To view the data for individual basins, select a basin from the dropdown menu below or click the basin name in the overview table. This will open a separate page with detailed maps. 
Overview  

This page bundles the available data for the Chad Basin
in the Africa. The
images are hyperlinks and will open up a separate window with a high
resolution PDF image of the map. 


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 dasheddotted thin black line. For the endpoints of the profile, the two points of a given polygon located farthest away from each other were computed. 
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Dynamic topography evolution for basin centroid 

The dynamic topography history for the basin is derived by tracking the basin centroid. The paleolocation 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:

Mantle Lid thickness  

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Depth of 550 deg isotherm  

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Mobil isopachs  

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Plain crustal thickness  

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Base middle crust  

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Base lower crust  

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Total crustal thickness  

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Base upper crust  

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Thermal lithospheric thickness  

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Heatflow  

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Topography (ETOPO2)  

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Base hard sediments  

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Temperature at 50km depth  

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Laske sediment thickness  

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Lithospheric temperature gradient  

For explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Isostatic correction  

CommentsFor explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
TTS (sediment)  

CommentsFor explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Beta (Sediment)  

CommentsFor explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Crustal vs lithosph. extn.  

CommentsFor explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Anomalous TTS  

CommentsFor explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Predicted elevation  

CommentsFor explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Beta (Crust)  

CommentsFor explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
TTS (crust)  

CommentsFor explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
Differential Beta  

CommentsFor explanation to the data source or computation of this grid please follow this link. Clicking the image will open a highres 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. ↑ back to the top 
This basin data is based on interpolated global grids and might contain gridding errors or wrongly interpolated data values.