University of MichiganDigital version of the Farrand and Bell Quarternary Geology maps of Northern and Southern Michigan, at a scale of approximately 1:500,000.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/c0d049f688154fa19b6639b32f23a2c7_0engUM Matthaei Botanical Gardens and Nichols ArboretumPublicQuaternary Geology of Michigan [Michigan]Web servicesMichiganLast Modified: 2021-02-01