Online Links:
Online Links:
Value | Definition |
---|---|
1200 | T = Tertiary |
1360 | K = Cretaceous |
1550 | PAma = Mattoon Formation |
1880 | PAb = Bond Formation |
2120 | PAm = Modesto Formation |
2480 | PAc = Carbondale Formation |
3030 | PAs = Spoon Formation |
3540 | PAa = Abbott Formation |
3820 | PAcv = Caseyville Formation |
4025 | Mcu = Upper Chesterian (Grove Church - Tar Springs) |
4265 | Mcl = Lower Chesterian (Glen Dean - Renault) |
5005 | Mvu = Upper Valmeyeran (Aux Vases, Ste. Genevieve, St. Louis) |
5175 | Mvm = Middle Valmeyeran (Salem, Warsaw, Borden, Springville; includes thin Mvl and Mk in south and east) |
5255 | Mvl = Lower Valmeyeran (Keokuk-Sedalia) |
5420 | Mk = Kinderhookian |
5810 | Du = Upper Devonian |
5880 | Dm = Middle Devonian |
6170 | Dl = Lower Devonian |
6700 | S = Silurian |
7390 | Om = Maquoketa |
7550 | Og = Galena-Platteville |
8160 | Oa = Ancell |
8420 | Op = Prairie du Chien |
8550 | CA = Cambrian |
water | water |
Value | Definition |
---|---|
T;0 | T = Tertiary |
K;0 | K = Cretaceous |
PAma;0 | PAma = Mattoon Formation |
PAb;0 | PAb = Bond Formation |
PAm;0 | PAm = Modesto Formation |
PAc;0 | PAc = Carbondale Formation |
PAs;0 | PAs = Spoon Formation |
PAa;0 | PAa = Abbott Formation |
PAcv;0 | PAcv = Caseyville Formation |
Mcu;0 | Mcu = Upper Chesterian (Grove Church - Tar Springs) |
Mcl;0 | Mcl = Lower Chesterian (Glen Dean - Renault) |
Mvu;0 | Mvu = Upper Valmeyeran (Aux Vases, Ste. Genevieve, St. Louis) |
Mvm;0 | Mvm = Middle Valmeyeran (Salem, Warsaw, Borden, Springville; includes thin Mvl and Mk in south and east) |
Mvl;0 | Mvl = Lower Valmeyeran (Keokuk-Sedalia) |
Mk;0 | Mk = Kinderhookian |
Du;0 | Du = Upper Devonian |
Dm;0 | Dm = Middle Devonian |
Dl;0 | Dl = Lower Devonian |
S;0 | S = Silurian |
Om;0 | Om = Maquoketa |
Og;0 | Og = Galena-Platteville |
Oa;0 | Oa = Ancell |
Op;0 | Op = Prairie du Chien |
CA;0 | CA = Cambrian |
water;0 | water |
Value | Definition |
---|---|
ILT;0 | T = Tertiary |
ILK;0 | K = Cretaceous |
ILPAma;0 | PAma = Mattoon Formation |
ILPAb;0 | PAb = Bond Formation |
ILPAm;0 | PAm = Modesto Formation |
ILPAc;0 | PAc = Carbondale Formation |
ILPAs;0 | PAs = Spoon Formation |
ILPAa;0 | PAa = Abbott Formation |
ILPAcv;0 | PAcv = Caseyville Formation |
ILMcu;0 | Mcu = Upper Chesterian (Grove Church - Tar Springs) |
ILMcl;0 | Mcl = Lower Chesterian (Glen Dean - Renault) |
ILMvu;0 | Mvu = Upper Valmeyeran (Aux Vases, Ste. Genevieve, St. Louis) |
ILMvm;0 | Mvm = Middle Valmeyeran (Salem, Warsaw, Borden, Springville; includes thin Mvl and Mk in south and east) |
ILMvl;0 | Mvl = Lower Valmeyeran (Keokuk-Sedalia) |
ILMk;0 | Mk = Kinderhookian |
ILDu;0 | Du = Upper Devonian |
ILDm;0 | Dm = Middle Devonian |
ILDl;0 | Dl = Lower Devonian |
ILS;0 | S = Silurian |
ILOm;0 | Om = Maquoketa |
ILOg;0 | Og = Galena-Platteville |
ILOa;0 | Oa = Ancell |
ILOp;0 | Op = Prairie du Chien |
ILCA;0 | CA = Cambrian |
ILwater;0 | water |
Value | Definition |
---|---|
IL001 | Willman, H.B., and others, (compilers), 1967, Geologic Map of Illinois: Illinois State Geological Survey, scale= 1:500,000, paper. |
Value | Definition |
---|---|
Cambrian | |
Cretaceous | |
Devonian | |
Mississippian | |
Ordovician | |
Pennsylvanian | |
Silurian | |
Tertiary |
Value | Definition |
---|---|
black shale | |
dolostone (dolomite) | |
limestone | |
sand | |
sandstone | |
shale | |
water |
Value | Definition |
---|---|
chert | |
clay or mud | |
dolostone (dolomite) | |
limestone | |
sandstone | |
shale | |
siltstone |
Value | Definition |
---|---|
1 | contact, location certain |
7 | shoreline or riverbank |
30 | fault, sense of displacement unknown or undefined, location certain |
124 | state boundary |
Value | Definition |
---|---|
0 | no additional information |
Value | Definition |
---|---|
0 | no additional information |
Value | Definition |
---|---|
IL001 | Willman, H.B., and others, (compilers), 1967, Geologic Map of Illinois: Illinois State Geological Survey, scale= 1:500,000, paper. |
US001 | Johnson, Bruce R. and Leveritch, Beth, 1998, 1:100,000 Scale State Boundaries of the Conterminous United States: U.S. Geological Survey, unpublished (see metadata file: st100kmeta.txt, CONUSdocumentationMW.pdf) |
State Geologic Map Compilation (SGMC) activity of the National Surveys and Analysis projects of the US Geological Survey Mineral Resources Program.
A primary goal of this work is to develop geologic map datasets with standardized structure and attribution. The database design and standards are documented in CONUSdocumentationMW.pdf of this series. The intent is that contiguous databases can be merged seamlessly and without any additional effort. In addition to a common database structure, the conterminous U.S. state databases (the contiguous 48 states) have been fitted to a set of standard state boundaries so that, when states are merged, they match without slivers or overlap. No attempt has been made to reconcile differences in mapping across state boundaries.
Are there legal restrictions on access or use of the data?Access_Constraints: none
Use_Constraints:This database is not meant to be used or displayed at any scale other than 1:500,000. Any hardcopies utilizing these data sets shall clearly indicate their source. If the licensee has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map. Licensee specifically agrees not to misrepresent these data sets, nor to imply that changes they made were approved by the U.S. Geological Survey.
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the USGS. Although these data have been used by the USGS and have been successfully imported into data base programs, no warranty, expressed or implied, is made by the USGS as to how successfully or accurately the data can be imported into any specific application software running on any specific hardware platform. The fact of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith. This data base GIS is not meant to be used or displayed at any scale other than 1:500,000.
Data format: | Geologic units and structural features in format ARC/INFO export (version 8.3) |
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Network links: |
http://pubs.usgs.gov/of/2004/1355/ |