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Mississippi Valley Archaeology Center

Datum

October 26, 2017

ExcavatingThe site datum is the master control point on an archaeological site into which all measurements are eventually tied. With the availability of GPS units, the datum location can be recorded with great accuracy.  Excavations within the site have their own datum which are tied to the site datum.  In the pictured unit excavation the chaining pin in the lower right is the unit datum.  All measurements for the unit are referenced from this point.