Legend (BaseMap/General_Geology)

Michigan Watersheds (0) Great Lakes Watershed (1) Quaternary Geology Features (2) DRUMLINS ESKERS SHORELINE SINKHOLES STRIATIONS/GROOVES End Moraine and Ice Contact Outwash (3) Quaternary Geology (4) Peat and muck Postglacial alluvium Dune sand Lacustrine clay and silt Lacustrine sand and gravel Glacial outwash sand and gravel and postglacial alluvium Ice-contact outwash sand and gravel Fine-textured glacial till End moraines of fine-textured till Medium-textured glacial till End moraines of medium-textured till Coarse-textured glacial till End moraines of coarse-textured till Thin to discontinuous glacial till over bedrock Artificial fill Exposed bedrock surfaces Water Part 303 Final Wetlands Inventory (5) Wetlands as identified on NWI and MIRIS maps Soil areas which include wetland soils Wetlands as identified on NWI and MIRIS maps and soil areas whch include wetland soils MNFI Landcover, Circa 1800 (6) ASPEN-BIRCH FOREST BEECH-SUGAR MAPLE FOREST BEECH-SUGAR MAPLE-HEMLOCK FOREST BLACK ASH SWAMP BLACK OAK BARREN CEDAR SWAMP EXPOSED BEDROCK GRASSLAND HEMLOCK-WHITE PINE FOREST HEMLOCK-YELLOW BIRCH FOREST JACK PINE-RED PINE FOREST LAKE/RIVER MIXED CONIFER SWAMP MIXED HARDWOOD SWAMP MIXED OAK FOREST MIXED OAK SAVANNA MIXED PINE-OAK FOREST MUSKEG/BOG OAK-HICKORY FOREST OAK/PINE BARRENS PINE BARRENS SAND DUNE SHRUB SWAMP/EMERGENT MARSH SPRUCE-FIR-CEDAR FOREST SUGAR MAPLE-BASSWOOD FOREST SUGAR MAPLE-HEMLOCK FOREST SUGAR MAPLE-YELLOW BIRCH FOREST WET PRAIRIE WHITE PINE-MIXED HARDWOOD FOREST WHITE PINE-RED PINE FOREST WHITE PINE-WHITE OAK FOREST Undetermined Waterfalls (7) Outcrops and Thin Drift (8) Bedrock outcrop Thin drift over bedrock Bedrock waterfall Bedrock outcrop within polygon Structual Lineaments (9) Major Structual Features (10) Major Faults Arches Cuestas (11) Midcontinent Rift (12) Sedimentary Basins (13) Bedrock Geology (14) RED BEDS GRAND RIVER FORMATION SAGINAW FORMATION BAYPORT LIMESTONE MICHIGAN FORMATION MARSHALL FORMATION COLDWATER SHALE SUNBURY SHALE BEREA SANDSTONE & BEDFORD BEDFORD SHALE ELLSWORTH SHALE ANTRIM SHALE TRAVERSE GROUP BELL SHALE DUNDEE LIMESTONE DETROIT RIVER GROUP SYLVANIA SANDSTONE MACKINAC BRECCIA BOIS BLANC FORMATION GARDEN ISLAND FORMATION BASS ISLAND GROUP SALINA GROUP SAINT IGNACE DOLOMITE POINT AUX CHENES SHALE ENGADINE GROUP MANISTIQUE GROUP BURNT BLUFF GROUP CABOT HEAD SHALE MANITOULIN DOLOMITE QUEENSTON SHALE BIG HILL DOLOMITE STONINGTON FORMATION UTICA SHALE MEMBER COLLINGWOOD SHALE MEMBER TRENTON GROUP BLACK RIVER GROUP PRAIRIE DU CHIEN GROUP TREMPEALEAU FORMATION MUNISING FORMATION JACOBSVILLE SANDSTONE FREDA SANDSTONE NONESUCH FORMATION COPPER HARBOR CONGLOMERATE OAK BLUFF FORMATION PORTAGE LAKE VOLCANICS SIEMENS CREEK FORMATION INTRUSIVE QUINNESEC FORMATION PAINT RIVER GROUP RIVERTON IRON FORMATION BIJIKI IRON FORMATION NEGAUNEE IRON FORMATION IRONWOOD IRON FORMATION DUNN CREEK FORMATION BADWATER GREENSTONE MICHIGAMME FORMATION GOODRICH QUARTZITE AMASA FORMATION HEMLOCK FORMATION MENOMINEE & CHOCOLAY GROUPS EMPEROR VULCANIC COMPLEX SIAMO SLATE & AJIBIK QUARTZITE PALMS FORMATION CHOCOLAY GROUP RANDVILLE DOLOMITE ARCHEAN ULTRAMAFIC ARCHEAN GRANITE & GNEISSIC ARCHEAN VOLCANIC & SEDIMENTARY Elevation (feet) (16) 1971 1755 1538 1322 1105 889 672 456 Hillshade of Elevation (17) High : 254 Low : 0 Bouguer Gravity Anomaly Map (milligals) (19) High : 28.5 milligals Low : -95.9 milligals Bourguer Gravity Anomaly Map Hillshade (20) High : 0.999908 Low : -0.637220 Magnetic Anomaly Map (nanoteslas) (22) High : 13844.2 nanoteslas Low : -2264.2 nanoteslas Magnetic Anomaly Map Hillshade (23) High : 0.999996 Low : -0.703249