The reason why the sand dune at Michigan State University was not unearthed until recently is because it was buried beneath a grove of pine trees. It wasn’t until a storm this spring (2009) damaged some of the trees that researchers excavated to determine how the replacement might disrupt the site, and any possible artifacts. Sand samples ended up revealing that the dunes were between 16,100 and 12,400 years old.
In the early 1900s, a forestry professor planted the trees to keep the dune from eroding. His efforts were successful until the sand began being lost due to development and now only one acre that was protected by the trees remains.
Click here to cancel reply.
Sorry,At this time user registration is disabled. We will open registration soon!
Don't have an account? Click Here to Signup
© Copyright GreenAnswers.com LLC