Download Continental-Continental Collisions

Convergent boundaries are when two
plates are running into each other
 When plates collide at this boundary,
they form different formations
depending on which plates hit

› Oceanic-oceanic
› Oceanic-continental
› Continental-continental

Oceanic-oceanic
› When these plates hit, the older, denser one
goes underneath the newer plate.
When the plate
reaches the
mantle, it melts,
and forms
volcanoes.
Trenches are also
formed where the
plates hit.

Continental plates aren’t as dense as
oceanic plates, so the continental plate will
stay on top.
The oceanic
plate melts
when it
reaches the
mantle, and
volcanoes are
formed on the
crust. This
forms
trenches as
well.

These plates are the same density, so
neither one goes beneath the other.
They are also less dense than the
asthenosphere below it, so they fold with
the pressure. This folding forms mountains
and earthquakes.
The two convection currents are driving
the plates together, and because they
can’t sink
back
down with
the
currents,
they fold
together
and form
mountains.
