ICONS atlas: AFR - Murzuq 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 Murzuq 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:

Murzuq Basin location map
Basin name Murzuq Basin
Region code AFR
Basin ID 7250
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.

Murzuq Basin cross section
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Dynamic topography evolution for basin centroid
Murzuq 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
Murzuq Basin location map
Statistics - Mantle Lid thickness
Median 134.914
Mean 131.895
Scale 11.360
stdev 15.838
Z_min/Location 85.327/28.1°Lat 15.9333°Lon
Z_max/Location 159.000/ 24.0°Lat 11.0°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
Murzuq Basin location map
Statistics - Depth of 550 deg isotherm
Median -47.533
Mean -46.850
Scale 1.981
stdev 3.016
Z_min/Location -53.000/24.0°Lat 11.0°Lon
Z_max/Location -38.046/ 28.1333°Lat 15.9333°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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Mobil isopachs
Murzuq Basin location map
Statistics - Mobil isopachs
Median 1.302
Mean 1.335
Scale 0.828
stdev 0.658
Z_min/Location -0.056/21.2667°Lat 11.9333°Lon
Z_max/Location 2.534/ 24.9333°Lat 12.3°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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Plain crustal thickness
Murzuq Basin location map
Statistics - Plain crustal thickness
Median 40.651
Mean 40.120
Scale 1.256
stdev 1.598
Z_min/Location 36.704/26.6667°Lat 14.0°Lon
Z_max/Location 43.068/ 21.9333°Lat 16.2333°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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Base middle crust
Murzuq Basin location map
Statistics - Base middle crust
Median -27.124
Mean -27.172
Scale 0.539
stdev 0.680
Z_min/Location -29.432/22.1333°Lat 16.0°Lon
Z_max/Location -25.576/ 20.2333°Lat 14.0°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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Base lower crust
Murzuq Basin location map
Statistics - Base lower crust
Median -40.826
Mean -40.518
Scale 1.261
stdev 1.181
Z_min/Location -42.401/22.1333°Lat 16.0°Lon
Z_max/Location -37.708/ 20.2333°Lat 14.0°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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Total crustal thickness
Murzuq Basin location map
Statistics - Total crustal thickness
Median 41.556
Mean 41.195
Scale 1.175
stdev 1.213
Z_min/Location 38.172/20.2333°Lat 14.0°Lon
Z_max/Location 43.036/ 21.9333°Lat 16.2333°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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Base upper crust
Murzuq Basin location map
Statistics - Base upper crust
Median -13.525
Mean -13.596
Scale 0.483
stdev 0.435
Z_min/Location -14.598/27.6667°Lat 14.5333°Lon
Z_max/Location -12.862/ 25.8333°Lat 10.4333°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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Thermal lithospheric thickness
Murzuq Basin location map
Statistics - Thermal lithospheric thickness
Median 176.824
Mean 173.091
Scale 12.174
stdev 16.647
Z_min/Location 124.216/28.1667°Lat 15.9333°Lon
Z_max/Location 200.000/ 24.0°Lat 11.0°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
Murzuq Basin location map
Statistics - Heatflow
Median 75.964
Mean 76.088
Scale 2.422
stdev 2.086
Z_min/Location 70.791/26.0°Lat 10.4°Lon
Z_max/Location 80.574/ 27.8°Lat 13.8667°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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Topography (ETOPO2)
Murzuq Basin location map
Statistics - Topography (ETOPO2)
Median 595.000
Mean 629.090
Scale 151.225
stdev 168.216
Z_min/Location 287.000/27.4333°Lat 13.9667°Lon
Z_max/Location 2724.000/ 21.0667°Lat 16.4333°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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Base hard sediments
Murzuq Basin location map
Statistics - Base hard sediments
Median -0.334
Mean -0.398
Scale 0.480
stdev 0.553
Z_min/Location -1.604/27.6°Lat 14.5333°Lon
Z_max/Location 0.999/ 25.8333°Lat 10.4333°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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Temperature at 50km depth
Murzuq Basin location map
Statistics - Temperature at 50km depth
Median 584.703
Mean 596.954
Scale 25.266
stdev 41.709
Z_min/Location 539.000/24.0°Lat 11.0°Lon
Z_max/Location 729.260/ 28.1667°Lat 15.9333°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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Laske sediment thickness
Murzuq Basin location map
Statistics - Laske sediment thickness
Median 1.045
Mean 1.305
Scale 0.534
stdev 0.670
Z_min/Location 0.262/23.8333°Lat 10.9333°Lon
Z_max/Location 3.009/ 26.0667°Lat 13.0667°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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Lithospheric temperature gradient
Murzuq Basin location map
Statistics - Lithospheric temperature gradient
Median 5.598
Mean 5.796
Scale 0.262
stdev 0.512
Z_min/Location 5.071/24.0°Lat 11.0°Lon
Z_max/Location 7.677/ 28.1°Lat 15.9333°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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Computations

Isostatic correction
Murzuq Basin location map
Statistics - Isostatic correction
Median 0.442
Mean 0.544
Scale 0.222
stdev 0.269
Z_min/Location 0.113/23.8333°Lat 10.9333°Lon
Z_max/Location 1.212/26.0667°Lat 13.0667°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)
Murzuq Basin location map
Statistics - TTS (sediment)
Median -0.157
Mean -0.146
Scale 0.481
stdev 0.446
Z_min/Location -1.247/25.8333°Lat 10.4333°Lon
Z_max/Location 1.149/27.9333°Lat 14.8333°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)
Murzuq Basin location map
Statistics - Beta (Sediment)
Median 0.980
Mean 0.985
Scale 0.059
stdev 0.056
Z_min/Location 0.862/25.8333°Lat 10.4333°Lon
Z_max/Location 1.172/27.9333°Lat 14.8333°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.
Murzuq Basin location map
Statistics - Crustal vs lithosph. extn.
Median -0.040
Mean -0.064
Scale 0.041
stdev 0.091
Z_min/Location -0.387/28.1°Lat 15.9333°Lon
Z_max/Location 0.080/23.9667°Lat 10.8333°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
Murzuq Basin location map
Statistics - Anomalous TTS
Median -0.250
Mean -0.271
Scale 0.352
stdev 0.334
Z_min/Location -1.345/25.9667°Lat 10.4°Lon
Z_max/Location 0.430/27.9333°Lat 14.8333°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
Murzuq Basin location map
Statistics - Predicted elevation
Median 637.574
Mean 675.560
Scale 166.830
stdev 247.294
Z_min/Location 174.049/23.9667°Lat 10.8333°Lon
Z_max/Location 1362.710/27.9667°Lat 15.0667°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)
Murzuq Basin location map
Statistics - Beta (Crust)
Median 1.003
Mean 1.018
Scale 0.031
stdev 0.042
Z_min/Location 0.947/21.9333°Lat 16.2333°Lon
Z_max/Location 1.111/26.6667°Lat 14.0°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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TTS (crust)
Murzuq Basin location map
Statistics - TTS (crust)
Median 0.023
Mean 0.125
Scale 0.241
stdev 0.306
Z_min/Location -0.441/21.9333°Lat 16.2333°Lon
Z_max/Location 0.780/26.6667°Lat 14.0°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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Differential Beta
Murzuq Basin location map
Statistics - Differential Beta
Median -0.032
Mean -0.033
Scale 0.043
stdev 0.041
Z_min/Location -0.150/25.9667°Lat 10.4°Lon
Z_max/Location 0.071/27.9333°Lat 14.8333°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