Official title and information are available only for Plus and Premium subscribers.
Patent Granted In geology and related fields, a stratum (plural: strata) is a layer of sedimentary rock or soil with internally consistent characteristics that distinguish it from other layers. The "stratum" is the fundamental unit in a stratigraphic column and forms the basis of the study of stratigraphy.
To see the additional information details please login and subscribe to a Plus or Premium account.
