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Residual Soils
The soil remenints of when the weathering process of rock is faster than that transport process induced by water wind and gravity
Glacial Soils
  • Glaciers Transported Soils as they moved
  • Three Types: Till, Glaciofluvial, Glaciomarine soils (Glacioacustrine soils)
Till
  • Soil deposited Directly by glacier
  • wide vareity of particle sizes from clay to gravel
Glaciofluvial Soils
  • When glaciers melted they generated large quantities of runoff
  • This water eroded the till and deposited it downs stream
  • contains mainly sands and gravels
GlacioMarine (Glacioacustrine) soils
  • Fine grained portions of till that washed into the ocean or lake and settled on the bottom
  • Varved clay (layered silt and clay)
  • These soils are soft and compressible
  • Highly sensitive
Aluvial Soils (Fluvial or alluvium)
  • Transported to present position by rivers and streams
  • Rivers have different flow at differet rates depending on season
  • therefore there are a variety of gravels, sands, silts and clays
  • Good building material
  • often horizontal layrs depending on speed of the river(season)
Lacustrine Soils
  • Soils deposited beneath lakes
  • primarily silt and clay
Marine Soils
  • Deposited underwater, except they form in the ocean
  • mainly contain sensitive clays
Aeolian Soils
  • Soils deposited by wind
  • Three types are suspension, saltation
  • creep
Suspension (Aeolian Soil)
Saltation
Creep
  • occurs when wind lifts individual silt particles
  • Intermediate process where soil particles become temporarily airborn then fall back
  • Particles to large to be lifted so the wind rolls them across soil
Coluvial Soils
  • Soil transported downslope by gravity
Sensitive Clays
  • Very unstable clays
  • contain more salt
  • not a good material
Quick Clay
  • Highly Sensitive Clay
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