- published: 25 Oct 2009
- views: 4317180
Soil is a natural body that consists of layers (soil horizons), composed primarily of minerals, which differ from their parent materials in their texture, structure, consistency, color, chemical, biological and other physical characteristics. The end result, soil, is the end product of the influence of the climate (temperature, precipitation), relief (slope), organisms (flora and fauna), parent materials (original minerals), temperature, and time. In engineering, soil is referred to as regolith, or loose rock material. Strictly speaking, soil is the depth of regolith that influences and has been influenced by plant roots and may range in depth from centimeters to many meters.
Soil is composed of particles of broken rock (materials) that have been altered by chemical and mechanical processes that include weathering, erosion and precipitation. Soil is altered from its parent material by the interactions between the lithosphere, hydrosphere, atmosphere, and biosphere. It is a mixture of mineral and organic materials that are in solid, gaseous and aqueous states. Soil is commonly referred to as earth or dirt; technically, the term dirt should be restricted to displaced soil.
Shades are rising above my head
Voices whisper a name
A coat of ice is covering me
A breath of decay drifts away
"The soil is your father, don't try to escape
Give in our will and awake"
Paralyzed by agony
When bones broke through my skin
My splintering skull was the last thing I felt
I leave my mortal remains
"A spiral of darkness will lead to your home
Open the gate to that world
The soil is your father, don't try to escape
Give in our will and awake"