Geoarchaeology's a sub-field of archaeology which uses the techniques and subject matter of Geography, geology and other earth sciences to examine topics which inform archaeological knowledge and thought. Geoarchaeologists study the natural physical processes that affect archaeological sites such as geomorphology, the formation of sites through geological processes and the effects on buried sites and artifacts post-deposition. Geoarchaeologists' work frequently involves studying soil and sedim… (More on Geoarchaeology)