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Earth Shakes, Rattles, and
Rolls
Mountain Building
•Crust
•Mantle
•Outer core
•Inner core
Convection currents
in the magma move
the earth’s crust.
Types of Mountains
• Folded
• Fault-block
• Dome
FOLDED MOUNTAINS
http://www.cssd11.k12.co.us/dohnts/images/earth/fldmtn.jpg
FOLDED MOUNTAINS
•Appalachian Mountains in the eastern United States,
and the Swiss Alps in Switzerland
•form when two plates collide head on, and their
edges crumble
•consist mainly of sedimentary rocks, like limestone
and shale
FAULT-BLOCK
MOUNTAINS
FAULT-BLOCK MOUNTAINS
•Consist of huge blocks of the earth's crust that
have been tilted or pushed up along a fracture line
called a fault
•Sierra in California, Arizona is an example.
• Created when a plate hits a fault and tips upside
down, creating erosion and debris, which is at the
base of the mountain.
DOME
MOUNTAINS
DOME MOUNTAINS
•Dome mountains are formed when the hot magma
rises from the mantle and pushes up the overlying
sedimentary layer of the Earth's crust.
•In the process, the magma is not erupted, but it
cools down and forms the core of the mountain.
•They are called dome mountains due to their
appearance that resembles a dome shape.