Definitions for "Surficial"
Characteristic of, pertaining to, formed on, situated at, or occurring on the earth's surface; especially consisting of unconsolidated residual alluvial or glacial deposits lying on bedrock.
Taking place on or relating to the surface of the earth
pertaining to or lying on the surface of the earth. Surficial geology is the study of surficial deposits including soils and is applied to the study of bedrock at or near the surface of the earth.