g., Mt. Vesuvius)
Often produce a nue ardente
Fiery pyroclastic flow made of hot gases infused with ash and other debris
Move down the slopes of a volcano at speeds up to 200 km per hour
May produce a lahar, which is a volcanic mudflow