Posted in Blog Post, Excavation, Field, People

Lucky number 13 (excavation units)

– post by Kaitlyn L.

Thursday was an incredibly productive day in the field. We have 13 units in active or suspended excavation (meaning we stopped excavation because we identified features and will return to them during the last week). The excavation units are where the art of excavation actually takes place.

Units under active excavation by FSU Archaeological Field School students and volunteers with the National Park Service and Friends of the St Marks National Wildlife Refuge.


Today, all of the groups were schnitting (shovel skimming), troweling, measuring elevations/depths of units, plotting artifacts and features in situ, and screening through soil searching for the artifacts excavated from the units. Schnitting is a very important skill learned in field school where the excavator gently shaves off centimeters of soil, so as not too dig too deep. This allows us to identify features as they first appear. Once a layer of excavation is finished the trowels are used to create straight walls and sharp corners and to produce a smooth surface in the floor of the unit.

FSU Archaeological Field School student, Julian S., trowels the floor of an excavation unit in preparation for pictures. Notice the sunny spots in the unit. We use the blue tarp (top of picture) to block out the sun and “shade” the units to allow for better pictures.


Excavation units must be as smooth and level as possible to see the features in the soil. Features are changes in texture, composition, and or color of the soil and/or artifact density within the excavation unit. Many of the excavation units today revealed features of much lighter colored soil and of much darker colored soil than the normal soil found throughout the site. So why are features important? They are not tangible artifacts like ceramics or lithic, but they do tell us a wide array of information about the site and those who lived in it. Features tell us about human activities at the site, such as where a cooking fire or house wall once stood. Features can also depict where artifacts that no longer exist were once placed. The positioning of living, ceremonial, and working areas can be determined by the features that are found within the excavation units. Features map out what the layout of the site once was. Our goal is to identify features over the next few weeks, and during the last week document them via mapping and photography, and then excavate them taking 100% sample of the feature for further processing in the lab. We’ll post more on these features, what we are learning from them, and how we process them in the coming days. After today, we are off for a much needed rest over Memorial Day weekend!



Associate Professor of Anthropology at Florida State University Zooarchaeologist Awesome dessert maker