Recently Added Maps

Recently Added Maps for Download

Basal Sand and Gravel Thickness of the Middle Illinois River Valley
One 41" × 45" map sheet; contains map, legends; descriptive text, 1 table, and 3 figures.
Updated: October 23, 2018
Soil parent materials of the middle Illinois River valley
One 32" × 45" map sheet; contains map, legend; and descriptive text.
Updated: October 23, 2018
Selma Bedrock Map, thumbnail image, sheet 1
33" × 41" single map sheet, contains map, legend, descriptive stratigraphic column, cross section and descriptive text Updated: October 12, 2018
Worden Surficial Map, thumbnail image
33" × 55" double map sheet; sheet 1 contains map and legend; sheet 2 contains descriptive text, inset maps (2), data table, and cross sections (2) Updated: October 12, 2018
Surficial Geology of Tinley Park Quadrangle, map thumbnail, sheet 1
Two 34" x 28" map sheets; sheet 1 contains map and legends; sheet 2 includes 2 cross sections, 3 figures, and descriptive text.Recommended citation: Updated: October 11, 2018
Surficial Geology of Pleasant Mound Quadrangle, map thumbnail, sheet 1
Two 34" x 28" map sheets; sheet 1 contains map and legends; sheet 2 includes 4 cross sections and 4 figures, and descriptive text. A thirteen page report accompanies the map sheets.Recommended citation: Updated: October 11, 2018
Surficial Geology of Monticello Quadrangle, map thumbnail, sheet 1
Two 34" x 28" map sheets; sheet 1 contains map, legends and 2 figures; sheet 2 includes 2 cross sections, 1 figure, and descriptive text.Recommended citation: Updated: October 11, 2018
Bedrock Geology of De Soto Quadrangle, map thumbnail, sheet 1
Two 34" x 28" map sheets; sheet 1 contains map and legends; sheet 2 includes descriptive stratigraphic column, 1 generalized cross section, 1 table, and descriptive text.Recommended citation: Updated: October 11, 2018
Bedrock Geology of Chana Quadrangle, map thumbnail, sheet 1
Two 34" x 28" map sheets; sheet 1 contains map and legends; sheet 2 includes descriptive stratigraphic column, 2 cross sections, 2 figures, and descriptive text.Recommended citation: Updated: October 11, 2018
Bedrock Geology of Baldwin Quadrangle, map thumbnail, sheet 1
Two 34" x 28" map sheets; sheet 1 contains map, legends, and 1 figures; sheet 2 includes descriptive stratigraphic column, 1 cross section, 2 images, and descriptive text.Recommended citation: Updated: October 11, 2018