Illinois Geologic Quadrangle (IGQ) Maps

Mapped areas for the IGQ series Crystal Lake Quadrangle Pingree Grove Quadrangle Elburn Quadrangle Geneva Quadrangle Sugar Grove Quadrangle Aurora North Quadrangle Beecher West Quadrangle Spring Bay Quadrangle Villa Grove Quadrangle Vincennes Quadrangle Grantfork Quadrangle Alton Quadrangle Bethalto Quadrangle French Village Quadrangle Rudement Quadrangle Equality Quadrangle Shawneetown Quadrangle Wolf Lake Quadrangle Cobden Quadrangle Makanda Quadrangle Lick Creek Quadrangle Goreville Quadrangle Creal Springs Quadrangle Stonefort Quadrangle Eddyville Quadrangle Ware Quadrangle Jonesboro Quadrangle Dongola Quadrangle Bloomfield Quadrangle Glendale Quadrangle Waltersburg Quadrangle Mermet Quadrangle Reevesville Quadrangle Paducah Northeast Quadrangle Elgin Quadrangle Oak Hill Quadrangle Grafton Quadrangle Elsah Quadrangle Hampshire Quadrangle Mascoutah Quadrangle Columbia Quadrangle Waterloo Quadrangle Renault Quadrangle Ames Quadrangle Welge Quadrangle Brownfield Quadrangle Metropolis Quadrangle Joppa Quadrangle Bandana Quadrangle Karnak Quadrangle Cairo Quadrangle Mill Creek Quadrangle McClure Quadrangle Mt. Pleasant Quadrangle Carrier Mills Quadrangle Crab Orchard Quadrangle Marion Quadrangle Crab Orchard Lake Quadrangle Herrin Quadrangle Johnston City Quadrangle Pittsburg Quadrangle Steger Quadrangle Cypress Quadrangle Cahokia Quadrangle Valmeyer Quadrangle

Most Illinois Geologic Quadrangle (IGQ) maps originally were produced as STATEMAP or Illinois Preliminary Geologic Map products; some were derived from other mapping activity. In addition to bedrock and surficial geology, this series may include a variety of geologic themes such as bedrock topography, drift thickness, and others. IGQ maps are available for sale as hard copy and as free downloadable graphics through this website. Digital (GIS) data are available for some of these geologic maps. They are extensively reviewed, internally and externally, and comply with ISGS cartographic standards at the time of public release.

Quadrangles  
Alton Jonesboro
Ames Joppa
Aurora North Karnak
Bandana Lick Creek
Beecher West Makanda
Bethalto Marion
Bloomfield Mascoutah
Brownfield McClure
Cahokia Mermet
Cairo Metropolis
Carrier Mills Mill Creek
Cobden Mt. Pleasant
Columbia New Athens East
Crab Orchard Oak Hill
Crab Orchard Lake Paducah NE
Creal Springs Pingree Grove
Crystal Lake Pittsburg
Cypress Reevesville
Dongola Renault
Eddyville Rudement
Elburn Shawneetown
Elgin Spring Bay
Elsah Steger
Equality Stonefort
French Village Sugar Grove
Geneva Valmeyer
Glendale Villa Grove
Goreville Vincennes
Grafton Waltersburg
Grantfork Ware
Hampshire Waterloo
Herrin Welge
Johnston City Wolf Lake


Other ISGS map Series


Updated 10/5/2009 JKH

ILLINOIS STATE GEOLOGICAL SURVEY
E. Donald McKay, III, Interim Director

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