ICONS atlas: AFR - Taoudeni Basin

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Overview

This page bundles the available data for the Taoudeni Basin in the Africa. 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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Taoudeni Basin location map
Basin name Taoudeni Basin
Region code AFR
Basin ID 7440
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.

Taoudeni Basin cross section
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Dynamic topography evolution for basin centroid
Taoudeni 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
Taoudeni Basin location map
Statistics - Mantle Lid thickness
Median 147.577
Mean 155.331
Scale 13.862
stdev 26.328
Z_min/Location 78.438/22.0°Lat -1.0°Lon
Z_max/Location 226.168/ 25.0°Lat -5.0°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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Depth of 550 deg isotherm
Taoudeni Basin location map
Statistics - Depth of 550 deg isotherm
Median -49.168
Mean -52.033
Scale 2.664
stdev 6.985
Z_min/Location -74.100/22.8°Lat -9.0°Lon
Z_max/Location -37.000/ 22.0°Lat -1.0°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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Mobil isopachs
Taoudeni Basin location map
Statistics - Mobil isopachs
Median 1.217
Mean 1.543
Scale 1.855
stdev 1.827
Z_min/Location -1.958/11.7333°Lat -10.0333°Lon
Z_max/Location 6.475/ 19.5°Lat -11.6°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
Taoudeni Basin location map
Statistics - Plain crustal thickness
Median 37.318
Mean 37.612
Scale 0.506
stdev 0.811
Z_min/Location 35.981/12.0°Lat -10.1°Lon
Z_max/Location 42.831/ 20.5°Lat 1.53333°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
Taoudeni Basin location map
Statistics - Base middle crust
Median -26.547
Mean -26.902
Scale 1.234
stdev 1.375
Z_min/Location -31.697/22.2°Lat -4.13333°Lon
Z_max/Location -24.434/ 11.7333°Lat -10.0333°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
Taoudeni Basin location map
Statistics - Base lower crust
Median -38.835
Mean -39.244
Scale 1.217
stdev 1.302
Z_min/Location -42.753/20.5°Lat 1.53333°Lon
Z_max/Location -35.446/ 11.9°Lat -10.0667°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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Total crustal thickness
Taoudeni Basin location map
Statistics - Total crustal thickness
Median 39.162
Mean 39.556
Scale 1.276
stdev 1.329
Z_min/Location 35.981/11.9°Lat -10.0667°Lon
Z_max/Location 43.212/ 20.5°Lat 1.53333°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
Taoudeni Basin location map
Statistics - Base upper crust
Median -14.162
Mean -14.552
Scale 1.476
stdev 1.614
Z_min/Location -19.697/22.2°Lat -4.13333°Lon
Z_max/Location -11.438/ 11.8667°Lat -9.86667°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
Taoudeni Basin location map
Statistics - Thermal lithospheric thickness
Median 187.016
Mean 194.887
Scale 13.641
stdev 26.686
Z_min/Location 118.000/22.0°Lat -1.0°Lon
Z_max/Location 266.000/ 25.0°Lat -5.0°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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Heatflow
Taoudeni Basin location map
Statistics - Heatflow
Median 47.835
Mean 48.226
Scale 1.691
stdev 2.071
Z_min/Location 44.214/14.4°Lat -12.0°Lon
Z_max/Location 60.133/ 14.5667°Lat 1.53333°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)
Taoudeni Basin location map
Statistics - Topography (ETOPO2)
Median 304.000
Mean 305.928
Scale 48.926
stdev 71.845
Z_min/Location 19.000/14.7333°Lat -12.0667°Lon
Z_max/Location 926.000/ 15.1667°Lat -2.86667°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
Taoudeni Basin location map
Statistics - Base hard sediments
Median -1.169
Mean -1.632
Scale 1.330
stdev 1.515
Z_min/Location -6.697/22.2°Lat -4.13333°Lon
Z_max/Location 0.694/ 22.5667°Lat 3.1°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
Taoudeni Basin location map
Statistics - Temperature at 50km depth
Median 568.541
Mean 560.892
Scale 24.759
stdev 50.021
Z_min/Location 456.000/25.0°Lat -5.0°Lon
Z_max/Location 753.000/ 22.0°Lat -1.0°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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Laske sediment thickness
Taoudeni Basin location map
Statistics - Laske sediment thickness
Median 1.239
Mean 1.915
Scale 1.215
stdev 1.718
Z_min/Location -0.167/15.6667°Lat 0.8°Lon
Z_max/Location 7.709/ 21.6333°Lat -4.7°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
Taoudeni Basin location map
Statistics - Lithospheric temperature gradient
Median 5.337
Mean 5.235
Scale 0.409
stdev 0.575
Z_min/Location 3.987/25.0°Lat -5.0°Lon
Z_max/Location 8.047/ 22.0°Lat -1.0°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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Computations

Isostatic correction
Taoudeni Basin location map
Statistics - Isostatic correction
Median 0.522
Mean 0.763
Scale 0.499
stdev 0.643
Z_min/Location 0.000/21.0°Lat -13.0667°Lon
Z_max/Location 2.730/21.6333°Lat -4.7°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)
Taoudeni Basin location map
Statistics - TTS (sediment)
Median 0.652
Mean 0.869
Scale 0.888
stdev 0.981
Z_min/Location -0.748/22.4333°Lat 2.43333°Lon
Z_max/Location 4.309/22.6°Lat -4.06667°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)
Taoudeni Basin location map
Statistics - Beta (Sediment)
Median 1.091
Mean 1.153
Scale 0.132
stdev 0.206
Z_min/Location 0.913/22.4333°Lat 2.43333°Lon
Z_max/Location 2.228/22.6°Lat -4.06667°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.
Taoudeni Basin location map
Statistics - Crustal vs lithosph. extn.
Median -0.015
Mean -0.001
Scale 0.126
stdev 0.145
Z_min/Location -0.623/22.0°Lat -1.0°Lon
Z_max/Location 0.297/25.0°Lat -5.0°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
Taoudeni Basin location map
Statistics - Anomalous TTS
Median 0.523
Mean 0.786
Scale 0.751
stdev 0.907
Z_min/Location -1.020/11.7333°Lat -10.0333°Lon
Z_max/Location 3.928/22.6667°Lat -4.06667°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
Taoudeni Basin location map
Statistics - Predicted elevation
Median 311.731
Mean 184.602
Scale 289.569
stdev 468.146
Z_min/Location -1143.960/25.0°Lat -6.0°Lon
Z_max/Location 1499.900/22.0°Lat -1.0°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)
Taoudeni Basin location map
Statistics - Beta (Crust)
Median 1.019
Mean 1.011
Scale 0.014
stdev 0.021
Z_min/Location 0.888/20.5°Lat 1.53333°Lon
Z_max/Location 1.057/12.0°Lat -10.1°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)
Taoudeni Basin location map
Statistics - TTS (crust)
Median 0.144
Mean 0.083
Scale 0.104
stdev 0.167
Z_min/Location -0.990/20.5°Lat 1.53333°Lon
Z_max/Location 0.419/12.0°Lat -10.1°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
Taoudeni Basin location map
Statistics - Differential Beta
Median 0.074
Mean 0.142
Scale 0.109
stdev 0.197
Z_min/Location -0.127/11.7667°Lat -10.0333°Lon
Z_max/Location 1.176/22.6°Lat -4.06667°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 02:36:30 CEST | © Christian Heine, School of Geosciences, Sydney University, Australia