Carver matrix Professor Martin Carver of the University of York has also developed a seriation diagram, known as the Carver matrix (not to be confused with the military term also named CARVER matrix). This diagram, which is based on the Harris matrix, is designed to represent the time lapse in use of recognizable archaeological entities such as floors and pits. Like Edward Harris, he used contexts numbered and defined on site as the basic elements of the sequence, but he added higher order groupings ("feature" and "structure") to increase the interpretive power. Several other people, such as Norman Hammond, looked to develop similar systems in the 1980s and 1990s. See also Archaeological plan Archaeological association Cut (archaeology) Archaeological section Feature (archaeology) Chronological dating Reverse stratigraphy References and sources References Sources The MoLAS archaeological site manual MoLAS, London 1994. . Rb 128pp. bl/wh Harris, Edward C.; (1979 & 1989). Principles of Archaeological Stratigraphy. 40 figs. 1 pl. 136 pp. London & New York: Academic Press. Harris, Edward C.; Brown III, Marley R.; & Brown, Gregory, J. (eds.) (1993). Practices of Archaeological Stratigraphy. London: Academic Press. . Roskams, Steve (Ed.) (2000). Interpreting Stratigraphy. Papers presented to the Interpreting Stratigraphy Conferences 1993-1997. BAR International Series 910. . External links Adrian Chadwick - Archaeology at the Edge of Chaos - Further Towards Reflexive Excavation Methodologies R. Thorpe - Which Way is Up? Context Formation & Transformation: The Life and Deaths of a Hot Bath in Beirut Free download of Principles of Archaeological Stratigraphy Matrix builder programs Harris Matrix Composer ArchEd Stratify - Check and Layout of Stratigraphic Data stratigraphr - Reading, analysing, and visualising stratigraphies (Beta version) Methods in archaeology