ICONS atlas: AFR - Murzuq Basin

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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.

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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