Illinois Preliminary Geologic Maps (IPGM)

Mapped areas for the IPGM series

Many Illinois Preliminary Geologic Maps (IPGM) were originally 1:24,000-scale STATEMAP products, but the series also includes maps of other scales and funding sources. In addition to bedrock and surficial geology, this series may include geologic themes such as drift thickness, bedrock topography, and others. Some IPGMs will be upgraded to the Illinois Geologic Quadrangle (IGQ) series. IPGM maps receive a brief internal scientific review and may not conform to ISGS cartographic standards. They are available for sale as paper copies and as free downloadable PDF files through the ISGS Web site. Digital (GIS) data are available for some of these geologic maps. The IPGM series is no longer used for new publications.

Madison County

Quadrangles  
Antioch New Douglas
Ava Oraville
Bethalto Pomona
Chillicothe Prairie du Rocher
Collinsville Prairietown
Fishhook Pulaski
Freeburg Putnam
Grayslake Raddle
Harrisburg Red Bud
Highland Rockwood
Kellerville St. Jacob
Lacon Vergennes
Libertyville Vienna
Maple Park Vincennes
Marine Wauconda
Monks Mound Willisville
Murphysboro Wood River
New Athens West Worden

Other ISGS map Series

Antioch Quadrangle Wauconda Quadrangle Grayslake Quadrangle Libertyville Quadrangle Maple Park Quadrangle Prairietown Quadrangle New Douglas Quadrangle Wood River Quadrangle Marine Quadrangle Monks Mound Quadrangle Collinsville Quadrangle St. Jacob Quadrangle Highland Quadrangle Vincennes Quadrangle Freeburg Quadrangle New Athens West Quadrangle Red Bud Quadrangle Prairie du Rocher Quadrangle Willisville Quadrangle Ava Quadrangle Harrisburg Quadrangle Vergennes Quadrangle Rockwood Quadrangle Raddle Quadrangle Oraville Quadrangle Vienna Quadrangle Pulaski Quadrangle Murphysboro Quadrangle Pomona Quadrangle Fishhook Quadrangle Kellerville Quadrangle Lacon Quadrangle Chillicothe Quadrangle Putnam Quadrangle Bethalto Quadrangle Worden Quadrangle Madison County

Updated 10/5/2009 JKH

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

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