• Spruce wetlands along the shorelines of postglacial Lake Chicago
• Two-Creekan and Younger Dryas-age tree-ring records
The Brown’s Sandpit Site (BSP) is located adjacent and immediately south of Town of Pines in northern Indiana. The site was originally discovered by Ken Cole of the USGS in the 1980s, who collected some wood samples, including stumps. The dates indicate wood as old as Two Creeks age and as young as Younger Dryas age (Fig. 1). We visited the site on June 2, 2004, and May 28 and June 11, 2005, and excavated over 50 wood specimens. Twenty-one spruce specimens were crossdated into a 173-year and a 119-year tree-ring width records dated with carbon-14 ca. 13,000 and 13,400 years ago, respectively.