Detailed plate boudary information including examples of each

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  • Created on: 12-11-14 14:37
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Kieran Podbury
St Benedicts Catholic School
12FRA
Plate boundary Picture of the plate Description/features Example
boundary
Divergent This type of plate boundary occurs when two plates are moving The divergence of the Eurasian and
away from each other as shown in the diagram. This causes a the North American plate in the
central rifts and transform fault. Volcanos are also frequent but mid-Atlantic.
low level explosions due to the magma rising through from the
asthenosphere easily without pressure building up due to week
crusts around the boundary.
Convergent- This type of boundary occurs when two plates are moving toward The convergence of the Nazca plate
Oceanic­ continental each other, the oceanic crust is denser than the continental this and the South American plate and the
causes the oceanic to be sub ducted into the asthenosphere, pacific and the Philippine plate.
hence why it is also named a destructive plate boundary due to
the face the fact the plate is destroyed. Earthquakes are common
at this plate boundary due to the fact that the plate slips and
causes friction and the release of energy.
Convergent­ When two continents meet head-on, neither is subducted because The collision of India into Asia 50
Continental­ the continental rocks are relatively light and resist downward million years ago caused the Eurasian
continental motion. Instead, the crust tends to buckle and be pushed upward Plate to crumple up and override the
or sideways. The collision of India into Asia 50 million years ago Indian Plate. After the collision, the
caused the Eurasian Plate to crumple up and override the Indian slow continuous convergence of the
Plate. After the collision, the slow continuous convergence of the two plates over millions of years
two plates over millions of years pushed up the Himalayas and the pushed up the Himalayas and the
Tibetan Plateau to their present heights. Most of this growth Tibetan Plateau to their present
occurred during the past 10 million years these mountains are heights
called fold mountains.
Convergent­ When two oceanic plates converge one is usually subducted under The Marianas Trench, for example, is a
Oceanic­ oceanic the other and in the process a deep oceanic trench is formed. deep trench created as the result of
Oceanic-oceanic plate convergence also results in the formation of the Philippine Plate subducting under
undersea volcanoes. Over millions of years, however, the erupted the Pacific Plate.

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Kieran Podbury
St Benedicts Catholic School
12FRA
lava and volcanic debris pile up on the ocean floor until a
submarine volcano rises above sea level to form an island volcano.
Such volcanoes are typically strung out in chains called island arcs.
Transform Transform boundaries are places where plates slide sideways past The North American and the Pacific
each other. At transform boundaries lithosphere is neither created plate moving past each other on the
nor destroyed.…read more

Comments

TomCorf

Really clear grid overview of different types on plate boundary, including pictures

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