types of volcanoes

Created by

Mika De Rueda

Cards (17)

Mountain 
A land formation without vent (opening)
Parts of a Volcano
Magma chamber
Conduit/Vent
Crater
Flank
Base
Magma chamber 
An open space or an area of a highly fractured substrate where magma accumulates
Conduit
The pipe or vent at the heart of a volcano where material wells up from beneath the surface
Crater 
A circular depression around a volcanic vent where the lava, ash and rock erupt out of a volcano
Volcanic flanks 
The sides of a volcano which usually have fractures
Volcanic base 
The bottom and foundation of the volcano
Secondary parts of a Volcano
Sills
Dikes
Parasitic cone
Caldera
Sills 
Beds of rocks that form as a result of rock formation between layers of older materials
Dikes 
Rock sheets that can form from magma when they seep into cracks in rocks
Parasitic cone 
The cone-shaped accumulation of volcanic material not part of the central vent of a volcano
Caldera 
A large circular depression with steep walls and is at least 1-km wide
Types of Volcanoes 
Lava Dome
Shield Volcano
Stratovolcano
Pyroclastic cones
Lava Domes 
Form when viscous lava cannot flow too far due to the viscosity and cools into a mound
Height: small (up to around 200 meters high)
Shape: circular mound or dome-shaped
Slope: steep
Shield Volcanoes 
Form when low-viscosity basaltic lava is allowed to flow freely from a vent stacking upon each other
Height: Very tall (up to around 9,000 meters high)
Shape: Like a shield set on the ground, broad
Slope: Gentle slope, ~10°
Composite/Stratovolcanoes 
Form by the accumulation of various successive erupted materials
Height: Tall (up to 8,000 meters high)
Shape: Roughly symmetrical mound
Slope: Steep
Pyroclastic Cones 
Small, steep mounds composed of tephra or volcanic fragments formed by explosive eruptions
Height: Small (up to around 400 meters high)
Shape: Roughly symmetrical mound
Slope: Steep