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Soil

QuestionAnswer
5 factors of soil formation Climate, Time, Parent Material, Topogrpahy, Living Organisms
O horizon Consists of organic material
A horizon Known as topsoil, contains minerals and leeching happens here
B horizon Known as subsoil, lighter colour, when minerals leech they gather here in an iron pan
C horizon Contains parent material, therefore it’s rocky
R horizon Bedrocks solid
Ombrotrophic peat PH less than four, low levels of nutrients
Peat soils Acidic PH, Used mainly in forestry, poor drainage
Gley soils Poor structure, found in Cavan, usually waterlogged, formed by glaesation
Podzols Acidic due to limestone, found in mountains areas, Wicklow, prone to leeching
Limestone PH Basic PH greater than 7
Sandstone PH PH less than 7
Climate Water contributes to chiemical and physical weathering which can increase or decrease a soils ph
Living organisms Contribute to hummus when they die, natural drainage systems because of earthworms
Podzol formation Bleached A horizon due to podzolization, iron pan impermeable to water, B horizon minerals accumulate here
Brown podzolic soil A1 large quantity of organic matter present, A2 Little development in thin horizon, B2 Red brown colour due to leeching and accumulation of minerals
Podzolation
Created by: Sam Connolly
 

 



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