Postburial

Postburial refers to the period and processes that affect a corpse or remains after burial. The term is used across disciplines such as archaeology, forensic anthropology, and paleontology to describe what happens to material after it is placed underground.

In archaeology and taphonomy, postburial processes include decomposition, preservation, and skeletalization, as well as secondary chemical changes in the surrounding soil. The trajectory of these changes depends on burial depth, whether the body is cremated or coffined, local climate, moisture, and soil chemistry.

Environmental and biotic factors drive the rate and type of postburial change. Temperature and humidity influence microbial activity; soil pH and mineral content affect preservation; bioturbation by roots or animals and insect activity can physically disrupt remains or introduce coloration and microdeformations. Some environments promote preservation (cold, dry, waterlogged, or peat conditions) while others accelerate decay.

In forensic contexts, accurately assessing postburial interval is important but challenging. Analysts use taphonomic indicators such as insect succession (where present), bone weathering, staining, and soil changes, alongside historical or contextual evidence. Burial conditions, containerization, and forensic entomology all constrain estimates.

Research on postburial processes combines field observation, experimental taphonomy, and laboratory analysis to interpret site formation, burial practices, and post-depositional disturbance. Understanding postburial dynamics helps archaeologists reconstruct past events and helps forensic scientists interpret evidence at crime or disaster scenes.