ICONS atlas: AFR - Melut Basin

Regional basin list

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.

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Overview

This page bundles the available data for the Melut 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:

Melut Basin location map
Basin name Melut Basin
Region code AFR
Basin ID 7060
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.

Melut Basin cross section
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Dynamic topography evolution for basin centroid
Melut 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
Melut Basin location map
Statistics - Mantle Lid thickness
Median 80.054
Mean 79.275
Scale 4.820
stdev 6.431
Z_min/Location 50.813/4.96667°Lat 34.1667°Lon
Z_max/Location 96.738/ 13.7°Lat 29.6667°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
Melut Basin location map
Statistics - Depth of 550 deg isotherm
Median -37.669
Mean -37.407
Scale 0.988
stdev 1.360
Z_min/Location -39.783/13.7°Lat 29.6667°Lon
Z_max/Location -30.597/ 4.96667°Lat 34.1667°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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Mobil isopachs
Melut Basin location map
Statistics - Mobil isopachs
Median 1.944
Mean 2.115
Scale 0.981
stdev 1.031
Z_min/Location -0.204/14.2°Lat 29.9333°Lon
Z_max/Location 4.645/ 7.46667°Lat 31.8667°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
Melut Basin location map
Statistics - Plain crustal thickness
Median 39.151
Mean 39.645
Scale 3.383
stdev 2.631
Z_min/Location 35.796/14.1°Lat 29.8667°Lon
Z_max/Location 43.994/ 5.9°Lat 33.2667°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
Melut Basin location map
Statistics - Base middle crust
Median -27.908
Mean -27.911
Scale 1.479
stdev 1.233
Z_min/Location -29.961/6.1°Lat 33.0°Lon
Z_max/Location -24.107/ 14.2°Lat 29.9333°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 lower crust
Melut Basin location map
Statistics - Base lower crust
Median -40.287
Mean -40.378
Scale 2.102
stdev 1.754
Z_min/Location -43.174/13.0°Lat 32.8333°Lon
Z_max/Location -35.025/ 14.2°Lat 29.9333°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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Total crustal thickness
Melut Basin location map
Statistics - Total crustal thickness
Median 40.759
Mean 40.890
Scale 2.245
stdev 1.835
Z_min/Location 35.693/14.2°Lat 29.9333°Lon
Z_max/Location 43.912/ 6.0°Lat 33.2°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 upper crust
Melut Basin location map
Statistics - Base upper crust
Median -14.618
Mean -14.555
Scale 0.504
stdev 0.819
Z_min/Location -16.323/9.86667°Lat 33.6667°Lon
Z_max/Location -11.116/ 14.2667°Lat 30.0667°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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Thermal lithospheric thickness
Melut Basin location map
Statistics - Thermal lithospheric thickness
Median 120.495
Mean 120.165
Scale 3.828
stdev 5.527
Z_min/Location 93.725/4.96667°Lat 34.1667°Lon
Z_max/Location 133.131/ 13.7°Lat 29.6667°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
Melut Basin location map
Statistics - Heatflow
Median 79.984
Mean 80.060
Scale 5.280
stdev 5.179
Z_min/Location 69.294/5.76667°Lat 32.4°Lon
Z_max/Location 93.268/ 10.0667°Lat 33.9667°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)
Melut Basin location map
Statistics - Topography (ETOPO2)
Median 402.000
Mean 406.993
Scale 42.995
stdev 74.898
Z_min/Location 267.000/9.93333°Lat 32.1667°Lon
Z_max/Location 985.000/ 5.76667°Lat 33.9667°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
Melut Basin location map
Statistics - Base hard sediments
Median -0.694
Mean -0.733
Scale 1.758
stdev 1.262
Z_min/Location -3.173/9.83333°Lat 33.7667°Lon
Z_max/Location 1.135/ 5.03333°Lat 33.8°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
Melut Basin location map
Statistics - Temperature at 50km depth
Median 742.746
Mean 748.192
Scale 15.381
stdev 30.554
Z_min/Location 702.215/13.7°Lat 29.6667°Lon
Z_max/Location 919.124/ 4.5°Lat 33.1°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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Laske sediment thickness
Melut Basin location map
Statistics - Laske sediment thickness
Median 1.038
Mean 1.349
Scale 1.188
stdev 1.267
Z_min/Location -0.502/11.1°Lat 31.4333°Lon
Z_max/Location 5.385/ 9.6°Lat 33.8667°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
Melut Basin location map
Statistics - Lithospheric temperature gradient
Median 7.833
Mean 7.973
Scale 0.211
stdev 0.425
Z_min/Location 7.201/13.7°Lat 29.6667°Lon
Z_max/Location 10.619/ 5.03333°Lat 34.1°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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Computations

Isostatic correction
Melut Basin location map
Statistics - Isostatic correction
Median 0.440
Mean 0.552
Scale 0.492
stdev 0.494
Z_min/Location 0.000/14.2°Lat 29.9333°Lon
Z_max/Location 2.037/9.6°Lat 33.8667°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)
Melut Basin location map
Statistics - TTS (sediment)
Median 0.083
Mean 0.181
Scale 1.293
stdev 0.972
Z_min/Location -1.348/5.86667°Lat 32.5333°Lon
Z_max/Location 1.894/10.1667°Lat 31.2°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)
Melut Basin location map
Statistics - Beta (Sediment)
Median 1.011
Mean 1.041
Scale 0.161
stdev 0.137
Z_min/Location 0.853/5.86667°Lat 32.5333°Lon
Z_max/Location 1.320/10.1667°Lat 31.2°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.
Melut Basin location map
Statistics - Crustal vs lithosph. extn.
Median 0.021
Mean -0.003
Scale 0.101
stdev 0.099
Z_min/Location -0.370/4.96667°Lat 34.1667°Lon
Z_max/Location 0.200/13.7°Lat 29.6667°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
Melut Basin location map
Statistics - Anomalous TTS
Median 0.007
Mean 0.097
Scale 0.705
stdev 0.602
Z_min/Location -1.650/14.2667°Lat 30.0667°Lon
Z_max/Location 1.372/10.1667°Lat 31.2°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
Melut Basin location map
Statistics - Predicted elevation
Median 1509.430
Mean 1541.120
Scale 158.055
stdev 165.139
Z_min/Location 1027.300/13.7333°Lat 29.6667°Lon
Z_max/Location 2080.100/4.96667°Lat 34.1667°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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Beta (Crust)
Melut Basin location map
Statistics - Beta (Crust)
Median 1.024
Mean 1.015
Scale 0.092
stdev 0.066
Z_min/Location 0.911/5.9°Lat 33.2667°Lon
Z_max/Location 1.119/14.1°Lat 29.8667°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)
Melut Basin location map
Statistics - TTS (crust)
Median 0.180
Mean 0.084
Scale 0.660
stdev 0.513
Z_min/Location -0.765/5.9°Lat 33.2667°Lon
Z_max/Location 0.835/14.1°Lat 29.8667°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
Melut Basin location map
Statistics - Differential Beta
Median 0.001
Mean 0.026
Scale 0.085
stdev 0.089
Z_min/Location -0.212/14.2667°Lat 30.0667°Lon
Z_max/Location 0.248/10.1667°Lat 31.2°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