ICONS atlas: AFR - Salamat Basin

Regional basin list

To view the data for individual basins, select a basin from the dropdown menu below or click the basin name in the overview table. This will open a separate page with detailed maps.

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Overview

This page bundles the available data for the Salamat 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.

Select data to display:

Salamat Basin location map
Basin name Salamat Basin
Region code AFR
Basin ID 7730
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.

Salamat Basin cross section
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Dynamic topography evolution for basin centroid
Salamat 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
Salamat Basin location map
Statistics - Mantle Lid thickness
Median 79.220
Mean 78.852
Scale 1.112
stdev 1.129
Z_min/Location 76.011/9.8°Lat 19.9°Lon
Z_max/Location 80.448/ 9.86667°Lat 22.4667°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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Depth of 550 deg isotherm
Salamat Basin location map
Statistics - Depth of 550 deg isotherm
Median -37.109
Mean -37.130
Scale 0.073
stdev 0.075
Z_min/Location -37.343/9.7°Lat 21.4667°Lon
Z_max/Location -37.000/ 10.0°Lat 21.0°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
Salamat Basin location map
Statistics - Mobil isopachs
Median 2.513
Mean 2.473
Scale 0.253
stdev 0.224
Z_min/Location 1.951/10.4°Lat 22.3°Lon
Z_max/Location 2.806/ 9.83333°Lat 20.2333°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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Plain crustal thickness
Salamat Basin location map
Statistics - Plain crustal thickness
Median 38.987
Mean 39.253
Scale 0.803
stdev 0.843
Z_min/Location 38.359/9.86667°Lat 22.4333°Lon
Z_max/Location 41.419/ 9.7°Lat 19.9333°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
Salamat Basin location map
Statistics - Base middle crust
Median -25.914
Mean -26.115
Scale 0.733
stdev 0.732
Z_min/Location -27.960/9.7°Lat 19.9333°Lon
Z_max/Location -25.261/ 9.9°Lat 22.5667°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
Salamat Basin location map
Statistics - Base lower crust
Median -39.128
Mean -39.405
Scale 1.072
stdev 1.033
Z_min/Location -41.925/9.7°Lat 19.9333°Lon
Z_max/Location -38.242/ 9.86667°Lat 22.5°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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Total crustal thickness
Salamat Basin location map
Statistics - Total crustal thickness
Median 39.602
Mean 39.892
Scale 0.984
stdev 0.982
Z_min/Location 38.839/9.86667°Lat 22.4333°Lon
Z_max/Location 42.320/ 9.7°Lat 19.9333°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
Salamat Basin location map
Statistics - Base upper crust
Median -12.735
Mean -12.815
Scale 0.416
stdev 0.381
Z_min/Location -13.728/9.7°Lat 19.9333°Lon
Z_max/Location -12.322/ 10.0667°Lat 23.0°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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Thermal lithospheric thickness
Salamat Basin location map
Statistics - Thermal lithospheric thickness
Median 118.724
Mean 118.743
Scale 0.352
stdev 0.314
Z_min/Location 118.000/10.0°Lat 22.0°Lon
Z_max/Location 119.624/ 9.7°Lat 21.4667°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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Heatflow
Salamat Basin location map
Statistics - Heatflow
Median 57.044
Mean 57.031
Scale 0.668
stdev 0.584
Z_min/Location 55.841/9.8°Lat 21.8333°Lon
Z_max/Location 58.265/ 9.86667°Lat 19.9333°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)
Salamat Basin location map
Statistics - Topography (ETOPO2)
Median 414.000
Mean 424.253
Scale 34.100
stdev 47.436
Z_min/Location 357.000/9.86667°Lat 19.9667°Lon
Z_max/Location 613.000/ 10.0°Lat 22.4°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
Salamat Basin location map
Statistics - Base hard sediments
Median -0.132
Mean -0.152
Scale 0.236
stdev 0.197
Z_min/Location -0.577/9.86667°Lat 19.9333°Lon
Z_max/Location 0.179/ 10.0667°Lat 23.0°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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Temperature at 50km depth
Salamat Basin location map
Statistics - Temperature at 50km depth
Median 749.979
Mean 749.977
Scale 1.254
stdev 1.147
Z_min/Location 746.796/9.7°Lat 21.4667°Lon
Z_max/Location 753.000/ 10.0°Lat 21.0°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
Salamat Basin location map
Statistics - Laske sediment thickness
Median 2.375
Mean 2.290
Scale 0.594
stdev 0.607
Z_min/Location 0.266/10.0667°Lat 23.0°Lon
Z_max/Location 3.158/ 10.0°Lat 20.4667°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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Lithospheric temperature gradient
Salamat Basin location map
Statistics - Lithospheric temperature gradient
Median 7.972
Mean 7.970
Scale 0.034
stdev 0.030
Z_min/Location 7.889/9.7°Lat 21.4667°Lon
Z_max/Location 8.047/ 10.0°Lat 21.0°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
Salamat Basin location map
Statistics - Isostatic correction
Median 0.973
Mean 0.936
Scale 0.229
stdev 0.238
Z_min/Location 0.115/10.0667°Lat 23.0°Lon
Z_max/Location 1.267/10.0°Lat 20.4667°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)
Salamat Basin location map
Statistics - TTS (sediment)
Median -0.808
Mean -0.784
Scale 0.112
stdev 0.117
Z_min/Location -0.947/10.0333°Lat 21.4333°Lon
Z_max/Location -0.294/10.0667°Lat 23.0°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 (Sediment)
Salamat Basin location map
Statistics - Beta (Sediment)
Median 0.906
Mean 0.909
Scale 0.012
stdev 0.013
Z_min/Location 0.892/10.0333°Lat 21.4333°Lon
Z_max/Location 0.964/10.0667°Lat 23.0°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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Crustal vs lithosph. extn.
Salamat Basin location map
Statistics - Crustal vs lithosph. extn.
Median -0.003
Mean -0.011
Scale 0.021
stdev 0.022
Z_min/Location -0.066/9.7°Lat 19.9333°Lon
Z_max/Location 0.016/9.86667°Lat 22.4667°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
Salamat Basin location map
Statistics - Anomalous TTS
Median -0.771
Mean -0.712
Scale 0.192
stdev 0.214
Z_min/Location -0.963/10.1°Lat 21.8°Lon
Z_max/Location -0.056/9.73333°Lat 19.9°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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Predicted elevation
Salamat Basin location map
Statistics - Predicted elevation
Median 1489.150
Mean 1507.270
Scale 63.646
stdev 61.657
Z_min/Location 1432.930/9.86667°Lat 22.4667°Lon
Z_max/Location 1654.020/9.73333°Lat 19.9°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 (Crust)
Salamat Basin location map
Statistics - Beta (Crust)
Median 0.998
Mean 0.991
Scale 0.021
stdev 0.021
Z_min/Location 0.939/9.7°Lat 19.9333°Lon
Z_max/Location 1.014/9.86667°Lat 22.4333°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)
Salamat Basin location map
Statistics - TTS (crust)
Median -0.018
Mean -0.071
Scale 0.161
stdev 0.170
Z_min/Location -0.507/9.7°Lat 19.9333°Lon
Z_max/Location 0.108/9.86667°Lat 22.4333°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
Salamat Basin location map
Statistics - Differential Beta
Median -0.089
Mean -0.082
Scale 0.023
stdev 0.025
Z_min/Location -0.111/10.1°Lat 21.8667°Lon
Z_max/Location -0.006/9.73333°Lat 19.9°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 02:36:30 CEST | © Christian Heine, School of Geosciences, Sydney University, Australia