ICONS atlas: AFR - Melut Basin

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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.

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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