soils. soil weathering and erosion transports materials across earth’s surface weathering and...

21
Soils Soils

Upload: ilene-fisher

Post on 17-Jan-2016

229 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The

SoilsSoils

Page 2: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The

SoilSoil

Weathering and erosion transports Weathering and erosion transports materials across Earth’s surfacematerials across Earth’s surface

The loose material covers most of The loose material covers most of Earth’s surface is a Earth’s surface is a resourceresource. .

Soil (not dirt) is a combination of Soil (not dirt) is a combination of weathered rock and organic material weathered rock and organic material that can support plant life. that can support plant life.

Soil formation is a Soil formation is a slowslow process. process.

Page 3: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The

Soil FormationSoil Formation Parent materialParent material – the material weathered – the material weathered

into soilinto soil Residual SoilResidual Soil – –

Soil that contains weathered material that Soil that contains weathered material that matches the local bedrockmatches the local bedrock

The local bedrock was weathered in place and The local bedrock was weathered in place and turned into soil. (Remember this is a very slow turned into soil. (Remember this is a very slow process)process)

Transported SoilTransported Soil Soil that contains weathered material that is Soil that contains weathered material that is

different from the local bedrock.different from the local bedrock. The rock material needed to make the soil was The rock material needed to make the soil was

‘transported’ (wind, water, glaciers) ‘transported’ (wind, water, glaciers) NYS is mostly covered in transported soilNYS is mostly covered in transported soil

Page 4: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The

Soil ProfilesSoil Profiles

The ‘ideal’ soil The ‘ideal’ soil profile is composed profile is composed of 4 layersof 4 layers O - organicO - organic A - leachingA - leaching B - accumulationB - accumulation C – weathered C – weathered

parent materialparent material

Page 5: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The

Soil ProfilesSoil Profiles

Page 6: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The

Types of SoilTypes of Soil

There are many different soils that There are many different soils that are formed under unique conditionsare formed under unique conditions

Soil composition –Soil composition – Inorganic material sand, silt, Inorganic material sand, silt, clayclay. . This material affects the amount of This material affects the amount of

water within soil water within soil sand dries out fast, clayey soil dries sand dries out fast, clayey soil dries

slower.slower.

Page 7: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The
Page 8: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The

Soil Soil ClassificatiClassificati

onon• Different conditions lead to different soil types.

Page 9: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The

Factors that influence Soil Factors that influence Soil DevelopmentDevelopment

TimeTime Parent MaterialParent Material Plants and animalsPlants and animals Topography (slope)Topography (slope) ClimateClimate

Page 10: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The

Some Soil PhotosSome Soil Photos

Page 11: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The
Page 12: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The

New York Tennessee

Page 13: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The

South Dakota

Page 14: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The

California

Page 15: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The

Houston, TX

North East US

Page 16: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The

Northeast woodland

Page 17: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The

Tropical Soils:

•Very thick B layer

Page 18: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The
Page 19: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The

England

Page 20: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The

Desert Soil

Page 21: Soils. Soil Weathering and erosion transports materials across Earth’s surface Weathering and erosion transports materials across Earth’s surface The

Hawaii Soil