Class Notes (923,845)
CA (543,289)
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Geography (1,039)
GGR100H1 (141)
Lecture

soils

2 Pages
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Department
Geography
Course Code
GGR100H1
Professor
Joseph Leydon

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Geography Lecture
March 29, 2011
Soil
Pedogenic processes (internal)
Ground water can come upwards
Translocation
Eluviation: downward transport of fine particles from the Ae horizon
External controls on pedogenesis
Climate
Vegetation
Parent material/local geology
Relief/topography
Time
Drainage is important
Climate
More water= more leeching
The more rain you have, you will have bigger differences between the
horizons
Hotter temperature = increased chemical reactions
Vegetation
Composition of the vegetation
Ex. Tree bark is more resistant (more fibrous) to decomposition than
grasses
Grassland soils have deep organic trasloation
Coniferious needles -> acid soils
Parent material
Minerals vary in their resistance to weathering
Rocks vary in their chemical composition
Texture of unconsolidated sediments
Relief
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Description
Geography Lecture March 29, 2011 Soil Pedogenic processes (internal) Ground water can come upwards Translocation Eluviation: downward transport of fine particles from the Ae horizon External controls on pedogenesis Climate Vegetation Parent materiallocal geology Relieftopography Time Drainage is important Climate More water= more leeching The more rain you have, you will have bigger differences be
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