12. 3) Laccolith
(A dome shape formed when magma is pushed into a sill
and doesn’t spread)
When a laccolith is formed it may push the layers of rock above it.
14. Types of volcanoes
Active volcanoes
Dormant Extinct volcanoes
volcanoes
(Currently erupting or
(Stopped
recently erupted)
(Does not erupt
erupting)
for some time)
Shield
volcanoes
Cinder- Composite
cone
volcanoes
volcanoes
15. 1) Shield volcanoes
Built by thinner, fluid lava that spreads over a
large area.
(Broad base and gently sloping sides)
16. 2) Cinder-cone volcanoes
Formed by thick lava that is thrown high up in the
air and fall as chunks or cinders.
(Form as cone shape with narrow base and steep sides)
17. 3) Composite volcanoes
Built by layers of ash and cinders sandwiched
between layers of hardened lava.
(Both sides of a composite volcano look the same)