Figure 1From: Introduction to the Article by H.E. Wright Jr. and M.L. HeinselmanDr. Herb Wright (center) and colleagues heading towards a sediment coring point in one of the lakes in the Boundary Waters Canoe Area of Minnesota during the early1980s. Photo credit: Dr. Svante Björck (http://www.geol.lu.se/personal/seb/).Back to article page