Jan 28, 2020 8:30 am732 views
“Huh.”
Looking down at the material in the glass beaker, I’m perplexed. I’m trying to determine the ratio of silt to clay in my sample and something isn’t right. The sediments in my beaker came from the floor of a religious shrine in Cahokia, an ancient Native American metropolis that grew up in and around present-day St. Louis, 900-1,000 years ago.