ICONS atlas: AFR - Kerri Basin

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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.

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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