3 TYPES OF VOLCANOES. SHEILD HOW DO THEY FORM? Thin layers of lava pour out a vent and harden on top of previous layers.

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Presentation transcript:

3 TYPES OF VOLCANOES

SHEILD

HOW DO THEY FORM? Thin layers of lava pour out a vent and harden on top of previous layers

TYPE OF ERUPTION AND LAVA Quiet eruption with thin, runny lava

PHYSICAL DESCRIPTION Wide, flat gently sloping mountain

2 EXAMPLES AND THEIR LOCATIONS Mauna Kea, Mauna Loa and Kilauea in the Hawaiian Islands

CINDERCONE

HOW DO THEY FORM? Thick lava produces ash, cinders and bombs, which pile up around the vent forming a steep cone shaped pile

TYPE OF ERUPTION AND LAVA Explosive eruption with thick magma (which will produce ash, cinder, bombs and a pyroclastic flow)

PHYSICAL DESCRIPTION Tall, pointed, steep, cone shaped hill or mountain

2 EXAMPLES AND THEIR LOCATIONS Sunset Crater in Arizona and Eldfell in Iceland

COMPOSITE OR STRATO

HOW DO THEY FORM? Quiet eruptions with lava flows alternating with explosive eruptions of ash, cinders and bombs

TYPE OF ERUPTION AND LAVA Quiet and explosive eruptions with either thin or thick lava respectively

PHYSICAL DESCRIPTION Tall cone shaped mountain with alternating layers of lava and ash

2 EXAMPLES AND THEIR LOCATIONS Mt. Fuji in Japan and Mt. St. Helens in Washington