ICONS atlas: NAM - Illinois Basin

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Overview

This page bundles the available data for the Illinois Basin in the North America. The images are hyperlinks and will open up a separate window with a high resolution PDF image of the map.
The basin data is derived from a lower resolution grid which has been upsampled using GMT. This could have introduced an accuracy which is beyond the original data resolution.

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Illinois Basin location map
Basin name Illinois Basin
Region code NAM
Basin ID 1049
Plate location/code intra-cratonic/INC
Basin cross section

The basin cross section is automatically generated using the available crustal structure data sets. Sometimes the data labels are not plotted correctly, depending on the length of the section.

The location of the profile is indicated in all maps as dashed-dotted thin black line. For the endpoints of the profile, the two points of a given polygon located farthest away from each other were computed.

Illinois Basin cross section
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Dynamic topography evolution for basin centroid
Illinois Basin dynamic topography through time

The dynamic topography history for the basin is derived by tracking the basin centroid. The paleo-location for this point is computed using the EarthByte plate kinematic framework rotating the position back in time.

The dynamic topography model is derived from the S20RTS seismic tomography model (Ritsema et al., 99) by converting seismic velocites to density anomalies using an empirical scaling factor of 0.25. The density anomalies are then advected back in time to compute mantle flow with plate motions superimposed (using the EarthByte plate rotation framework) as surface boundary conditions. The dynamic topography is then derived from the computed density distribution using a free upper boundary. For details regarding the methodology see the following papers:

  • B. Steinberger, H. Schmeling, and G. Marquart. Large-scale lithospheric stress field and topography induced by global mantle circulation. Earth Planet. Sci. Lett., 186:75-91, 2001.
    doi: 10.1016/S0012-821X(01)00229-1.
  • B. Steinberger. Effects of latent heat release at phase boundaries on flow in the Earth's mantle, phase boundary topography and dynamic topography at the Earth's surface. Phys. Earth Planet. Int., 164:2-20, 2007.
    doi: 10.1016/j.pepi.2007.04.021.

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Observations

Mantle Lid thickness
Illinois Basin location map
Statistics - Mantle Lid thickness
Median 98.725
Mean 99.001
Scale 2.316
stdev 3.167
Z_min/Location 92.873/36.5°Lat -86.3667°Lon
Z_max/Location 108.082/ 42.1667°Lat -90.5°Lon

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Depth of 550 deg isotherm
Illinois Basin location map
Statistics - Depth of 550 deg isotherm
Median -41.005
Mean -41.226
Scale 0.065
stdev 0.504
Z_min/Location -43.000/42.0°Lat -90.0°Lon
Z_max/Location -40.216/ 36.5°Lat -86.3667°Lon

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Mobil isopachs
Illinois Basin location map
Statistics - Mobil isopachs
Median 1.855
Mean 2.073
Scale 1.069
stdev 1.015
Z_min/Location 0.400/42.3333°Lat -90.1667°Lon
Z_max/Location 4.163/ 37.7667°Lat -88.2667°Lon

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Plain crustal thickness
Illinois Basin location map
Statistics - Plain crustal thickness
Median 39.417
Mean 39.910
Scale 0.835
stdev 1.467
Z_min/Location 38.006/35.9667°Lat -87.9°Lon
Z_max/Location 45.282/ 38.2333°Lat -90.2333°Lon

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Base middle crust
Illinois Basin location map
Statistics - Base middle crust
Median -31.860
Mean -32.112
Scale 0.344
stdev 0.755
Z_min/Location -34.828/38.1667°Lat -90.1667°Lon
Z_max/Location -30.298/ 36.3667°Lat -86.5333°Lon

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Base lower crust
Illinois Basin location map
Statistics - Base lower crust
Median -40.834
Mean -41.341
Scale 0.522
stdev 1.208
Z_min/Location -45.864/38.1667°Lat -90.1667°Lon
Z_max/Location -40.140/ 41.0°Lat -91.0°Lon

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Total crustal thickness
Illinois Basin location map
Statistics - Total crustal thickness
Median 41.000
Mean 41.514
Scale 0.528
stdev 1.214
Z_min/Location 40.352/40.9667°Lat -90.6667°Lon
Z_max/Location 46.090/ 38.1667°Lat -90.1667°Lon

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Base upper crust
Illinois Basin location map
Statistics - Base upper crust
Median -16.857
Mean -16.951
Scale 0.159
stdev 0.290
Z_min/Location -18.167/37.2667°Lat -89.3°Lon
Z_max/Location -15.980/ 36.4°Lat -86.4667°Lon

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Thermal lithospheric thickness
Illinois Basin location map
Statistics - Thermal lithospheric thickness
Median 139.999
Mean 140.515
Scale 1.142
stdev 2.644
Z_min/Location 134.801/36.4°Lat -86.4667°Lon
Z_max/Location 149.465/ 42.3333°Lat -90.3°Lon

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Heatflow
Illinois Basin location map
Statistics - Heatflow
Median 48.383
Mean 48.310
Scale 2.955
stdev 2.160
Z_min/Location 45.041/40.3°Lat -90.0333°Lon
Z_max/Location 52.628/ 37.2667°Lat -89.3°Lon

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Topography (ETOPO2)
Illinois Basin location map
Statistics - Topography (ETOPO2)
Median 180.000
Mean 179.095
Scale 42.995
stdev 38.452
Z_min/Location 95.000/37.3°Lat -88.5333°Lon
Z_max/Location 320.000/ 42.1333°Lat -89.7333°Lon

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Base hard sediments
Illinois Basin location map
Statistics - Base hard sediments
Median -1.615
Mean -1.431
Scale 0.594
stdev 0.557
Z_min/Location -2.807/35.9667°Lat -87.9°Lon
Z_max/Location -0.429/ 38.6333°Lat -90.4333°Lon

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Temperature at 50km depth
Illinois Basin location map
Statistics - Temperature at 50km depth
Median 675.824
Mean 673.960
Scale 3.376
stdev 7.659
Z_min/Location 648.326/42.2667°Lat -90.4°Lon
Z_max/Location 690.696/ 36.4°Lat -86.4667°Lon

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Laske sediment thickness
Illinois Basin location map
Statistics - Laske sediment thickness
Median 1.741
Mean 1.822
Scale 1.091
stdev 0.897
Z_min/Location 0.022/38.1667°Lat -90.1667°Lon
Z_max/Location 3.834/ 38.1°Lat -87.0667°Lon

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Lithospheric temperature gradient
Illinois Basin location map
Statistics - Lithospheric temperature gradient
Median 6.934
Mean 6.920
Scale 0.075
stdev 0.120
Z_min/Location 6.565/42.3333°Lat -90.3°Lon
Z_max/Location 7.218/ 35.9667°Lat -87.9°Lon

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Computations

Isostatic correction
Illinois Basin location map
Statistics - Isostatic correction
Median 0.724
Mean 0.748
Scale 0.437
stdev 0.354
Z_min/Location 0.009/38.1667°Lat -90.1667°Lon
Z_max/Location 1.512/38.1°Lat -87.0667°Lon

Comments

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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TTS (sediment)
Illinois Basin location map
Statistics - TTS (sediment)
Median 0.583
Mean 0.682
Scale 0.300
stdev 0.327
Z_min/Location 0.236/38.9333°Lat -89.9667°Lon
Z_max/Location 2.118/35.9667°Lat -87.9°Lon

Comments

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Beta (Sediment)
Illinois Basin location map
Statistics - Beta (Sediment)
Median 1.081
Mean 1.098
Scale 0.044
stdev 0.053
Z_min/Location 1.031/38.9333°Lat -89.9667°Lon
Z_max/Location 1.371/35.9667°Lat -87.9°Lon

Comments

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Crustal vs lithosph. extn.
Illinois Basin location map
Statistics - Crustal vs lithosph. extn.
Median 0.004
Mean -0.008
Scale 0.023
stdev 0.038
Z_min/Location -0.130/38.2333°Lat -90.2333°Lon
Z_max/Location 0.050/41.5333°Lat -90.8°Lon

Comments

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Anomalous TTS
Illinois Basin location map
Statistics - Anomalous TTS
Median 0.697
Mean 0.778
Scale 0.342
stdev 0.348
Z_min/Location 0.271/38.1°Lat -87.1°Lon
Z_max/Location 1.900/37.3667°Lat -89.4°Lon

Comments

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Predicted elevation
Illinois Basin location map
Statistics - Predicted elevation
Median 1237.100
Mean 1249.970
Scale 68.642
stdev 86.844
Z_min/Location 1069.430/41.5333°Lat -90.8°Lon
Z_max/Location 1477.850/38.1667°Lat -90.1667°Lon

Comments

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Beta (Crust)
Illinois Basin location map
Statistics - Beta (Crust)
Median 1.000
Mean 0.989
Scale 0.021
stdev 0.034
Z_min/Location 0.871/38.2333°Lat -90.2333°Lon
Z_max/Location 1.037/35.9667°Lat -87.9°Lon

Comments

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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TTS (crust)
Illinois Basin location map
Statistics - TTS (crust)
Median 0.003
Mean -0.095
Scale 0.166
stdev 0.291
Z_min/Location -1.161/38.2333°Lat -90.2333°Lon
Z_max/Location 0.282/35.9667°Lat -87.9°Lon

Comments

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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Differential Beta
Illinois Basin location map
Statistics - Differential Beta
Median 0.096
Mean 0.109
Scale 0.049
stdev 0.052
Z_min/Location 0.038/38.1°Lat -87.1°Lon
Z_max/Location 0.334/35.9667°Lat -87.9°Lon

Comments

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a high-res PDF of the map. Units in the statistics table are same as map units. Z_min and Z_max refer to the minima and maxima with their respective geographic locations.

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This basin data is based on interpolated global grids and might contain gridding errors or wrongly interpolated data values.

Page generated 2008-08-03 02:36:48 CEST | © Christian Heine, School of Geosciences, Sydney University, Australia