Digital (GIS) Data
GIS Data is Available for the Following Maps
Many of the published ISGS geologic maps are available in digital (GIS) data format. A zip file linked to each of the following maps contains GIS files, metadata, supporting documentation, and graphic files for viewing. See the contents description below.
BG = Bedrock Geology
G = Geology
ST = Surface Topography
SG = Surficial Geology
Map
Alton
Ames
Antioch
Arlington Heights
Ava
Bandana
Berwyn
Bethalto
Bloomfield
Blue Island
Brownfield
Cairo
Calumet City
Carbondale
Carrier Mills
Cave In Rock
Chicago Loop
Chillicothe
Cobden
Collinsville
Columbia
Crab Orchard
Crab Orchard Lake
Creal Springs
Crystal Lake
Cypress
Dekoven
Dongola
Dunlap
Dyer
Eddyville
Elburn
Elgin
Elmhurst
Elsah
Englewood
Equality
Evanston
Fishhook
Frankfort
Freeburg
French Village
Geneva
Glendale
Goreville
Grafton
Grand Detour
Grantfork
Grayslake
Hampshire
Harrisburg
Harvey
Henry County
Herod
Herrin
Highland
Highland Park
Hinsdale
Jackson Park
Johnston City
Jonesboro and Ware
Joppa
Karbers Ridge
Karnak
Kellerville
Lacon
Lake County
Lake Calumet
Theme
SG
SG
SG
SG
BG
G
SG
BG, SG
G
SG
BG
G
SG
BG, DT, SG
BG
SG
SG
SG
G
SG
SG
BG, SG
BG, SG
G
SG
G
SG
G
SG
SG
G
SG
SG
SG
BG
SG
G
SG
BG
SG
BG
SG
SG
G
G
SG
BG
SG
SG
SG
BG
SG
SG, ST
SG
BG, SG
SG
SG
SG
SG
BG, SG
G
G
BG
G
BG
SG
ST
SG
Map
Libertyville
Lick Creek
Maple Park
Madison County
Makanda
Manhattan
Marine
Marion
Mascoutah
McClure
Mermet
Metropolis
Middle Illinois River Valley
Mill Creek
Mokena
Monks Mound
Mt. Pleasant
Murphysboro
New Athens East
New Athens West
New Douglas
Oak Hill
Olmsted
Oraville
Paderborn
Paducah NE
Palos Park
Park Ridge
Pingree Grove
Pittsburg
Pomona
Prairie du Rocher
Prairietown
Pulaski
Putnam
Raddle
Red Bud
Reevesville
Repton
River Forest
Rockwood
Rome
Rosiclare
Rudement
Sag Bridge
Saline Mines
Shawneetown
Shetlerville
Spring Bay
St. Clair County
St. Jacob
Steger
Stonefort
Tinley Park
Valmeyer
Vergennes
Vienna
Waltersburg
Ware
Wauconda
Welge
Wheeling
Willisville
Wolf Lake
Wood River
Worden
Theme
SG
G
SG
SG
G
SG
SG
BG, SG
SG
G
G
SG
SG
G
SG
SG
BG
BG
SG
G
SG
SG
G
BG
SG
BG
SG
SG
SG
BG, SG
BG
BG
BG, SG
G
SG
BG
G, SG
G
SG
SG
BG
SG
SG
G
SG
BG, SG
G
SG
SG
SG
SG
SG
G
SG
BG
BG
BG
G
G
SG
BG, SG
SG
BG
G
SG
SG
List of Distribution File Contents
The downloadable distribution file (zip) may contain any of the following:
README.htm … description of contents
Data Files
[filename].mdb … ArcGIS geodatabase in MS Access format
[filename].pmf … ArcReader map document
Isgs_Gmdm_[ver].style … ArcGIS map symbol definition
[filename].pdf … Full-scale rendition of published hardcopy map
[filename]_report.pdf … Report that accompanied published hardcopy
map
metadata.htm … Description of the data in FGDC metadata form
Data Dictionary Files
Isgs_Gmdm_Catalog_Tree_[ver].pdf … ArcCatalog view of geodatabase
contents
Isgs_Gmdm_Map_Feature_Examples_[ver].pdf … Examples of map features
by feature class
Isgs_Gmdm_Data_Object_List_[ver].pdf … Short list of geodatabase
contents
Isgs_Gmdm_Data_Object_Desc_[ver].pdf … Detailed list of geodatabase
contents
Isgs_Gmdm_Field_Defs_Short_[ver].pdf … Short list of field
definitions
Isgs_Gmdm_Field_Defs_[ver].pdf … Detailed list of field
definitions
Isgs_Gmdm_Domain_Defs_[ver].pdf … Domain definitions
Note: [ver] = version number of the ISGS geologic map data model (GMDM) that was current when the files were created.
Technical Requirements
The data are intended for use with GIS software. The ISGS uses ESRI
ArcGIS software, however, ESRI formats can be imported into many
different GIS software packages. It is expected that customers who
obtain these data have the technical expertise to use GIS software. Th
ISGS does not provide software support of any kind.
The ArcReader file (*.pmf) provides an interactive map that can be used to browse the data. It requires ArcReader 9.3, which can be downloaded free of charge from www.esri.com.
Updated 06/19/2012 SLD