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Soils of glacial origin
Parent Material
Topography
Organisms affecting soil
100
Loess
What is a parent material that has excellent water-holding capacity?
100
the disintergration and decomposition of rocks
How is parent material formed?
100
The slope characteristic of soil
What is topography?
100
Native vegitation
What is the plant that once grew there, that now affect the soil?
200
Glacial till
What is parent material that was physically moved by the glacier itself.
200
the way it was moved and scattered.
How is parent material classified?
200
moderate sloping to steep
Soils on what type of slope are usually well drained?
200
Tall prairie grass Deciduous-hardwood forests
What are the 2 types of native vegitation in Illinois?
300
Outwash
What is finer materials-silt and clay- that were deposited in lake beds.
300
Illinoisan and Wisconsian
What are the 2 major glaciers that had the greatest influence on present day soils in Illinois.
300
degree or steepness length
What are some of the influences that affect the amount of rainwater runoff that enter soil?
300
Prairie soil Timber soil
What are the soils in Illinois called?
400
Loess
What is the single most desirable soil of parent material?
400
Loess Glacial till Outwash
What are the three types of parent material?
400
steep slopes
What type of slopes have higher amount amounts of runoff and erosion than those on the topography level?
400
Earthworms, ground squirrels...
What types of animals affect the development of soil?