County mapping is carried out at the ISGS under a variety of programs. The programs exist for different purposes and require different levels of scientific review. Maps are published in specific Series based on the program under which they were created and the corresponding level of review.
Search for keywords in titles, authors, descriptions, and publication year below. For more detailed searches on themes, quads, series, programs, counties, and states, click the "Advanced Search" option.
Displaying 11 - 20 of 86| Map Images | Title | Description | Theme | Series | County | Publication Date | Authors |
|---|---|---|---|---|---|---|---|
|
Bedrock Geology of Pope County, Illinois | Two 35" x 52 " map sheets; sheet 1 contains map, legends, and 2 figures; sheet 2 includes descriptive stratigraphic column and cross section; report contains descriptive text and 15 figures. |
Bedrock Geology | Pope | 2016 | Joseph A. Devera, W. John Nelson, F. Brett Denny, Jeremy R. Breeden | |
|
Bedrock Geology of Union County, Illinois | Two 50" x 39" map sheets; sheet 1 contains map, legends, 2 inset maps, and 2 figures; sheet 2 contains 3 cross sections, 1 geologic column, and legends. Accompanying 40-page report includes discussions, references, 18 figures, 12 photos, and 2 plates. |
Bedrock Geology | Union | 2021 | Joseph A. Devera, W. John Nelson, Charles F. Hoffman, Jeremy R. Breeden | |
|
Bedrock Geology of Williamson County, Illinois | One 36" x 30" map sheet which contains map and legends. A 63 page report includes sections on stratigraphy, structural geology, economic geology, references, appendix, 23 figures, 4 tables, and 1 plate. |
Bedrock Geology | Williamson | 2020 | W. John Nelson | |
|
Bedrock Geology, Hardin County | Two 42" x 35 " map sheets and one 20-page report; sheet 1 contains map, legends, and cross section; sheet 2 includes descriptive column and 8 maps; report contains descriptive text and 7 figures and 1 table. |
Bedrock Geology | Hardin | 2014 | F. Brett Denny, Mary J. Seid | |
|
Bedrock Geology, Kane County, Illinois | One 27" x 33" map sheet; includes map, legends and descriptive text |
Bedrock Geology | Illinois County Geologic Map Series (ICGM) | Kane | 2007 | William S. Dey, Alec M. Davis, B. Brandon Curry |
|
Bedrock Surface Topography Map, Jo Daviess County, Illinois | 1:62,500 Jo Daviess County map; 42" x 29" single map sheet; includes map, legend and descriptive text |
Bedrock Topography | Open File Series (OFS) | Jo Daviess | 2000 | Christopher S. McGarry, Matthew H. Riggs |
|
Bedrock Topography of Boone and Winnebago Counties, Illinois | 1:100,000 Boone and Winnebago Counties area map; 33" x 26" single map sheet; includes map, legend and inset map |
Bedrock Topography | Boone | 2000 | Christopher S. McGarry | |
|
Bedrock Topography of Carroll County, Illinois | 1:62,500 Carroll County map; 37" x 27" single map sheet; includes map, legend, and 3 inset maps |
Bedrock Topography | Open File Series (OFS) | Carroll | 1997 | Christopher S. McGarry |
|
Bedrock Topography of Lee County, Illinois | 1:62,500 Lee County area map; 47" x 30" single map sheet; includes map, legend, descriptive text, and inset map |
Bedrock Topography | Open File Series (OFS) | Lee | 1999 | Christopher S. McGarry |
|
Bedrock Topography of Madison County, Illinois | One 48" x 35.5" map sheet contains map, legends, report, and 2 map figures. |
Bedrock Topography | Madison | 2022 | David A. Grimley, Andrew C. Phillips |