Humans As Geologic Agents (Reviews in Engineering Geology, 16, Band 16) : Ehlen, Judy, Haneberg, William C., Larson, Robert A Humans as major geological and geomorphological agents in the Anthropocene: The... Geological Action Of The Human Being. Humans As Geologic Agents Since the first prehistoric people started to dig for stone to make implements, rather than pick up loose material, humans have modified the landscape through excavation of rock and soil, generation of waste and creation of artificial ground