ICONS atlas: AFR - Timimoun Basin

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Overview

This page bundles the available data for the Timimoun 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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Timimoun Basin location map
Basin name Timimoun Basin
Region code AFR
Basin ID 7200
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.

Timimoun Basin cross section
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Dynamic topography evolution for basin centroid
Timimoun 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
Timimoun Basin location map
Statistics - Mantle Lid thickness
Median 81.146
Mean 84.082
Scale 13.703
stdev 15.024
Z_min/Location 62.096/30.4667°Lat -2.5°Lon
Z_max/Location 131.091/ 26.6°Lat 3.23333°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
Timimoun Basin location map
Statistics - Depth of 550 deg isotherm
Median -37.344
Mean -37.693
Scale 2.587
stdev 2.572
Z_min/Location -45.823/26.6°Lat 3.23333°Lon
Z_max/Location -34.000/ 30.0°Lat -2.0°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
Timimoun Basin location map
Statistics - Mobil isopachs
Median 3.955
Mean 3.835
Scale 0.992
stdev 1.161
Z_min/Location 0.986/26.9333°Lat 0.733333°Lon
Z_max/Location 6.664/ 29.0667°Lat 0.8°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
Timimoun Basin location map
Statistics - Plain crustal thickness
Median 34.707
Mean 34.867
Scale 3.392
stdev 2.541
Z_min/Location 30.711/29.7333°Lat 2.46667°Lon
Z_max/Location 39.223/ 29.7°Lat -1.76667°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
Timimoun Basin location map
Statistics - Base middle crust
Median -25.971
Mean -25.963
Scale 1.658
stdev 1.205
Z_min/Location -28.037/29.0333°Lat 0.0°Lon
Z_max/Location -23.571/ 28.3°Lat 2.9°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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Base lower crust
Timimoun Basin location map
Statistics - Base lower crust
Median -37.590
Mean -37.800
Scale 2.652
stdev 1.956
Z_min/Location -41.195/29.0333°Lat 0.0°Lon
Z_max/Location -34.431/ 28.6°Lat 2.9°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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Total crustal thickness
Timimoun Basin location map
Statistics - Total crustal thickness
Median 37.955
Mean 38.189
Scale 2.636
stdev 1.964
Z_min/Location 34.790/28.5333°Lat 2.9°Lon
Z_max/Location 41.508/ 29.1333°Lat 0.0°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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Base upper crust
Timimoun Basin location map
Statistics - Base upper crust
Median -14.769
Mean -14.680
Scale 0.440
stdev 0.531
Z_min/Location -15.581/29.9333°Lat 1.76667°Lon
Z_max/Location -13.049/ 27.1333°Lat 3.36667°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
Timimoun Basin location map
Statistics - Thermal lithospheric thickness
Median 119.540
Mean 122.272
Scale 12.706
stdev 14.062
Z_min/Location 101.542/30.8667°Lat -2.03333°Lon
Z_max/Location 169.154/ 26.6°Lat 3.23333°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
Timimoun Basin location map
Statistics - Heatflow
Median 59.096
Mean 59.634
Scale 2.196
stdev 2.890
Z_min/Location 54.273/26.8333°Lat 0.8°Lon
Z_max/Location 69.812/ 31.7667°Lat 1.73333°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)
Timimoun Basin location map
Statistics - Topography (ETOPO2)
Median 449.000
Mean 449.764
Scale 130.469
stdev 112.932
Z_min/Location 169.000/28.9333°Lat 0.0°Lon
Z_max/Location 868.000/ 30.6°Lat -0.933333°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
Timimoun Basin location map
Statistics - Base hard sediments
Median -2.936
Mean -2.933
Scale 0.988
stdev 0.855
Z_min/Location -4.549/29.9333°Lat 1.96667°Lon
Z_max/Location -0.468/ 26.7°Lat 3.3°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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Temperature at 50km depth
Timimoun Basin location map
Statistics - Temperature at 50km depth
Median 747.072
Mean 743.086
Scale 49.179
stdev 48.105
Z_min/Location 606.640/26.6°Lat 3.23333°Lon
Z_max/Location 827.177/ 30.8667°Lat -2.03333°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
Timimoun Basin location map
Statistics - Laske sediment thickness
Median 3.507
Mean 3.514
Scale 1.345
stdev 1.184
Z_min/Location 0.860/26.6°Lat 3.23333°Lon
Z_max/Location 6.006/ 29.9667°Lat 0.966667°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
Timimoun Basin location map
Statistics - Lithospheric temperature gradient
Median 7.985
Mean 7.870
Scale 0.827
stdev 0.740
Z_min/Location 5.957/26.6°Lat 3.23333°Lon
Z_max/Location 9.101/ 30.8667°Lat -2.03333°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
Timimoun Basin location map
Statistics - Isostatic correction
Median 1.395
Mean 1.383
Scale 0.488
stdev 0.428
Z_min/Location 0.366/26.6°Lat 3.23333°Lon
Z_max/Location 2.233/29.9667°Lat 0.966667°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)
Timimoun Basin location map
Statistics - TTS (sediment)
Median 1.445
Mean 1.551
Scale 0.445
stdev 0.574
Z_min/Location 0.079/26.9333°Lat 3.4°Lon
Z_max/Location 3.205/30.3°Lat 2.06667°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)
Timimoun Basin location map
Statistics - Beta (Sediment)
Median 1.227
Mean 1.259
Scale 0.085
stdev 0.127
Z_min/Location 1.010/26.9333°Lat 3.4°Lon
Z_max/Location 1.694/30.3°Lat 2.06667°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.
Timimoun Basin location map
Statistics - Crustal vs lithosph. extn.
Median 0.015
Mean 0.013
Scale 0.181
stdev 0.143
Z_min/Location -0.263/30.2333°Lat -2.56667°Lon
Z_max/Location 0.257/26.9667°Lat 2.03333°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
Timimoun Basin location map
Statistics - Anomalous TTS
Median 1.508
Mean 1.517
Scale 0.368
stdev 0.368
Z_min/Location 0.340/27.1333°Lat 3.36667°Lon
Z_max/Location 2.310/30.3°Lat 2.03333°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
Timimoun Basin location map
Statistics - Predicted elevation
Median 1373.880
Mean 1327.570
Scale 358.706
stdev 311.085
Z_min/Location 543.810/26.6°Lat 3.23333°Lon
Z_max/Location 1801.260/30.0°Lat -2.0°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)
Timimoun Basin location map
Statistics - Beta (Crust)
Median 1.009
Mean 1.010
Scale 0.100
stdev 0.074
Z_min/Location 0.893/29.7°Lat -1.76667°Lon
Z_max/Location 1.140/29.7333°Lat 2.46667°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)
Timimoun Basin location map
Statistics - TTS (crust)
Median 0.069
Mean 0.033
Scale 0.757
stdev 0.567
Z_min/Location -0.940/29.7°Lat -1.76667°Lon
Z_max/Location 0.962/29.7333°Lat 2.46667°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
Timimoun Basin location map
Statistics - Differential Beta
Median 0.239
Mean 0.249
Scale 0.054
stdev 0.082
Z_min/Location 0.044/27.0333°Lat 3.4°Lon
Z_max/Location 0.565/30.3°Lat 2.06667°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