Science W1 L1 - Volcanoes (Types of Volcanoes According to Shape) Flashcards
A type of volcano that has a
steep conical hill formed
above a vent that is
composed mostly of basalt
-non-explosive eruptions, fluid basaltic lava, gentle broad slopes.
-cools into cinders and settles
around the volcano’s opening.
These emerge in just a few years
during one active period;
afterward, they are usually extinct,
SHIELD
-explosive eruptions, small but steep slopes, pyroclastics. Forms when explosive activity throws magma into the air which cools into cinders and settles around the volcano’s
opening. These emerge in just a few years during one active period; afterward, they are usually extinct, but they may occur on the side of a larger volcano.
CINDER CONE VOLCANO (AKA SCORIA CONE)
-alternating between lava and pyroclastics, explosive and non explosive eruptions, steep and tall.
-over multiple eruptions, the accumulation of both explosive activity and lava flows form the steep, sweeping sides of this volcano. As it ages, multiple channels to the surface can splinter off of the central vent,influencing its shape.
COMPOSITE VOLCANO (AKA STRATO)