Rankers
Encyclopedia
Rankers are soil
s developed over non-calcareous
material, usually rock. They are regarded in some soil classifications as lithomorphic soils, a group which also includes rendzina
s, similar soils over calcareous material. They are often called A/C soils, as the topsoil
or A horizon is immediately over a C horizon (unaltered parent material
).
Soil
Soil is a natural body consisting of layers of mineral constituents of variable thicknesses, which differ from the parent materials in their morphological, physical, chemical, and mineralogical characteristics...
s developed over non-calcareous
Calcareous
Calcareous is an adjective meaning mostly or partly composed of calcium carbonate, in other words, containing lime or being chalky. The term is used in a wide variety of scientific disciplines.-In zoology:...
material, usually rock. They are regarded in some soil classifications as lithomorphic soils, a group which also includes rendzina
Rendzina
Rendzina is a dark, grayish-brown, humus-rich, intrazonal soil. It is one of the soils most closely associated with the bedrock type and an example of initial stages of soil development...
s, similar soils over calcareous material. They are often called A/C soils, as the topsoil
Topsoil
Topsoil is the upper, outermost layer of soil, usually the top to . It has the highest concentration of organic matter and microorganisms and is where most of the Earth's biological soil activity occurs.-Importance:...
or A horizon is immediately over a C horizon (unaltered parent material
Parent material
In soil science, parent material is the underlying geological material in which soil horizons form...
).