ICONS atlas: AFR - Salamat Basin

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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.

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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