Weathering &

Erosion

The breaking down of rocks, soil and minerals as well as artificial materials through contact with the Earth's

atmosphere, animals, plants and waters.

Weathering

Mechanical WeatheringChemical WeatheringBiological Weathering

Mechanical Weathering - Running Water

Chemical Weathering - Rock Staining

Biological Weathering - Roots

Three Major Types Of Weathering

• MECHANICAL WEATHERING - Rocks are broken down into smaller pieces without changing their composition.

• CHEMICAL WEATHERING – Rocks break down as their minerals change in composition.

• BIOLOGICAL WEATHERING – Rocks that break down both physically and chemically as a direct result of Animals or Plants.

Types of MECHANICAL Weathering

ICE-FROSTWEDGING

Repeated ThermalExpansion -Contraction

Types of MECHANICAL Weathering

EXFOLIATION

BIOLOGICAL INCURSION

Types of MECHANICAL WeatheringWIND ABRASION

Arches National Park Natural Sand Blasting

WATER ABRASION

The Goosenecks S.P.Downcutting

Types of MECHANICAL Weathering

Biological - Fauna

Biological-Flora

Types of Chemical Weathering

Biological - Lichens

Biological - Bacteria

Types of Chemical Weathering

(Cu) Copper-Oxidation

(Fe) Iron-Oxidation

Types of Chemical WeatheringACIDIFICATION

Acid Rain

CARBONATION

Tomorrow EROSION The processes that move sediments.

DUSTSTORMS GLACIAL MORRAINES