ICONS atlas: AFR - Kerri Basin

Regional basin list

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Overview

This page bundles the available data for the Kerri 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:

Kerri Basin location map
Basin name Kerri Basin
Region code AFR
Basin ID 7540
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.

Kerri Basin cross section
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Dynamic topography evolution for basin centroid
Kerri 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
Kerri Basin location map
Statistics - Mantle Lid thickness
Median 89.596
Mean 89.132
Scale 4.965
stdev 4.891
Z_min/Location 78.256/9.86667°Lat 10.7333°Lon
Z_max/Location 100.795/ 11.5333°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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Depth of 550 deg isotherm
Kerri Basin location map
Statistics - Depth of 550 deg isotherm
Median -38.886
Mean -38.578
Scale 1.532
stdev 1.460
Z_min/Location -41.706/11.5333°Lat 10.0667°Lon
Z_max/Location -35.497/ 9.86667°Lat 10.7333°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
Kerri Basin location map
Statistics - Mobil isopachs
Median 1.222
Mean 1.141
Scale 0.294
stdev 0.449
Z_min/Location -0.537/9.66667°Lat 10.0667°Lon
Z_max/Location 1.976/ 11.6333°Lat 11.4333°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
Kerri Basin location map
Statistics - Plain crustal thickness
Median 39.265
Mean 39.313
Scale 2.229
stdev 1.625
Z_min/Location 36.554/9.5°Lat 10.0333°Lon
Z_max/Location 41.945/ 11.5667°Lat 10.1°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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Base middle crust
Kerri Basin location map
Statistics - Base middle crust
Median -26.743
Mean -26.809
Scale 1.365
stdev 0.981
Z_min/Location -28.604/11.5667°Lat 10.1°Lon
Z_max/Location -25.452/ 9.73333°Lat 10.1333°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
Kerri Basin location map
Statistics - Base lower crust
Median -39.509
Mean -39.564
Scale 1.919
stdev 1.372
Z_min/Location -41.818/11.9°Lat 11.0°Lon
Z_max/Location -37.408/ 9.66667°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
Kerri Basin location map
Statistics - Total crustal thickness
Median 39.996
Mean 40.068
Scale 1.982
stdev 1.418
Z_min/Location 37.845/9.56667°Lat 10.0333°Lon
Z_max/Location 42.381/ 11.9°Lat 11.0°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
Kerri Basin location map
Statistics - Base upper crust
Median -13.767
Mean -13.768
Scale 0.158
stdev 0.138
Z_min/Location -14.135/11.5667°Lat 10.1°Lon
Z_max/Location -13.540/ 10.0667°Lat 10.2333°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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Thermal lithospheric thickness
Kerri Basin location map
Statistics - Thermal lithospheric thickness
Median 130.084
Mean 129.200
Scale 6.260
stdev 5.929
Z_min/Location 116.402/9.73333°Lat 10.5667°Lon
Z_max/Location 142.835/ 11.5333°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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Heatflow
Kerri Basin location map
Statistics - Heatflow
Median 80.745
Mean 81.403
Scale 4.742
stdev 4.217
Z_min/Location 75.770/9.9°Lat 10.7667°Lon
Z_max/Location 93.925/ 11.5667°Lat 10.1°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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Topography (ETOPO2)
Kerri Basin location map
Statistics - Topography (ETOPO2)
Median 445.000
Mean 434.947
Scale 48.926
stdev 61.551
Z_min/Location 265.000/9.7°Lat 10.5°Lon
Z_max/Location 747.000/ 10.9333°Lat 11.1667°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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Base hard sediments
Kerri Basin location map
Statistics - Base hard sediments
Median -0.267
Mean -0.250
Scale 0.324
stdev 0.286
Z_min/Location -0.879/9.5°Lat 10.0333°Lon
Z_max/Location 0.481/ 11.5667°Lat 10.1°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
Kerri Basin location map
Statistics - Temperature at 50km depth
Median 717.562
Mean 725.307
Scale 28.461
stdev 28.486
Z_min/Location 670.547/11.5333°Lat 10.0667°Lon
Z_max/Location 788.600/ 9.73333°Lat 10.5667°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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Laske sediment thickness
Kerri Basin location map
Statistics - Laske sediment thickness
Median 0.865
Mean 0.901
Scale 0.448
stdev 0.421
Z_min/Location 0.004/11.5333°Lat 10.0667°Lon
Z_max/Location 1.945/ 10.2°Lat 11.0667°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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Lithospheric temperature gradient
Kerri Basin location map
Statistics - Lithospheric temperature gradient
Median 7.467
Mean 7.557
Scale 0.379
stdev 0.351
Z_min/Location 6.934/11.5333°Lat 10.0667°Lon
Z_max/Location 8.649/ 10.0667°Lat 10.9333°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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Computations

Isostatic correction
Kerri Basin location map
Statistics - Isostatic correction
Median 0.368
Mean 0.381
Scale 0.187
stdev 0.174
Z_min/Location 0.002/11.5333°Lat 10.0667°Lon
Z_max/Location 0.805/10.2°Lat 11.0667°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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TTS (sediment)
Kerri Basin location map
Statistics - TTS (sediment)
Median -0.163
Mean -0.131
Scale 0.178
stdev 0.219
Z_min/Location -0.490/11.5667°Lat 10.1°Lon
Z_max/Location 0.532/9.56667°Lat 10.0333°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)
Kerri Basin location map
Statistics - Beta (Sediment)
Median 0.980
Mean 0.984
Scale 0.022
stdev 0.028
Z_min/Location 0.941/11.5667°Lat 10.1°Lon
Z_max/Location 1.073/9.56667°Lat 10.0333°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.
Kerri Basin location map
Statistics - Crustal vs lithosph. extn.
Median 0.014
Mean 0.015
Scale 0.030
stdev 0.027
Z_min/Location -0.038/10.1°Lat 10.9667°Lon
Z_max/Location 0.080/10.5°Lat 10.2667°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
Kerri Basin location map
Statistics - Anomalous TTS
Median -0.162
Mean -0.200
Scale 0.172
stdev 0.167
Z_min/Location -0.620/10.0667°Lat 10.9333°Lon
Z_max/Location 0.048/11.9°Lat 11.1667°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
Kerri Basin location map
Statistics - Predicted elevation
Median 1370.700
Mean 1366.790
Scale 70.180
stdev 60.596
Z_min/Location 1224.240/10.5°Lat 10.2667°Lon
Z_max/Location 1481.400/11.6333°Lat 11.4333°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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Beta (Crust)
Kerri Basin location map
Statistics - Beta (Crust)
Median 1.010
Mean 1.011
Scale 0.057
stdev 0.042
Z_min/Location 0.946/11.5667°Lat 10.1°Lon
Z_max/Location 1.085/9.5°Lat 10.0333°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)
Kerri Basin location map
Statistics - TTS (crust)
Median 0.079
Mean 0.070
Scale 0.440
stdev 0.320
Z_min/Location -0.449/11.5667°Lat 10.1°Lon
Z_max/Location 0.614/9.5°Lat 10.0333°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
Kerri Basin location map
Statistics - Differential Beta
Median -0.021
Mean -0.026
Scale 0.023
stdev 0.022
Z_min/Location -0.082/10.0667°Lat 10.9333°Lon
Z_max/Location 0.006/11.9°Lat 11.1667°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