In this program we will discuss how the geologic history of Michigan going back over 2 billion years influenced the movement of the glaciers 2 million to 10 thousand years ago.  We will identify how the glaciers sculpted the great lakes basins and upland areas and created the wide variety of deposits we see in Michigan.  In particular, we will review how glacial landforms, soils, and hydrological processes have influenced the spatial patterning of ecosystems and their characteristic flora.