The broader surface features are expressions of geologic formations of glacial age. The more hilly areas, for the most part are moraines; the level plains are underlain by glacial outwash deposits; and the other parts of the level plains of sandy drift, were probably deposited under the ice sheet. This topography is well suited for a diverse agriculture, recreation and forest industry. This topography also makes for a beautiful setting in which to live.
For an explanation of the general geology of Michigan, go to the DEQ Geological survey Division web site.
DEQ Geological Survey Division