The document discusses the four phases of exogenic geomorphic processes: weathering, erosion, transportation, and deposition. It describes weathering as the mechanical and chemical breakdown of rocks through elements like temperature changes, wetting and drying, and frost action. Erosion is then defined as the wearing away of earth's surface by moving agents like water, wind, ice, and waves, which transport eroded debris to lower elevations. Finally, deposition occurs as the erosion agents lose energy and velocity, depositing debris in areas where it can accumulate to form new rocks.

1. PHYSICAL
GEOGRAPHY
Exogenic geomorphic process

2. THE PROCESS OF WEARING AWAY THE EARTH CAUSES A GENERAL
LOWERING AND LEVELING OUT OF THE SURFACE . IT IS KNOWN AS
DENUDATION AND IS CARRIED OUT IN FOUR PHASES:
weathering erosion
transportation deposition

3. WEATHERING
Weathering is mechanical disintegration and chemical decomposition of
rocks through the action of various elements of weather and climate.
The work of weathering is breaking up the rocks in of two kinds: chemical,
physical or mechanical weathering , but the processes involved in each are
closely interrelated.

4. PROCESS OF WEATHERING
Chemical
Weathering
• Solution
• Oxidation
• Decomposition
by organic acids
Physical or
mechanical
weathering
• Repeated
temperature
changes
• Repeated drying
and wetting
• Frost action
• Biotic factors
Biological
Weathering
• None

5. EROSION
When the massive rocks break into smaller fragments
through weathering then erosion occur on them. The
active wearing away of the earth’s surface by moving
agents like running water , wind , ice and waves. These
agents wear away the rocks and transport the eroded
debris to lower land or right down to the sea.

6. DEPOSITION
Deposition is a consequence of erosion. The erosion
agents loose their velocity and energy. By deposition
depressions are filled up. The dumping of the debris in
certain parts of the earth, where it may accumulate to
form new rocks.

7. AGENTS OF EROSION
•Wind
•Running water
•Glaciers
•Waves
•Ground water

8. COASTAL LANDFORMS
Coastal features of Erosion Coastal features of deposition
Capes and byes Beaches
Cliffs and wave-cut platforms Spits and bars
Cave, arch, stark and stump Marine dumes and dune belts
Geos and gloups

9. ARID OR DESERT LANDFORMS
Wind deposition in deserts Wind erosion in deserts
1. Dunes
• Barchan
• Serifs or longitudinal dunes
2. Loess
1. Rock pedestals or mushroom
rocks
2. Zeugen
3. Yardages
4. Mesas and buttes
5. Inselberg
6. Ventifacts or dreikanter
7. Deflation hollows

10. TRANSPORTATION
The removal of the eroded debris to new positions.