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Fold Mountains
Fault-block Mountains
Formations of
Mountains
Dome Mountains
Plateau Mountains
By: Katie Marquis 8E
Fold Mountains
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The most common mountains are fold mountains.
Fold mountains are formed flat then they create horizontal layers.
Fold mountains are formed when the continental plates collide.
The upturns in this diagram below are called anticlines and the downturns are
called synclines.
The Rocky Mountains in North America, the Alps in Europe, the Andes in South
America, the Urals in Russia and the Himalayan Mountains in Asia are
examples of Fold Mountains.
Examples
Fault-block Mountains
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o Uplifted rocks are called block
mountains or horsts.
The Fault-block mountains are created
o Block mountains have two steep
when faults or cracks in the Earth's
sides, one steep front side and then
crust force rocks up or down.
a sloping back side.
Fault blocks are very large blocks of
o Collapsed rocks are called graben,
rock, sometimes hundreds of
which can be small or form valley
kilometres in area.
systems.
The largest of these fault blocks are
o Fault-block mountains break up into
called crustal blocks.
chunks and move either up or
down. When they move apart
blocks of rock get stacked on one
another.
this figure shows Fault block
mountains having one side steep
and a lope on the other
Examples
Dome Mountains
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Dome Mountains are also called ‘up warped’ Mountains.
These mountains are formed when large amounts of molten
rock or magma push the earth’s crust from underneath.
The diameters of the bases of dome mountains range up to
hundreds of kilometres.
Dome mountains are formed in the same way as volcanoes.
The hot temperatures in the Earth cause solid rocks to melt,
forming magma. Magma rises upwards and forms a dome
shape.
The Richat
Structure in the
Sahara Desert,
Africa
Examples
Plateau Mountains
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Plateau mountains are high areas of land they
can range from any size.
Plateau Mountains are formed by Erosion.
Plateaus are naturally built over millions of years.
The highest and biggest plateau on Earth, the
Tibetan Plateau in East Asia, resulted from a
collision between two tectonic plates about 55
million years ago.
Island in the Sky, Canyonlands
National Park
Argentina, Patagonia,
Examples