Transcript Erosion_Landforms_on_Surface_temp

The top of a Canyon rim shows a prehistoric plateau.
Canyon wall shows layers of sediment that once lay
buried below the surface.
Over time
Millions
of sediment
years agowas
the deposited
land in large
on parts
the seafloor
of the western
and theUnited
ocean States
was
was covered
drained
leaving
by dry
shallow
flat land.
sea.
Running water in the form of rain, floods, and mighty rivers cut
gullies into the rock surface leaving behind higher formations.
When the water disappears, only the mesas remain.
Freezing and thawing has weathered much of the
rock allowing erosion to create unique landforms.
Freezing and thawing has weathered
much of the rock allowing erosion to
create unique landforms.
Erosion has carved many landforms such as
mesas, cliffs, ridges and peaks in the canyon.
Wind, rain, gravity and the flowing river
will continue to carve new features.
Glaciers are like rivers of ice that flow
down between the mountains scraping
and dragging rocks .
They carve out unique U-shaped valleys
between ridges and peaks.
Glaciers often leave Basins cut into
the Mountain sides which fill with
water become Lakes.
Glaciers that melt away leave not only the
rock, soil and pebbles carried from far off
mountaintops but often create lakes trapped
behind an unmoved mountain ridge.
Desert mesas (also called buttes) stand alone after
erosion has removed all the surrounding rock.
A rock island can be formed as the
coastline is eroded away from a
peninsula sticking out into the water