Michigan Dept. of Environment, Great Lakes, and EnergyMajor Structural Features : Regional and large scale structural features which are known to exist across the Michigan Basin and Great Lakes area. Esch, J.M., 2010, Michigan Basin Structural Lineaments Map, AAPG Eastern Section Meeting, September 2010 Kalamazoo, Michigan; Abstracts and Programs. Structural Lineaments : Linear subsurface structural features evident from formation structural contour mapping, residual formation structural contour mapping, formation isopach mapping and analyses of regional and local geophysical surveys. Esch, J.M., 2010, Michigan Basin Structural Lineaments Map, AAPG Eastern Section Meeting, September 2010 Kalamazoo, Michigan; Abstracts and Programs. Precambrian-Paleozoic boundary: Precambrian/Paleozoic Boundary in Michigan based on the Milstein, R. L. (compiler), 1987, Bedrock geology of southern Michigan: Geological Survey Division, Michigan Dept. of Natural Resources Reed, R. C., and Daniels, J. (compilers), 1987, Bedrock geology of northern Michigan: Geological Survey Division, Michigan Dept. of Natural Resources. Bedrock valleys: Buried bedrock valleys derived from bedrock topography, drift thickness mapping in Michigan, from: Esch, J.M., 2013, Buried Bedrock Valleys of Michigan Geological Society of America Abstracts with Programs. Vol. 45, No. 4, p.4 May 1, 2013 For more information, visit Michigan.gov/EGLE/Maps-Data/GeoWebFace or contact EGLE-GeoWebFace@michigan.gov . Field Name Field Description OBJECTID ESRI ID Number FeatureType Feature type: Includes major faults, arches, lineaments, bedrock valley, precambrian-paleozoic boundary. FeatureName Name of specific feature if available.ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/19ed3cf472df47e2bacb23f34e4f66f0_1engState of Michigan Open Data PortalPublicMichigan Bedrock Geology Features [Michigan]Web servicesMichiganLast Modified: 2025-09-24