Understanding Soil Formation. Objectives Identify five factors involved in soil formation. Describe...
-
Upload
herbert-claud-holland -
Category
Documents
-
view
215 -
download
0
Transcript of Understanding Soil Formation. Objectives Identify five factors involved in soil formation. Describe...
![Page 1: Understanding Soil Formation. Objectives Identify five factors involved in soil formation. Describe different types of parent material. Explain topography.](https://reader034.fdocuments.us/reader034/viewer/2022042717/56649e245503460f94b1357b/html5/thumbnails/1.jpg)
Understanding Soil Formation
![Page 2: Understanding Soil Formation. Objectives Identify five factors involved in soil formation. Describe different types of parent material. Explain topography.](https://reader034.fdocuments.us/reader034/viewer/2022042717/56649e245503460f94b1357b/html5/thumbnails/2.jpg)
Objectives• Identify five factors involved in soil formation.
• Describe different types of parent material.
• Explain topography and how it affects soil formation.
• Explain how organisms affect soil development.
• Describe how time and weathering affect properties of soil.
• Explain how climate affects the development of soil.
![Page 3: Understanding Soil Formation. Objectives Identify five factors involved in soil formation. Describe different types of parent material. Explain topography.](https://reader034.fdocuments.us/reader034/viewer/2022042717/56649e245503460f94b1357b/html5/thumbnails/3.jpg)
Soil Formation
•Five factors in forming soil
•Parent Material
•Topography
•Organisms
•Time/weathering
•Climate
![Page 4: Understanding Soil Formation. Objectives Identify five factors involved in soil formation. Describe different types of parent material. Explain topography.](https://reader034.fdocuments.us/reader034/viewer/2022042717/56649e245503460f94b1357b/html5/thumbnails/4.jpg)
Parent Materials
•Classified by the way they were moved and scattered.
![Page 5: Understanding Soil Formation. Objectives Identify five factors involved in soil formation. Describe different types of parent material. Explain topography.](https://reader034.fdocuments.us/reader034/viewer/2022042717/56649e245503460f94b1357b/html5/thumbnails/5.jpg)
Parent Materials
• Moved by glaciers
• Glacial Till - No layers
• Can contain fine soil to pebbles to boulders
• Loess - occurred from blowing of soil after glaciers melted and dried
• Most Desirable
• Outwash - occurs during melting; larger items deposited first, smaller items deposited last
![Page 6: Understanding Soil Formation. Objectives Identify five factors involved in soil formation. Describe different types of parent material. Explain topography.](https://reader034.fdocuments.us/reader034/viewer/2022042717/56649e245503460f94b1357b/html5/thumbnails/6.jpg)
Parent Materials
•Deposited by flooding streams and rivers
•Alluvium - Bottomlands and flood planes
![Page 7: Understanding Soil Formation. Objectives Identify five factors involved in soil formation. Describe different types of parent material. Explain topography.](https://reader034.fdocuments.us/reader034/viewer/2022042717/56649e245503460f94b1357b/html5/thumbnails/7.jpg)
Parent Materials•Bedrock - Shale,
Sandstone, or Limestone
•Organic Matter - Usually swamp vegetation that has accumulated
•Known as Peat and Muck (muck is more decomposed than peat)
![Page 8: Understanding Soil Formation. Objectives Identify five factors involved in soil formation. Describe different types of parent material. Explain topography.](https://reader034.fdocuments.us/reader034/viewer/2022042717/56649e245503460f94b1357b/html5/thumbnails/8.jpg)
Topography
•Steepness(degree), length, shape, direction
•Nearly level soils are generally poorly drained
•Moderate to steep slopes are generally well drained
![Page 9: Understanding Soil Formation. Objectives Identify five factors involved in soil formation. Describe different types of parent material. Explain topography.](https://reader034.fdocuments.us/reader034/viewer/2022042717/56649e245503460f94b1357b/html5/thumbnails/9.jpg)
Time / Weathering•Physical Weathering
•Temperature, Water, Wind,
•Freeze/Thaw
•Chemical Weathering
•Rainwater is mildly acidic
•Oxidation
![Page 10: Understanding Soil Formation. Objectives Identify five factors involved in soil formation. Describe different types of parent material. Explain topography.](https://reader034.fdocuments.us/reader034/viewer/2022042717/56649e245503460f94b1357b/html5/thumbnails/10.jpg)
Climate•Rainfall - slowly by surely erodes
•Wind wears away at rock
•Hot Summer/cold Winter - Freeze/Thaw
•Humid area - more leaching than dry areas
![Page 11: Understanding Soil Formation. Objectives Identify five factors involved in soil formation. Describe different types of parent material. Explain topography.](https://reader034.fdocuments.us/reader034/viewer/2022042717/56649e245503460f94b1357b/html5/thumbnails/11.jpg)
Organisms•Plants, Insects, Organisms
•Greatest affect on soil formation is the plants that once grew in it
•Native Vegetation
![Page 12: Understanding Soil Formation. Objectives Identify five factors involved in soil formation. Describe different types of parent material. Explain topography.](https://reader034.fdocuments.us/reader034/viewer/2022042717/56649e245503460f94b1357b/html5/thumbnails/12.jpg)
•Example: common native vegetation in the Midwest.
•Tall Prairie Grass
•Prairie Soils
•Deciduous-hardwood forests
•Timber Forests
•How is the Midwest different from Northern Utah?
Organisms