Overview

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Natural in archaeology is a term to denote a horizon in the stratigraphic record representing the point before which there is no anthropogenic activity on site and the archaeological record ends. Natural is often the underlying geological makeup of the site and is formed by geological processes. It is the goal of complete excavation to remove the entirety of the archaeological record all the way to natural, thus leaving only the natural deposits of pre-human activity on site. If the excavation is related to development, the impact assessment may stipulate excavation will cease at a certain depth, because the nature of the development will not disturb remains below a certain level; such an excavation may not reach natural or sterile. Natural can be a relative term. On urban sites where research interests may make a detailed examination of the earliest part of the record impractical, prehistoric or rudimentary human activity may go unrecorded compared to an equivalent horizon on a rural site for which the study team's agenda is to look for prehistoric evidence. The visibility of features in natural is to some extent a function of chemical and soil process over time.

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