A soil profile having two sola, one above the other is known as

The solum (plural, sola) in the soil profile consists of the surface and subsoil layers that have undergone the same soil forming conditions. The base of the solum is the relatively un-weathered parent material.
The soil profile is a vertical section of the soil that contains all the secrets of the soil.
A soil profile having two sola, one above the other is known as Bisequem profile.