STRATIGRAPHIC DOMINANT LITHOLOGY

ERA PERIOD EPOCHNORTHSTAGES AMERICANBasin Margin Basin Center MEMBER FORMATIONGROUP SUCCESSION IN LOWER Quaternary Pleistocene Glacial Drift PENINSULA Cenozoic Pleistocene OF MICHIGAN Mesozoic Jurassic ?Kimmeridgian? Ionia Sandstone Late Michigan Dept. of Environmental Quality Conemaugh Grand River Formation Geological Survey Division Late Harold Fitch, State Geologist Pennsylvanian and Saginaw Formation ?Pottsville? Michigan Basin Geological Society Early GEOL IN OG S IC A A B L

N Parma Sandstone S A O

G C

I

I

H

E

C T

I

Y Bayport Limestone M

Meramecian Grand Rapids Group 1936 Late Michigan Formation Stratigraphic Nomenclature Project Committee: Mississippian Dr. Paul A. Catacosinos, Co-chairman Mark S. Wollensak, Co-chairman Osagian Marshall Sandstone Principal Authors: Dr. Paul A. Catacosinos Early Kinderhookian Coldwater Shale Dr. William Harrison III Robert Reynolds Sunbury Shale Dr. Dave B.Westjohn Mark S. Wollensak Berea Sandstone Chautauquan Bedford Shale 2000 Late Antrim Shale Senecan Traverse Formation

Traverse Limestone Traverse Group Erian Devonian Bell Shale Dundee Limestone Middle Lucas Formation Detroit River Group Amherstburg Form. Ulsterian Sylvania Sandstone Bois Blanc Formation

Garden Island Formation Early

Bass Islands Dolomite Sand Salina G Unit Paleozoic Glacial Clay or Silt Late Cayugan Salina F Unit Till/Gravel Salina E Unit Salina D Unit Limestone Salina C Shale Salina Group Salina B Unit Sandy Limestone Salina A-2 Carbonate Silurian Salina A-2 Evaporite Shaley Limestone Ruff Formation (Salina A-1 Carbonate) Limestone Bedded Guelph Dolomite (Salina A-1 Evaporite) Niagaran (Brown Niagaran/ Dolomite Cain Formation

Middle Salina A-0 Carbonate) (Gray Niagaran) Lockport Sandy Dolomite (White Niagaran) Dolomite Niagara Shaley Dolomite Manistique Limestone Group Burnt Bluff Formation Sandstone-Coarse Cabot Head Shale Alexandrian Cataract Group Sandstone-Fine

Early Manitoulin Dolomite Sandstone-Cross Bedded

Queenston Shale Sandstone-Bedded Richmond Group Cincinnatian Calcareous Sandstone Late Utica Shale Shaley Sandstone Collingwood Shale Shale Ordovician Trenton Formation Mohawkian Arenaceous Shale Middle Black River Formation Calcareous Shale Chazyan Glenwood Formation Dolomitic Shale Bruggers Sandstone/St. Peter Sandstone Foster Formation Prairie du Chien Anhydrite Early Group Canadian Gypsum

Trempealeaun Trempealeau Formation Basement Rocks

Franconian Franconia Formation Coal Bed Galesville Sandstone Munising Group Breccia Cambrian Late Eau Claire Formation Dresbachian Chert Mt. Simon Sandstone Glauconite G G

Bentonite x x x x Pre-Mt. Simon Clastics Middle Proterozoic Eon Fossils f f f f Precambrian Crystalline Basement Unconformity