Geoarchaeology and Bayesian Statistical Modeling of Radiocarbon Dates from 40CH171, a Multicomponent Shell-Bearing Site in Cheatham County, Tennessee

Abstract

Using multiple lines of evidence from 40CH171, including opportunistic sampling, geoarchaeology analysis, and Bayesian radiocarbon modeling, this chapter constructs a site formation process narrative based on fieldwork conducted from 2009 to 2010 by the University of Tennessee, Middle Tennessee State University, and the Tennessee Division of Archaeology. This chapter argues that the shell-bearing strata were deposited relatively close to an active channel of the Cumberland River and/or Blue Creek during the Middle Holocene (ca. 7170–6500 cal BP). This was followed by an abrupt shift to sandier sediments, indicating that deposition after the termination of the shell-bearing deposits at the Middle Archaic/Late Archaic boundary took place in the context of decreasing distance from the site to the Cumberland River and Blue Creek.