Top soil
The parent material layer is the unconsolidated material from which the soil develops. It is the source material that undergoes weathering processes to form soil over time. The characteristics of the parent material influence the properties of the soil that develops from it.
Top soil because it gives all other layers material and organics.
After subsoil comes the parent material, which is the bedrock or unconsolidated material that lies beneath the subsoil. The parent material is the layer from which the soil is derived through weathering and other geological processes.
The deepest layer in soil is called the parent material or bedrock. This layer is comprised of solid rock and is located beneath all other soil horizons.
The four soil layers are topsoil, subsoil, parent material, and bedrock. Topsoil is the uppermost layer that contains the most nutrients for plants, while subsoil is beneath it and contains less organic matter. Parent material is the layer that soil is derived from through weathering, and bedrock is the solid rock beneath all the other layers.
Organic Layer - plant litter Surface Layer - mineral and organic mixture Subsoil - contains clay, iron, aluminium Substratum - parent material
The parent material horizon (C horizon) is typically the thickest soil horizon, as it consists of the unconsolidated material from which the soil develops over time. It is often the deepest layer and can vary greatly in thickness depending on the location and the type of parent material.
Umm... let's see. The top layer is top-soil. The middle layer is sub-soil. The bottom layer is parent rock.... I think you've got the answer...... ;-) you're welcome!
Soil parent material is the underlying geological material from which soil is formed. It can be organic material, such as decomposed plant matter, or inorganic material, such as rocks or sediments. The characteristics of the parent material influence the properties of the resulting soil.
The layer that contains the parent material is called the C horizon. This layer consists of weathered rock and unconsolidated material from which soil develops. It lies beneath the topsoil (A horizon) and subsoil (B horizon) and serves as a source of minerals and nutrients for the overlying soil layers. The characteristics of the C horizon can significantly influence the soil's properties and its ability to support plant life.
The D horizon is the deepest soil layer in the soil profile. It consists of partially weathered bedrock or unconsolidated material. This layer is typically located below the C horizon and represents the transition between soil and the underlying parent material.
The layer of soil that is made up of only partly weathered rock is called the C horizon, also known as the parent material layer. This layer is located below the B horizon and consists of partially weathered rock fragments that are not yet fully decomposed into soil.