ICONS atlas: AFR - Muglad Basin

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Overview

This page bundles the available data for the Muglad 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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Muglad Basin location map

Basin name	Muglad Basin
Region code	AFR
Basin ID	7300
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.

Muglad Basin cross section

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Dynamic topography evolution for basin centroid

Muglad 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

Muglad Basin location map

Statistics - Mantle Lid thickness
Median	81.805
Mean	86.106
Scale	2.473
stdev	11.314
Z_min/Location	65.323/4.5°Lat 32.4333°Lon
Z_max/Location	128.637/ 13.0°Lat 27.0°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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Depth of 550 deg isotherm

Muglad Basin location map

Statistics - Depth of 550 deg isotherm
Median	-37.152
Mean	-38.165
Scale	0.278
stdev	2.012
Z_min/Location	-46.000/13.0°Lat 27.0°Lon
Z_max/Location	-32.638/ 4.5°Lat 32.4333°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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Mobil isopachs

Muglad Basin location map

Statistics - Mobil isopachs
Median	3.151
Mean	2.921
Scale	1.740
stdev	1.431
Z_min/Location	-0.486/10.5667°Lat 30.2°Lon
Z_max/Location	5.053/ 9.8°Lat 27.5°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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Plain crustal thickness

Muglad Basin location map

Statistics - Plain crustal thickness
Median	36.969
Mean	37.342
Scale	0.734
stdev	1.530
Z_min/Location	35.463/4.6°Lat 32.3°Lon
Z_max/Location	43.406/ 6.03333°Lat 32.3333°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

Muglad Basin location map

Statistics - Base middle crust
Median	-25.986
Mean	-26.102
Scale	1.548
stdev	1.292
Z_min/Location	-29.692/6.16667°Lat 32.3°Lon
Z_max/Location	-24.003/ 4.6°Lat 32.3°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

Muglad Basin location map

Statistics - Base lower crust
Median	-37.877
Mean	-38.012
Scale	2.173
stdev	1.807
Z_min/Location	-42.769/6.16667°Lat 32.3°Lon
Z_max/Location	-34.775/ 4.6°Lat 32.3°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

Muglad Basin location map

Statistics - Total crustal thickness
Median	38.367
Mean	38.550
Scale	2.164
stdev	1.810
Z_min/Location	35.740/7.86667°Lat 29.3333°Lon
Z_max/Location	43.431/ 6.16667°Lat 32.3°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

Muglad Basin location map

Statistics - Base upper crust
Median	-13.533
Mean	-13.497
Scale	1.598
stdev	1.386
Z_min/Location	-16.462/10.5667°Lat 30.2°Lon
Z_max/Location	-11.146/ 7.63333°Lat 29.3333°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

Muglad Basin location map

Statistics - Thermal lithospheric thickness
Median	119.048
Mean	124.656
Scale	1.607
stdev	11.549
Z_min/Location	101.177/4.5°Lat 32.4333°Lon
Z_max/Location	167.000/ 13.0°Lat 27.0°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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Heatflow

Muglad Basin location map

Statistics - Heatflow
Median	74.353
Mean	73.519
Scale	5.132
stdev	4.727
Z_min/Location	62.000/9.96667°Lat 25.7333°Lon
Z_max/Location	83.964/ 12.1°Lat 28.2°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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Topography (ETOPO2)

Muglad Basin location map

Statistics - Topography (ETOPO2)
Median	420.000
Mean	433.858
Scale	41.513
stdev	51.388
Z_min/Location	292.000/8.83333°Lat 29.9667°Lon
Z_max/Location	845.000/ 4.6°Lat 32.3°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

Muglad Basin location map

Statistics - Base hard sediments
Median	-0.413
Mean	-0.670
Scale	1.296
stdev	1.154
Z_min/Location	-3.337/10.4°Lat 30.0333°Lon
Z_max/Location	0.912/ 5.33333°Lat 32.5333°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

Muglad Basin location map

Statistics - Temperature at 50km depth
Median	747.989
Mean	731.825
Scale	7.552
stdev	36.251
Z_min/Location	606.000/13.0°Lat 27.0°Lon
Z_max/Location	868.683/ 4.5°Lat 32.4333°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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Laske sediment thickness

Muglad Basin location map

Statistics - Laske sediment thickness
Median	1.709
Mean	1.988
Scale	1.845
stdev	1.628
Z_min/Location	-0.126/9.63333°Lat 26.5667°Lon
Z_max/Location	6.163/ 10.3°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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Lithospheric temperature gradient

Muglad Basin location map

Statistics - Lithospheric temperature gradient
Median	7.944
Mean	7.708
Scale	0.154
stdev	0.523
Z_min/Location	5.987/13.0°Lat 27.0°Lon
Z_max/Location	8.828/ 4.63333°Lat 32.2667°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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Computations

Isostatic correction

Muglad Basin location map

Statistics - Isostatic correction
Median	0.712
Mean	0.796
Scale	0.740
stdev	0.622
Z_min/Location	0.000/10.0333°Lat 25.7°Lon
Z_max/Location	2.281/10.3°Lat 29.9333°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)

Muglad Basin location map

Statistics - TTS (sediment)
Median	-0.338
Mean	-0.126
Scale	0.538
stdev	0.642
Z_min/Location	-1.342/5.9°Lat 32.3667°Lon
Z_max/Location	1.736/10.5667°Lat 30.5°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)

Muglad Basin location map

Statistics - Beta (Sediment)
Median	0.959
Mean	0.991
Scale	0.061
stdev	0.086
Z_min/Location	0.854/5.9°Lat 32.3667°Lon
Z_max/Location	1.285/10.5667°Lat 30.5°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.

Muglad Basin location map

Statistics - Crustal vs lithosph. extn.
Median	0.027
Mean	0.040
Scale	0.026
stdev	0.089
Z_min/Location	-0.157/5.9°Lat 32.3667°Lon
Z_max/Location	0.300/13.0°Lat 27.0°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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Anomalous TTS

Muglad Basin location map

Statistics - Anomalous TTS
Median	-0.168
Mean	-0.076
Scale	0.723
stdev	0.660
Z_min/Location	-1.033/4.6°Lat 32.3°Lon
Z_max/Location	1.893/10.5667°Lat 30.5°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

Muglad Basin location map

Statistics - Predicted elevation
Median	1327.650
Mean	1318.380
Scale	150.398
stdev	199.922
Z_min/Location	592.937/13.0°Lat 27.0°Lon
Z_max/Location	1731.240/5.93333°Lat 32.3667°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)

Muglad Basin location map

Statistics - Beta (Crust)
Median	1.004
Mean	0.995
Scale	0.020
stdev	0.038
Z_min/Location	0.855/6.03333°Lat 32.3333°Lon
Z_max/Location	1.046/4.6°Lat 32.3°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)

Muglad Basin location map

Statistics - TTS (crust)
Median	0.028
Mean	-0.050
Scale	0.155
stdev	0.322
Z_min/Location	-1.329/6.03333°Lat 32.3333°Lon
Z_max/Location	0.346/4.6°Lat 32.3°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

Muglad Basin location map

Statistics - Differential Beta
Median	-0.020
Mean	-0.004
Scale	0.089
stdev	0.089
Z_min/Location	-0.127/4.6°Lat 32.3°Lon
Z_max/Location	0.305/10.5667°Lat 30.5°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