In May 2011, CAIRN was invited by John Kelly to use the pXRF scanner that is under loan from Olympus, to analyze basalt samples from a site near Cahokia Mounds to those from a region near Lake Superior in Canada. This elemental analysis may tell John if the basalt came from a local source within Mo. or hails from glacial erratics deposited long ago in the region.
This was the first test of the new Olympus Innov-X Delta pXRF by the CAIRN team. Washington University is a well-known research university located in St. Louis, Missouri.
This research was made possible through a grant from The Missouri Humanities Council with support from the National Endowment for the Humanities.