1 Geology Dep. Cairo Univ. Geomorphology 210

By: A Abdelhalim (Dubai coast, UAE)

2 Geology Dep. Cairo Univ.

Shore line

Coastel landforms Beaches, Spits, Hooks, Bars, Barrier Islands, Lagoons, and

Estuaries

Tidal flats, Tidal marshes, and mud flats

Marine Terraces

Coarel reefs

Coastel erosional landforms

Content

3 Geology Dep. Cairo Univ.

Shore line

NEAR SHORE

http://galleryhip.com/ocean-shoreline-diagram.html

4 Geology Dep. Cairo Univ.

• Coast : Indicates the line of intersection of seawater with

the continents.

• Shoreline: Indicates the area which located between the

level of low tide and the high land on the continent.

• Beach: Is the area between the level of low tide and the

high tide which covered with sand and gravel.

• Foreshore: Is the area between high and low tide.

• Back shore: is the area between high tide and coastline.

5 Geology Dep. Cairo Univ. http://galleryhip.com/ocean-shoreline-diagram.html

6 Geology Dep. Cairo Univ. http://galleryhip.com/ocean-shoreline-diagram.html

Beaches, Spits, Hooks, Bars, Barrier Islands, Lagoons, and Estuaries

7 Geology Dep. Cairo Univ. http://galleryhip.com/ocean-shoreline-diagram.html

8 Geology Dep. Cairo Univ. http://en.wikipedia.org/wiki/Coast#/media/File:Accreting_coast_Image6.svg

9 Geology Dep. Cairo Univ.

Spits

Elongated ridges of sand extending from the land into the mouth

of an adjacent bay, often the end of a spit hooks landward in

response to wave-generated currents.

Baymouth bar

A sand bar that completely crosses a bay

Tombolo

A ridge of sand that connects an island to the mainland or

another island

10 Geology Dep. Cairo Univ. http://www.thecanadianencyclopedia.ca/en/article/coast/

11 Geology Dep. Cairo Univ.

The development of coasts with different types depends on

• The effect of waves and currents

• Nature of coastal rocks

• Dipping and elevation of coastal area.

• To how much extent the coastal area affects by

lowering and elevation of sea level.

• Human activities.

12 Geology Dep. Cairo Univ.

The true definition of a reef is a ridge of a rock or any other type

of land that extends some distance at shallow water.

A reef has 2 main characteristics

1. Ridge of rock or sand 2. At or near the surface of water

A coral reef is a wave-resistant limestone structure produced by

living organisms, found principally in shallow, tropical marine

waters.

http://www.scienceclarified.com/landforms/Basins-to-Dunes/Coral-Reef.html

13 Geology Dep. Cairo Univ.

14 Geology Dep. Cairo Univ. http://www.thecanadianencyclopedia.ca/en/article/coast/

15 Geology Dep. Cairo Univ.