CAVES, ARCHES, STACKS AND STUMPS
BY: KWAKU BONSU
Topic: Erosion Landforms
Aim: The Formation of Caves, Arches, Stacks and ...
Caves
Although coastal headlands
consist mostly of resistant
rock, there are always weak
points such as faults and
joints....
Arches
The caves are being
widened and enlarged by the
sea (through the erosion
processes:
corrasion, solution and
hydraul...
Stacks
Once the roof of the arch
has fallen down, it leaves an
isolated column the rocky
cliff to stand alone called a
sta...
Stumps
Once the stack has been
collapsed due to lack of
support, it leaves an even
smaller portion of the cliff
called a s...
Thank you for watching my presentation!
Presentation by: Kwaku Bonsu
Video found by: Kwaku Bonsu
Edited by: Kwaku Bonsu
Re...
Erosion landforms   (by kwaku bonsu)
Upcoming SlideShare
Loading in...5
×

Erosion landforms (by kwaku bonsu)

205
-1

Published on

PLEASE DOWNLOAD for full effect due to transitions and animations.

Published in: Education
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
205
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
2
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Erosion landforms (by kwaku bonsu)

  1. 1. CAVES, ARCHES, STACKS AND STUMPS BY: KWAKU BONSU Topic: Erosion Landforms Aim: The Formation of Caves, Arches, Stacks and Stumps
  2. 2. Caves Although coastal headlands consist mostly of resistant rock, there are always weak points such as faults and joints. These faults are forced to become larger and larger by the three erosion processes: corrasion, solution and hydraulic pressure. These faults and joints then eventually become small caves. This can be observed in the picture to the right of the Old Harry Rocks of Dorset in Southwest England.
  3. 3. Arches The caves are being widened and enlarged by the sea (through the erosion processes: corrasion, solution and hydraulic action). The waves eventually cut through the caves and form natural arches. The foot (lower end) of the arch is constantly being eroded and the roof of the arch soon becomes too heavy and it collapses.
  4. 4. Stacks Once the roof of the arch has fallen down, it leaves an isolated column the rocky cliff to stand alone called a stack. This stack continues to be eroded at the lower part. The undercut parts of the stack are called wavecut notches. Sooner or later the stacks base will become too thin to support the column of rock and the stack will collapse.
  5. 5. Stumps Once the stack has been collapsed due to lack of support, it leaves an even smaller portion of the cliff called a stump. This is the lower portion of the stack that was not broken down. The stump continues to be eroded and it slowly breaks down.
  6. 6. Thank you for watching my presentation! Presentation by: Kwaku Bonsu Video found by: Kwaku Bonsu Edited by: Kwaku Bonsu Research by: Kwaku Bonsu Background chosen by: Kwame Bonsu Animations chosen by: Mommy Animations executed by: Kwaku Bonsu Video downloaded by: Ghina Obeid THE END!
  1. A particular slide catching your eye?

    Clipping is a handy way to collect important slides you want to go back to later.

×