Geologic Quadrangle Maps
Most links below are PDF files and can be either downloaded to your computer by right clicking on each link, saving to your computer, and then opening the file in Adobe_Acrobat, or files can be viewed directly in your Web browser. Some PDF files can exceed 25 MB in size (mostly maps and plates); we therefore recommend downloading each file to your computer first. Some publications contain separate plates that need to be downloaded individually.
Publications by ISGS Type
IGQ-1 Geologic Map of the Shawneetown Quadrangle, Gallatin County, Illinois. 1986.
IGQ-2 Geologic Map of the Equality Quadrangle, Gallatin and Saline Counties, Illinois. 1986.
IGQ-3 Geologic Map of the Rudement Quadrangle, Saline County, Illinois. 1986.
IGQ-4 Geologic Map of the Creal Springs Quadrangle, Williamson and Johnson Counties, Illinois. 1986.
IGQ-5 Geologic Map of the Eddyville Quadrangle, Saline and Pope Counties, Illinois. 1990.
IGQ-6 Geologic Map of the Stonefort Quadrangle, Williamson, Saline, Johnson, and Pope Counties, Illinois. 1990
IGQ-7 Geologic Map of the Goreville Quadrangle, Johnson and Williamson Counties, Illinois. 1991
IGQ-8 Geologic Map of the Waltersburg Quadrangle, Pope County, Illinois. 1991.
IGQ-9 Geologic Map of the Glendale Quadrangle, Johnson and Pope Counties, Illinois. 1991
IGQ-10 Geologic Map of the Bloomfield Quadrangle, Johnson County, Illinois. 1995.
IGQ-11 Geologic Map of the Makanda Quadrangle, Jackson, Union and Williamson Counties, Illinois. 1993.
IGQ-12 Geologic Map of the Lick Creek Quadrangle, Johnson, Union and Williamson Counties, Illinois. 1993.
IGQ-13 Geologic Map of the Wolf Lake Quadrangle, Jackson and Union Counties, Illinois. 1993
IGQ-16 Geologic Map of the Cobden Quadrangle, Jackson and Union Counties, Illinois. 1995.