ICONS atlas: AFR - Abadla Basin

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Overview

This page bundles the available data for the Abadla 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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Abadla Basin location map
Basin name Abadla Basin
Region code AFR
Basin ID 7180
Plate location/code /
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.

Abadla Basin cross section
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Dynamic topography evolution for basin centroid
Abadla 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
Abadla Basin location map
Statistics - Mantle Lid thickness
Median 62.090
Mean 62.207
Scale 0.691
stdev 0.596
Z_min/Location 61.352/31.0°Lat -3.0°Lon
Z_max/Location 63.739/ 31.6°Lat -2.06667°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
Abadla Basin location map
Statistics - Depth of 550 deg isotherm
Median -34.004
Mean -34.009
Scale 0.005
stdev 0.011
Z_min/Location -34.069/30.2333°Lat -2.6°Lon
Z_max/Location -34.000/ 31.6°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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Mobil isopachs
Abadla Basin location map
Statistics - Mobil isopachs
Median 2.319
Mean 2.475
Scale 1.291
stdev 0.983
Z_min/Location 0.904/31.2667°Lat -4.36667°Lon
Z_max/Location 4.330/ 31.2333°Lat -2.06667°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
Abadla Basin location map
Statistics - Plain crustal thickness
Median 36.405
Mean 36.098
Scale 1.797
stdev 1.644
Z_min/Location 31.979/31.6°Lat -2.06667°Lon
Z_max/Location 38.672/ 30.2333°Lat -2.66667°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
Abadla Basin location map
Statistics - Base middle crust
Median -26.282
Mean -26.262
Scale 0.745
stdev 0.590
Z_min/Location -27.394/30.2333°Lat -2.6°Lon
Z_max/Location -25.120/ 31.3667°Lat -3.83333°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
Abadla Basin location map
Statistics - Base lower crust
Median -37.807
Mean -37.918
Scale 1.369
stdev 1.108
Z_min/Location -40.169/30.2333°Lat -2.6°Lon
Z_max/Location -35.857/ 31.6667°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
Abadla Basin location map
Statistics - Total crustal thickness
Median 38.526
Mean 38.591
Scale 1.275
stdev 1.054
Z_min/Location 36.636/31.6667°Lat -2.9°Lon
Z_max/Location 40.716/ 30.2333°Lat -2.66667°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
Abadla Basin location map
Statistics - Base upper crust
Median -14.222
Mean -14.089
Scale 0.719
stdev 0.756
Z_min/Location -15.404/31.4667°Lat -2.03333°Lon
Z_max/Location -12.025/ 31.2667°Lat -4.36667°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
Abadla Basin location map
Statistics - Thermal lithospheric thickness
Median 100.622
Mean 100.798
Scale 0.658
stdev 0.650
Z_min/Location 100.000/31.0°Lat -3.0°Lon
Z_max/Location 102.945/ 30.2333°Lat -2.6°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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Heatflow
Abadla Basin location map
Statistics - Heatflow
Median 67.390
Mean 67.306
Scale 1.132
stdev 0.982
Z_min/Location 64.679/30.2333°Lat -2.6°Lon
Z_max/Location 69.647/ 31.2667°Lat -4.36667°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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Topography (ETOPO2)
Abadla Basin location map
Statistics - Topography (ETOPO2)
Median 717.000
Mean 724.428
Scale 128.986
stdev 123.235
Z_min/Location 490.000/30.7667°Lat -2.4°Lon
Z_max/Location 1074.000/ 31.5333°Lat -2.2°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
Abadla Basin location map
Statistics - Base hard sediments
Median -1.696
Mean -1.821
Scale 0.959
stdev 0.969
Z_min/Location -4.125/31.6°Lat -2.06667°Lon
Z_max/Location 0.315/ 31.2667°Lat -4.36667°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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Temperature at 50km depth
Abadla Basin location map
Statistics - Temperature at 50km depth
Median 830.645
Mean 829.813
Scale 2.539
stdev 2.713
Z_min/Location 820.408/30.2333°Lat -2.6°Lon
Z_max/Location 833.000/ 31.0°Lat -3.0°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
Abadla Basin location map
Statistics - Laske sediment thickness
Median 2.183
Mean 2.651
Scale 2.174
stdev 1.907
Z_min/Location 0.093/31.1333°Lat -4.36667°Lon
Z_max/Location 6.837/ 31.6667°Lat -2.73333°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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Lithospheric temperature gradient
Abadla Basin location map
Statistics - Lithospheric temperature gradient
Median 9.230
Mean 9.207
Scale 0.102
stdev 0.095
Z_min/Location 8.918/30.2333°Lat -2.6°Lon
Z_max/Location 9.332/ 31.0°Lat -3.0°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
Abadla Basin location map
Statistics - Isostatic correction
Median 0.898
Mean 1.040
Scale 0.859
stdev 0.705
Z_min/Location 0.040/31.1333°Lat -4.36667°Lon
Z_max/Location 2.483/31.6667°Lat -2.73333°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)
Abadla Basin location map
Statistics - TTS (sediment)
Median 1.001
Mean 0.780
Scale 0.334
stdev 0.544
Z_min/Location -0.642/31.4667°Lat -3.46667°Lon
Z_max/Location 1.822/31.6°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)
Abadla Basin location map
Statistics - Beta (Sediment)
Median 1.147
Mean 1.117
Scale 0.056
stdev 0.082
Z_min/Location 0.924/31.4667°Lat -3.46667°Lon
Z_max/Location 1.304/31.6°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.
Abadla Basin location map
Statistics - Crustal vs lithosph. extn.
Median 0.024
Mean 0.037
Scale 0.044
stdev 0.045
Z_min/Location -0.018/30.5333°Lat -3.7°Lon
Z_max/Location 0.165/31.6°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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Anomalous TTS
Abadla Basin location map
Statistics - Anomalous TTS
Median 0.732
Mean 0.543
Scale 0.581
stdev 0.609
Z_min/Location -1.083/31.5667°Lat -3.13333°Lon
Z_max/Location 1.410/30.3667°Lat -3.16667°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
Abadla Basin location map
Statistics - Predicted elevation
Median 1693.720
Mean 1693.980
Scale 78.273
stdev 63.185
Z_min/Location 1565.140/31.6667°Lat -2.73333°Lon
Z_max/Location 1800.820/30.3°Lat -2.93333°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)
Abadla Basin location map
Statistics - Beta (Crust)
Median 1.023
Mean 1.033
Scale 0.050
stdev 0.048
Z_min/Location 0.963/30.2333°Lat -2.66667°Lon
Z_max/Location 1.164/31.6°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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TTS (crust)
Abadla Basin location map
Statistics - TTS (crust)
Median 0.172
Mean 0.237
Scale 0.378
stdev 0.345
Z_min/Location -0.304/30.2333°Lat -2.66667°Lon
Z_max/Location 1.102/31.6°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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Differential Beta
Abadla Basin location map
Statistics - Differential Beta
Median 0.116
Mean 0.084
Scale 0.079
stdev 0.088
Z_min/Location -0.139/31.5667°Lat -3.13333°Lon
Z_max/Location 0.204/30.3667°Lat -3.16667°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