ICONS atlas: CAS - Amu-Darya Basin

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Overview

This page bundles the available data for the Amu-Darya Basin in the Greater Caspian Region. 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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Amu-Darya Basin location map
Basin name Amu-Darya Basin
Region code CAS
Basin ID 3770
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.

Amu-Darya Basin cross section
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Dynamic topography evolution for basin centroid
Amu-Darya 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
Amu-Darya Basin location map
Statistics - Mantle Lid thickness
Median 49.817
Mean 50.778
Scale 3.306
stdev 4.244
Z_min/Location 44.000/38.0°Lat 60.0°Lon
Z_max/Location 66.936/ 41.4667°Lat 61.1333°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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Depth of 550 deg isotherm
Amu-Darya Basin location map
Statistics - Depth of 550 deg isotherm
Median -32.000
Mean -32.121
Scale 0.135
stdev 0.615
Z_min/Location -35.000/41.0°Lat 62.0°Lon
Z_max/Location -31.000/ 40.0°Lat 54.0°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
Amu-Darya Basin location map
Statistics - Mobil isopachs
Median 2.879
Mean 2.823
Scale 0.903
stdev 1.552
Z_min/Location -0.193/40.0333°Lat 66.2333°Lon
Z_max/Location 11.740/ 36.9333°Lat 64.9667°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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Plain crustal thickness
Amu-Darya Basin location map
Statistics - Plain crustal thickness
Median 40.749
Mean 40.340
Scale 3.570
stdev 3.159
Z_min/Location 21.041/40.0667°Lat 53.5333°Lon
Z_max/Location 45.445/ 37.5333°Lat 60.0667°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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Base middle crust
Amu-Darya Basin location map
Statistics - Base middle crust
Median -34.198
Mean -33.525
Scale 2.028
stdev 2.124
Z_min/Location -37.610/38.1333°Lat 65.6°Lon
Z_max/Location -25.875/ 40.0333°Lat 53.6667°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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Base lower crust
Amu-Darya Basin location map
Statistics - Base lower crust
Median -43.443
Mean -42.874
Scale 2.649
stdev 2.290
Z_min/Location -46.172/39.3°Lat 64.0°Lon
Z_max/Location -35.406/ 40.0667°Lat 53.5333°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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Total crustal thickness
Amu-Darya Basin location map
Statistics - Total crustal thickness
Median 44.302
Mean 43.562
Scale 2.392
stdev 2.313
Z_min/Location 35.354/40.0667°Lat 53.5333°Lon
Z_max/Location 46.549/ 37.6667°Lat 60.7°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
Amu-Darya Basin location map
Statistics - Base upper crust
Median -18.235
Mean -18.219
Scale 1.256
stdev 1.332
Z_min/Location -21.511/38.2333°Lat 65.7333°Lon
Z_max/Location -13.536/ 35.2667°Lat 66.3333°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
Amu-Darya Basin location map
Statistics - Thermal lithospheric thickness
Median 94.586
Mean 94.339
Scale 2.418
stdev 3.032
Z_min/Location 90.000/38.0°Lat 60.0°Lon
Z_max/Location 106.270/ 41.4667°Lat 61.3°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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Heatflow
Amu-Darya Basin location map
Statistics - Heatflow
Median 60.223
Mean 62.140
Scale 5.103
stdev 6.023
Z_min/Location 52.879/37.2°Lat 66.0333°Lon
Z_max/Location 81.859/ 34.6667°Lat 60.7333°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)
Amu-Darya Basin location map
Statistics - Topography (ETOPO2)
Median 206.000
Mean 377.676
Scale 127.504
stdev 455.709
Z_min/Location -78.000/41.1°Lat 58.2°Lon
Z_max/Location 3657.000/ 35.3667°Lat 66.1°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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Base hard sediments
Amu-Darya Basin location map
Statistics - Base hard sediments
Median -2.838
Mean -2.534
Scale 2.816
stdev 2.263
Z_min/Location -14.365/40.0667°Lat 53.5333°Lon
Z_max/Location 2.086/ 35.3667°Lat 66.4667°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
Amu-Darya Basin location map
Statistics - Temperature at 50km depth
Median 864.764
Mean 866.230
Scale 13.151
stdev 16.081
Z_min/Location 803.935/41.4667°Lat 61.3°Lon
Z_max/Location 890.000/ 38.0°Lat 59.0°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
Amu-Darya Basin location map
Statistics - Laske sediment thickness
Median 3.829
Mean 3.471
Scale 2.061
stdev 1.909
Z_min/Location -0.212/37.7667°Lat 58.6°Lon
Z_max/Location 12.423/ 39.9667°Lat 53.8333°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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Lithospheric temperature gradient
Amu-Darya Basin location map
Statistics - Lithospheric temperature gradient
Median 9.803
Mean 9.792
Scale 0.251
stdev 0.281
Z_min/Location 9.020/40.0°Lat 62.0°Lon
Z_max/Location 10.239/ 40.0°Lat 54.0°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
Amu-Darya Basin location map
Statistics - Isostatic correction
Median 1.510
Mean 1.344
Scale 0.723
stdev 0.697
Z_min/Location 0.000/37.9333°Lat 58.3333°Lon
Z_max/Location 3.790/39.9667°Lat 53.8333°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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TTS (sediment)
Amu-Darya Basin location map
Statistics - TTS (sediment)
Median 1.365
Mean 1.189
Scale 2.574
stdev 1.836
Z_min/Location -2.261/35.3667°Lat 66.4667°Lon
Z_max/Location 10.758/40.0667°Lat 53.5333°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)
Amu-Darya Basin location map
Statistics - Beta (Sediment)
Median 1.208
Mean 1.277
Scale 0.432
stdev 3.601
Z_min/Location -297.595/40.0°Lat 54.6°Lon
Z_max/Location 398.149/39.9°Lat 54.6333°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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Crustal vs lithosph. extn.
Amu-Darya Basin location map
Statistics - Crustal vs lithosph. extn.
Median -0.004
Mean 0.007
Scale 0.097
stdev 0.103
Z_min/Location -0.155/37.5333°Lat 59.9667°Lon
Z_max/Location 0.865/40.0667°Lat 53.5333°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
Amu-Darya Basin location map
Statistics - Anomalous TTS
Median 1.243
Mean 1.291
Scale 1.736
stdev 1.445
Z_min/Location -2.238/35.3667°Lat 66.4667°Lon
Z_max/Location 7.070/40.0667°Lat 53.5333°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
Amu-Darya Basin location map
Statistics - Predicted elevation
Median 2093.270
Mean 2044.530
Scale 89.234
stdev 122.952
Z_min/Location 1606.110/40.0667°Lat 53.5333°Lon
Z_max/Location 2204.430/37.6°Lat 60.3°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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Beta (Crust)
Amu-Darya Basin location map
Statistics - Beta (Crust)
Median 0.977
Mean 0.994
Scale 0.085
stdev 0.087
Z_min/Location 0.876/37.5333°Lat 60.0667°Lon
Z_max/Location 1.893/40.0667°Lat 53.5333°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)
Amu-Darya Basin location map
Statistics - TTS (crust)
Median -0.182
Mean -0.102
Scale 0.701
stdev 0.620
Z_min/Location -1.104/37.5333°Lat 60.0667°Lon
Z_max/Location 3.688/40.0667°Lat 53.5333°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
Amu-Darya Basin location map
Statistics - Differential Beta
Median 0.185
Mean 0.283
Scale 0.311
stdev 3.596
Z_min/Location -299.103/40.0°Lat 54.6°Lon
Z_max/Location 396.642/39.9°Lat 54.6333°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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This basin data is based on interpolated global grids and might contain gridding errors or wrongly interpolated data values.

Page generated 2008-08-03 02:36:42 CEST | © Christian Heine, School of Geosciences, Sydney University, Australia