Structural plains – Structurally depressed area

1. Extensively naturally low lands
   1. Great Plain of Russia
   2. Great Plain of USA
   3. Central lowlands of Australia

Depositional Plains – Deposited by natural agents & Rise towards adjacent highlands

1. Mainly by rivers -Active erosion in the upper course causes alluvium soil deposition
   1. Alluvium plain (North china- Hwang Ho- various crops)
   2. Flood plains
   3. Deltaic plains – (Nile delta- rice, cotton), (Ganga delta- rice, jute)
2. Glaciers & Ice-sheets
   1. Outwash Plains- Mantle of unsorted fluvio-glacial sands & gravels (mostly  barren lands)
      1. Holland
      2. Northern Germany
   2. Drift Plain- Mix of boulders and clay (Fertile)
      1. Mid- west of USA
      2. East Anglia of England
3. Waves & Wind (coastal region)
   1. Coastal plain (Belgium, Netherlands, Gulf Coast USA) & (Coastal margins from Florida to Texas)
      1. Marine swamp
      2. Mud-flats
      3. Tidal plain
      4. Estuarian lowlands
   2. Loess Plateau or plain (very fine particles called loess from dessert & barren lands)
      1. Loess Plateau- North West China
      2. Loess Plain- Pampas of Argentina

Erosional Plains-

1. Peneplain (Produced in humid areas by longtime erosion of hills wearing it out to almost plain)
2. Ice scoured plains (Glaciers & ice scoured and levelled land)
   1. Plains
      1. Northern Europe
      2. Northern Canada
   2. Hollowed lakes
      1. 1.Finland is filled with 35k lakes
   3. Pediplains (Arid region-Mechanically weathering to sloping the mountains)
   4. Regs (Arid regions – wind deflations sweeps materials lowering to plain)
      1. In Africa regs dessert