ICONS atlas: AFR - Al Kufra Basin

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Overview

This page bundles the available data for the Al Kufra 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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Al Kufra Basin location map
Basin name Al Kufra Basin
Region code AFR
Basin ID 7270
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.

Al Kufra Basin cross section
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Dynamic topography evolution for basin centroid
Al Kufra 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
Al Kufra Basin location map
Statistics - Mantle Lid thickness
Median 127.491
Mean 125.709
Scale 7.816
stdev 11.605
Z_min/Location 91.000/17.0°Lat 22.0°Lon
Z_max/Location 155.000/ 22.0°Lat 24.0°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
Al Kufra Basin location map
Statistics - Depth of 550 deg isotherm
Median -45.922
Mean -45.490
Scale 1.717
stdev 2.221
Z_min/Location -51.046/22.0333°Lat 24.2333°Lon
Z_max/Location -39.000/ 17.0°Lat 22.0°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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Mobil isopachs
Al Kufra Basin location map
Statistics - Mobil isopachs
Median 0.863
Mean 1.043
Scale 1.089
stdev 0.878
Z_min/Location -0.317/21.3333°Lat 24.4333°Lon
Z_max/Location 2.732/ 20.0°Lat 21.3°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
Al Kufra Basin location map
Statistics - Plain crustal thickness
Median 39.012
Mean 39.373
Scale 1.357
stdev 1.735
Z_min/Location 35.394/15.3°Lat 26.2°Lon
Z_max/Location 43.868/ 18.6667°Lat 26.6333°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
Al Kufra Basin location map
Statistics - Base middle crust
Median -26.985
Mean -26.585
Scale 1.223
stdev 1.413
Z_min/Location -30.106/18.7°Lat 26.6667°Lon
Z_max/Location -23.564/ 15.2333°Lat 26.1333°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
Al Kufra Basin location map
Statistics - Base lower crust
Median -40.269
Mean -39.627
Scale 2.169
stdev 1.993
Z_min/Location -43.242/18.7°Lat 26.6°Lon
Z_max/Location -34.355/ 15.2°Lat 26.1333°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
Al Kufra Basin location map
Statistics - Total crustal thickness
Median 40.815
Mean 40.257
Scale 1.996
stdev 1.851
Z_min/Location 35.383/15.2333°Lat 26.1333°Lon
Z_max/Location 43.813/ 18.6667°Lat 26.6°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
Al Kufra Basin location map
Statistics - Base upper crust
Median -13.372
Mean -13.187
Scale 1.298
stdev 1.018
Z_min/Location -14.778/18.7333°Lat 26.5667°Lon
Z_max/Location -10.632/ 15.1333°Lat 25.8333°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
Al Kufra Basin location map
Statistics - Thermal lithospheric thickness
Median 168.721
Mean 165.967
Scale 9.178
stdev 12.254
Z_min/Location 130.000/17.0°Lat 22.0°Lon
Z_max/Location 196.000/ 22.0°Lat 24.0°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
Al Kufra Basin location map
Statistics - Heatflow
Median 75.856
Mean 75.321
Scale 4.350
stdev 4.111
Z_min/Location 63.782/25.5°Lat 24.1333°Lon
Z_max/Location 85.474/ 16.6333°Lat 21.9667°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)
Al Kufra Basin location map
Statistics - Topography (ETOPO2)
Median 582.000
Mean 597.466
Scale 140.847
stdev 177.933
Z_min/Location 106.000/26.0°Lat 25.1°Lon
Z_max/Location 1805.000/ 15.3333°Lat 26.5333°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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Base hard sediments
Al Kufra Basin location map
Statistics - Base hard sediments
Median -0.233
Mean -0.253
Scale 0.880
stdev 0.784
Z_min/Location -1.819/22.7333°Lat 23.0333°Lon
Z_max/Location 1.124/ 14.7667°Lat 25.8333°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
Al Kufra Basin location map
Statistics - Temperature at 50km depth
Median 602.635
Mean 611.716
Scale 22.330
stdev 31.176
Z_min/Location 547.000/22.0°Lat 24.0°Lon
Z_max/Location 709.000/ 17.0°Lat 22.0°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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Laske sediment thickness
Al Kufra Basin location map
Statistics - Laske sediment thickness
Median 0.818
Mean 1.039
Scale 0.607
stdev 0.644
Z_min/Location -0.076/13.4667°Lat 26.1667°Lon
Z_max/Location 2.473/ 25.9667°Lat 25.1333°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
Al Kufra Basin location map
Statistics - Lithospheric temperature gradient
Median 5.913
Mean 5.989
Scale 0.380
stdev 0.372
Z_min/Location 5.205/22.0°Lat 24.0°Lon
Z_max/Location 7.393/ 17.0°Lat 22.0°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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Computations

Isostatic correction
Al Kufra Basin location map
Statistics - Isostatic correction
Median 0.348
Mean 0.436
Scale 0.253
stdev 0.264
Z_min/Location 0.000/16.0°Lat 23.4333°Lon
Z_max/Location 1.010/25.9667°Lat 25.1333°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)
Al Kufra Basin location map
Statistics - TTS (sediment)
Median -0.307
Mean -0.182
Scale 0.719
stdev 0.613
Z_min/Location -1.209/16.0°Lat 25.9333°Lon
Z_max/Location 1.150/23.1667°Lat 23.8333°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)
Al Kufra Basin location map
Statistics - Beta (Sediment)
Median 0.962
Mean 0.983
Scale 0.084
stdev 0.078
Z_min/Location 0.866/16.0°Lat 25.9333°Lon
Z_max/Location 1.172/23.1667°Lat 23.8333°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.
Al Kufra Basin location map
Statistics - Crustal vs lithosph. extn.
Median 0.018
Mean 0.011
Scale 0.067
stdev 0.077
Z_min/Location -0.236/17.0333°Lat 21.1333°Lon
Z_max/Location 0.176/22.0°Lat 24.0°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
Al Kufra Basin location map
Statistics - Anomalous TTS
Median -0.227
Mean -0.211
Scale 0.945
stdev 0.739
Z_min/Location -2.004/15.4°Lat 26.0°Lon
Z_max/Location 1.030/23.1333°Lat 23.9333°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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Predicted elevation
Al Kufra Basin location map
Statistics - Predicted elevation
Median 719.500
Mean 738.694
Scale 173.373
stdev 200.330
Z_min/Location 252.710/22.0°Lat 24.0°Lon
Z_max/Location 1312.760/26.2°Lat 24.6333°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)
Al Kufra Basin location map
Statistics - Beta (Crust)
Median 1.013
Mean 1.006
Scale 0.036
stdev 0.044
Z_min/Location 0.901/18.6667°Lat 26.6333°Lon
Z_max/Location 1.116/15.3°Lat 26.2°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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TTS (crust)
Al Kufra Basin location map
Statistics - TTS (crust)
Median 0.100
Mean 0.028
Scale 0.269
stdev 0.343
Z_min/Location -0.861/18.6667°Lat 26.6333°Lon
Z_max/Location 0.816/15.3°Lat 26.2°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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Differential Beta
Al Kufra Basin location map
Statistics - Differential Beta
Median -0.027
Mean -0.022
Scale 0.117
stdev 0.095
Z_min/Location -0.248/15.4°Lat 26.0333°Lon
Z_max/Location 0.156/23.1333°Lat 23.9°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