KEW EENAW

HOUGHT ON

ONTON AGON BAR AGA

MARQUETT EGOGEBIC

CHIPPEW A

LU CE

ALGER

SCHOO LC RAFT

IRON

DICKIN SON

MACKIN AC

DELT A

MENOMINEEEMMET

CHEBOYGAN

PRESQUE ISLE

CHAR LEVOIX

ALPENA

MONT MORENCY

LEELANAU

OTSEGOANT RIM

GRAND TR AVERSEALCONAOSCOD ACRAW FOR DKALKASKA

BEN ZIE

IOSCOOGEMAWROSCO MMONMANIST EE MISSAUKEEWEX FOR D

ARENAC

MASON GLADWINCLAREOSCEOLALAKE

HURON

BAY

MIDLANDISABELLAOCEANA MECOST A

NEWAYGOTUSCOLA

SAN ILAC

SAGIN AW

GRAT IOTMUSKEGON MONT CALM

LAPEER

KEN T GENESEE

ST CLAIR

OTT AW A

SHIAWASSEE

CLINTO NIONIA

MACOMB

OAKLAND

LIVINGSTONINGHAMEAT ONBAR RYALLEGAN

WAYN E

WASHT ENAWJACKSONCALHOU NKALAMAZOOVAN BUR EN

BER RIENMONR OE

LENAW EEHILLSDALEBRANCHST JOSEPHCASS

BEDROCK GEOLOGY OFLOWER PENINSULA

SALINA GROUP

BASS ISLAND GROUP

GARDEN ISLAND FORMATION

BOIS BLANC FORMAT ION

MACKINAC BRECCIA

SYLVANIA SANDSTONE

DET ROIT R IVER GROUP

DUNDEE LIMESTONE

BELL SHALE

TRAVERSE GROUP

ANT RIM SHALE

ELLSWORT H SHALE

BEDFORD SHALE

BEREA SS & BEDFORD SH

SUNBURY SHALE

COLDWAT ER SHALE

MARSHALL FORMATION

MICHIGAN FORMATION

BAYPORT LIMESTONE

SAGINAW FORMATION

GRAND RIVER FORMATION

RED BEDS

BEDROCK GEOLOGY OFWESTERN UPPER PENINSULA

JACOBSVILLE SANDSTONE

FREDA SANDSTONE

NONESUCH FORMAT ION

COPPER HARBOR CONGLOMERAT E

OAK BLUFF FORMATION

PORTAGE LAKE VOLCANICS

SIEMENS CREEK FORMATION

INT RUSIVE

QUINNESEC FORMAT ION

PAINT RIVER GROUP

RIVERT ON IRON FORMATION

BIJ IKI IRON FORMATION

NEGAUNEE IRON FORMATION

IRONWOOD IRON FORMAT ION

DUNN CREEK FORMATION

BADWATER GREENSTONE

MICHIGAMME FORMAT ION

GOODRICH QUARTZ ITE

HEMLOCK FORMATION

MENOMINEE & CHOCOLAY GROUPS

EMPEROR VULCANIC COMPLEX

SIAMO SLATE & AJIBIK QUART ZIT E

PALMS FORMATION

CHOCOLAY GROUP

RANDVILLE DOLOMIT E

ARCHEAN ULT RAMAFIC

ARCHEAN GRANITE & GNEISSIC

ARCHEAN VOL. & SEDIMENTARY

MACKINAC BRECCIA

BEDROCK GEOLOGY OFEASTERN UPPER PENINSULA

MUNISING FORMATION

TREMPEALEAU FORMATION

PRAIRIE DU CHIEN GROUP

BLACK RIVER GROUP

TRENTON GROUP

COLLINGWOOD SHALE MEMBER

UTICA SHALE MEMBER

STONINGT ON FORMATION

BIG HILL DOLOMITE

QUEENSTON SHALE

MANITOULIN DOLOMITE

CABOT HEAD SHALE

BURNT BLUFF GROUP

MANIST IQUE GROUP

ENGADINE GROUP

POINT AUX CHENES SHALE

SAINT IGNACE DOLOMITE

SALINA GROUP

BASS ISLAND GROUP

GARDEN ISLAND FORMATION

BOIS BLANC FORMAT ION

MACKINAC BRECCIA

0 20 40 MilesDate: 11/12/99 N

Michigan MICHIGAN DEPAR TMENT OF NATURAL RESOUR CESLAND AND MINERALS SER VICES D IVISIONRESOUR CE MAPPING AND AERIAL PHOTOGRAPH Y

Mich igan Resource I nfo rmation SystemPart 609, Resource In v entory, of the N atu ra l Resources andEnvironmenta l Protection Act, 1994 PA 451, as amended.

Automated f rom "Bedrock Geology of Michigan ," 1987 , 1 :500,000 sca le ,which was compiled f rom a v a riety of sources by the Michigan Departmentof Environmenta l Quality, Geolog ica l Surv ey D iv ision.

SOURCE

RMAP

1987 BEDROCK GEOLOGY OF MICHIGAN