“Archaeological Excavation: Introduction to Archaeology.” Canadian Museum of History. Web. n.d. 20 April 2015.
In this picture you can see an Archaeologist taking samples from the grid (the square boxes stringed along the site) to be tested. The grid is setup: “in general, however, to record the relationships between artifacts, features and samples, archaeologists first map and grid a site, establishing squares of uniform dimensions” (Canadian Museum of History). They then proceed to research the samples taken: “then they excavate the deposits within these squares and record the position of what they find in terms of its distance and depth from one or more fixed reference points” (Canadian Museum of History). This process is known as Stratigraphy: “stratigraphy is a basic concept of archaeology. Simply, this means that the oldest remains at a site are found at the deepest levels, with the more recent in progressive layers one on top of the other, up to the present-day surface of the ground” (Canadian Museum of History). Stratigraphy is used in every excavation.