BEDROCK GEOLOGY OF MICHIGAN PLV CHC KEWEENAW BEDROCK GEOLOGY OF THE EASTERN UPPER PENNINSULA MAC MACKINAC BRECCIA BBF BOIS BLANC FORMATION CHC GIF GARDEN ISLAND FORMATION PLV BIG BASS ISLAND GROUP SAL SALINA GROUP SID SAINT IGNACE DOLOMITE PAC POINT AUX CHENES SHALE NSF ENG ENGADINE GROUP HOUGHTON MQG MANISTIQUE GROUP BBG BURNT BLUFF GROUP CHC CHS CABOT HEAD SHALE FSS MND MANITOULIN DOLOMITE AGR QUS QUEENSTON SHALE BBF NSF CHC JAC NSF BHD BIG HILL DOLOMITE OBF STF STONINGTON FORMATION BARAGA AVS JAC FSS AGR USM UTICA SHALE MEMBER GOGEBIC MUN ONTONAGON MGF TMP CSM COLLINGWOOD SHALE MEMBER SCF EVC MGF IIF PDC TRN TRENTON GROUP SAQ CHO NIF LUCE BRG PAF NIF AGR SCF CSM TRN JAC BRG BLACK RIVER GROUP MGF GDQ JAC USM PDC AMF PRAIRIE DU CHIEN GROUP AVS MARQUETTE MCG BRG AGR NIF AGR BIF ALGER STF CHIPPEWA TMP TREMPEALEAU FORMATION AGR BHD HEM QUS AGR IRON MGF MND MUN MUNISING FORMATION CHS AGR INT SCHOOLCRAFT BHD MCG BBG BDG DCF DICKINSON BBG AVS ENG QUS PRG RAD MND RAD MACKINAC BEDROCK GEOLOGY OF THE AVS BBG CHS QUF MQG WESTERN UPPER PENNINSULA MQG CG RIF M TMP DELTA PAC ENG MAC MACKINAC BRECCIA BDG JAC JACOBSVILLE SANDSTONE CHO MAC AGR SID FSS FREDA SANDSTONE SAL ENG GIF NSF NONESUCH FORMATION MGF BBF INT CHC COPPER HARBOR CONGLOMERATE BBG BBF DRG OBF OAK BLUFF FORMATION BBF DRG PLV PORTAGE LAKE VOLCANICS QUF MQG BLS BBG ENG EMMET SCF SIEMENS CREEK FORMATION MENOMINEE INT INTRUSIVE MUN TRG DDL QUF QUINNESEC FORMATION PRG PAINT RIVER GROUP CHEBOYGAN PRESQUE RIF RIVERTON IRON FORMATION ANT ISLE BIF CHARLEVOIXCWT ANT BIJIKI IRON FORMATION BER NIF NEGAUNEE IRON FORMATION IIF IRONWOOD IRON FORMATION BER DCF DUNN CREEK FORMATION BED ELL ALPENA BDG BADWATER GREENSTONE OTSEGO MGF MICHIGAMME FORMATION MONTMORENCY TRG ANTRIM S GDQ GOODRICH QUARTZITE LEELANAU CWT UN ANT AMF AMASA FORMATION HEM HEMLOCK FORMATION MCG MENOMINEE & CHOCOLAY GROUPS GRAND ALCONA EVC EMPEROR VOLCANIC COMPLEX KALKASKA CRAWFORD OSCODA TRAVERSE SAQ SIAMO SLATE & AJIBIK QUARTZITE BENZIE ELL MIF PAF PALMS FORMATION CWT CHO CHOCOLAY GROUP RAD RANDVILLE DOLOMITE AUM ARCHEAN ULTRAMAFIC MISSAUKEE IOSCO BEDROCK GEOLOGY OF THE WEXFORD OGEMAWCWT AGR ARCHEAN GRANITE & GNEISSIC LOWER PENNINSULA MANISTEE MIF ROSCOMMON AVS ARCHEAN VOLCANIC & SEDIMENTARY RDB RED BEDS GRF GRAND RIVER FORMATION ARENAC BAY SAG SAGINAW FORMATION BAY BAYPORT LIMESTONE MASON GLADWIN MIF MICHIGAN FORMATION LAKE OSCEOLA CLARE MAR MARSHALL FORMATION BAY CWT COLDWATER SHALE HURON SUN SUNBURY SHALE SAG SUN BER BEREA SANDSTONE & BEDFORD BAY BED BEDFORD SHALE MECOSTA SAG MIDLAND CWT ELL ELLSWORTH SHALE OCEANA RBD ISABELLA Y A ANT ANTRIM SHALE B NEWAYGO SAG TRG TRAVERSE GROUP MIF BLS SANILAC BELL SHALE TUSCOLA DDL DUNDEE LIMESTONE SAGINAW MAR DRG DETROIT RIVER GROUP MONTCALM MUSKEGON GRATIOT TRG SSS SYLVANIA SANDSTONE MAC MACKINAC BRECCIA ANT BBF BOIS BLANC FORMATION BAY LAPEER GIF GARDEN ISLAND FORMATION ST. BED BIG BASS ISLAND GROUP GENESEE CLAIR MAR SAL SALINA GROUP OTTAWA KENT IONIA CLINTON SHIAWASSEE GRF MACOMB R BE OAKLAND LIVINGSTON BARRY EATON INGHAM SUN BED ALLEGAN MIF ANT BAY TRG DDL VAN WASHTENAW BUREN KALAMAZOO CALHOUN JACKSON CWT WAYNE DRG GIF TRG ELL SSS ANT ST. BIG CASS BRANCH LENAWEE MONROE JOSEPH HILLSDALE SAL I BERRIEN SOURCE Bedrock Geology of Michigan 1987, 1:500,000 scale, which was compiled from a variety of sources by the Michigan Department of Environmental Quality, Office of the Geological Survey. Geo_Data Services, Michigan Center for 015 30 60 90 120 Geographic Information, Department Miles of Information Technology DATE: 10/01/2005.