Differences in soils are the result of the interaction of many factors : climate, organisms, parent material, relief and time.
42.
An entisol has no diagnostic horizons, and most are basically unaltered from their parent material, which can be unconsolidated sediment or rock.
43.
Technosols are " mainly characterised by anthropogenic parent material of organic and mineral nature and which origin can be either natural or technogenic ."
44.
Pedologists see soil formation or soil properties as a function of regional climate, biota, topography, parent material, time and other variables.
45.
Over geolocic time, liquefaction of soil material due to earthquakes could provide a dense parent material in which the fragipan may develop through pedogenesis.
46.
Horizon C is made up of the parent material, which is generally permeable and non-or slightly acidic, for example clay loam.
47.
For soils of ssp . " album ", the parent material is typically a marine shale, especially the Moreno shale formation.
48.
Of course, the parent material also has an effect, and hard acidic rocks give rise to more acidic soils than do the softer sandstones.
49.
The dominant geology within the site is Dwyka Tillite, a glacial conglomerate parent material that is base-rich, hard and resistant to weathering.
50.
Owing to a relatively dry climate and alkaline ( mostly dolerite ) parent material, these soils are relatively unleached and contain lime in the deeper subsoil.
