Massive

Massive means that there is no arrangement of soil particles into "real" structural units. This is often found deep in the soil or when the soil particles are cemented together. Another type of massive structure is called massive-rock controlled fabric. Massive-rock controlled structure describes soil developed from saprolite, which is weather bedrock typically found in the Piedmont of the southern United States. Unlike simple massive structure, massive-rock controlled fabric may have a preferred orientation due to the minerals present in the parent rock. The material may easily break into the individual mineral grains and may not be as limiting to water movement or root growth as a truly massive soil structure.