ICONS atlas: AFR - Gindi Basin

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Overview

This page bundles the available data for the Gindi 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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Gindi Basin location map
Basin name Gindi Basin
Region code AFR
Basin ID 7080
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.

Gindi Basin cross section
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Dynamic topography evolution for basin centroid
Gindi 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
Gindi Basin location map
Statistics - Mantle Lid thickness
Median 89.823
Mean 89.815
Scale 0.739
stdev 0.630
Z_min/Location 88.476/29.0333°Lat 30.7333°Lon
Z_max/Location 91.038/ 29.9333°Lat 30.7°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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Depth of 550 deg isotherm
Gindi Basin location map
Statistics - Depth of 550 deg isotherm
Median -37.987
Mean -37.983
Scale 0.008
stdev 0.011
Z_min/Location -37.999/29.0333°Lat 31.0°Lon
Z_max/Location -37.937/ 29.0667°Lat 30.5667°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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Mobil isopachs
Gindi Basin location map
Statistics - Mobil isopachs
Median 3.996
Mean 3.951
Scale 0.087
stdev 0.113
Z_min/Location 3.607/29.5667°Lat 31.4333°Lon
Z_max/Location 4.082/ 29.5°Lat 30.5°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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Plain crustal thickness
Gindi Basin location map
Statistics - Plain crustal thickness
Median 29.660
Mean 29.601
Scale 0.675
stdev 0.562
Z_min/Location 28.394/29.9667°Lat 31.3667°Lon
Z_max/Location 30.531/ 29.0667°Lat 30.5667°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 middle crust
Gindi Basin location map
Statistics - Base middle crust
Median -23.147
Mean -23.150
Scale 0.207
stdev 0.162
Z_min/Location -23.452/29.0667°Lat 30.5667°Lon
Z_max/Location -22.873/ 29.9667°Lat 31.3667°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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Base lower crust
Gindi Basin location map
Statistics - Base lower crust
Median -32.649
Mean -32.659
Scale 0.595
stdev 0.471
Z_min/Location -33.545/29.1333°Lat 30.3667°Lon
Z_max/Location -31.823/ 29.9667°Lat 31.3667°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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Total crustal thickness
Gindi Basin location map
Statistics - Total crustal thickness
Median 32.895
Mean 32.903
Scale 0.610
stdev 0.484
Z_min/Location 32.035/29.9667°Lat 31.3667°Lon
Z_max/Location 33.808/ 29.1333°Lat 30.3667°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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Base upper crust
Gindi Basin location map
Statistics - Base upper crust
Median -13.409
Mean -13.428
Scale 0.060
stdev 0.081
Z_min/Location -13.651/29.2667°Lat 29.9333°Lon
Z_max/Location -13.255/ 29.4667°Lat 31.4°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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Thermal lithospheric thickness
Gindi Basin location map
Statistics - Thermal lithospheric thickness
Median 122.748
Mean 122.718
Scale 0.374
stdev 0.322
Z_min/Location 121.999/29.0667°Lat 31.0667°Lon
Z_max/Location 123.308/ 29.7°Lat 30.3°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
Gindi Basin location map
Statistics - Heatflow
Median 65.087
Mean 65.139
Scale 0.759
stdev 0.640
Z_min/Location 63.885/29.9333°Lat 30.7°Lon
Z_max/Location 66.529/ 29.0667°Lat 30.5667°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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Topography (ETOPO2)
Gindi Basin location map
Statistics - Topography (ETOPO2)
Median 45.000
Mean 83.082
Scale 53.374
stdev 91.497
Z_min/Location -55.000/29.4667°Lat 30.4°Lon
Z_max/Location 337.000/ 29.5333°Lat 30.2°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
Gindi Basin location map
Statistics - Base hard sediments
Median -3.041
Mean -3.060
Scale 0.094
stdev 0.124
Z_min/Location -3.433/29.9667°Lat 31.3°Lon
Z_max/Location -2.825/ 29.1667°Lat 31.1667°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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Temperature at 50km depth
Gindi Basin location map
Statistics - Temperature at 50km depth
Median 732.930
Mean 733.072
Scale 1.114
stdev 0.980
Z_min/Location 731.341/29.9333°Lat 30.9667°Lon
Z_max/Location 735.244/ 29.1667°Lat 31.1667°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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Laske sediment thickness
Gindi Basin location map
Statistics - Laske sediment thickness
Median 2.761
Mean 2.806
Scale 0.330
stdev 0.324
Z_min/Location 2.301/29.0667°Lat 31.0667°Lon
Z_max/Location 3.727/ 29.3°Lat 29.8333°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
Gindi Basin location map
Statistics - Lithospheric temperature gradient
Median 7.819
Mean 7.822
Scale 0.028
stdev 0.026
Z_min/Location 7.772/29.7°Lat 30.3°Lon
Z_max/Location 7.899/ 29.0333°Lat 31.0°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
Gindi Basin location map
Statistics - Isostatic correction
Median 1.120
Mean 1.136
Scale 0.124
stdev 0.121
Z_min/Location 0.944/29.0667°Lat 31.0667°Lon
Z_max/Location 1.474/29.3°Lat 29.8333°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)
Gindi Basin location map
Statistics - TTS (sediment)
Median 1.919
Mean 1.925
Scale 0.129
stdev 0.135
Z_min/Location 1.641/29.3°Lat 29.8333°Lon
Z_max/Location 2.225/29.9667°Lat 31.0667°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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Beta (Sediment)
Gindi Basin location map
Statistics - Beta (Sediment)
Median 1.325
Mean 1.327
Scale 0.029
stdev 0.030
Z_min/Location 1.266/29.3°Lat 29.8333°Lon
Z_max/Location 1.398/29.9667°Lat 31.0667°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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Crustal vs lithosph. extn.
Gindi Basin location map
Statistics - Crustal vs lithosph. extn.
Median 0.010
Mean 0.012
Scale 0.024
stdev 0.020
Z_min/Location -0.023/29.0333°Lat 30.7333°Lon
Z_max/Location 0.056/29.9667°Lat 31.2667°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
Gindi Basin location map
Statistics - Anomalous TTS
Median 1.837
Mean 1.835
Scale 0.090
stdev 0.087
Z_min/Location 1.647/29.7667°Lat 31.4333°Lon
Z_max/Location 2.045/29.0333°Lat 30.8°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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Predicted elevation
Gindi Basin location map
Statistics - Predicted elevation
Median 884.474
Mean 883.951
Scale 60.284
stdev 48.129
Z_min/Location 795.249/29.9667°Lat 31.0667°Lon
Z_max/Location 974.492/29.0667°Lat 30.5667°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)
Gindi Basin location map
Statistics - Beta (Crust)
Median 1.010
Mean 1.012
Scale 0.023
stdev 0.019
Z_min/Location 0.981/29.0667°Lat 30.5667°Lon
Z_max/Location 1.055/29.9667°Lat 31.3667°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)
Gindi Basin location map
Statistics - TTS (crust)
Median 0.075
Mean 0.090
Scale 0.176
stdev 0.147
Z_min/Location -0.153/29.0667°Lat 30.5667°Lon
Z_max/Location 0.405/29.9667°Lat 31.3667°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
Gindi Basin location map
Statistics - Differential Beta
Median 0.320
Mean 0.315
Scale 0.017
stdev 0.018
Z_min/Location 0.273/29.4333°Lat 29.9667°Lon
Z_max/Location 0.344/29.9667°Lat 31.0667°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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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