soil types :D

idk why I'm making this, there is no relevance to my actual classes/clubs in soil

gelisols

contain permafrost

Histosols

mainly composed of organic matter in upper region, bogs, swamps, etc

alfisols

similar location and characteristic to ultisols, but less weathered and acidic

andisols

formed from volcanic materials, very rare, extremely fertile, holds rainfall and nutrients very well

aridisols

found in dry areas, lack weathering, contain salt or carbonates

entisols

little to no soil development

inceptisols

moderate soil development and lack significant clay, wide range of characteristics

mollisols

prarie/grassland soil, dark surface horizon, highly fertile and rich in bases

oxisols

tropical and subtropical regions, dominated by iron oxides, quartz and clay weathered minerals, low fertility

spodosols

organic matter and aluminum, acidic organic matter interacts with rainfall dissolving metals, taiga

ultisols

formed in humid areas, very weathered, low fertility, relatively acidic and some clay

vertisols

clay rich soil that sinks and swells exponentially due to water, can form large cracks when dry, highly fertile but water may pool

sand

largest particle size

silt

size between sand and clay

loam

roughly equal proportions of sand, silt and clay

porosity

ability to hold a fluid

clay

smallest particle size

gelisol

histosols

spodosols

andisols

alfiisols

aridisols

vertisols

ultisols

oxisols

entisols

inceptisols

mollisols

solum

A + B horizons, affected by soil formation

loess

Wind-deposited silt that forms fertile soils

fragipans

Soil layers with dense, brittle texture that restrict root growth and water movement