ICONS atlas: CAS - Precaspian Basin

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Overview

This page bundles the available data for the Precaspian 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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Precaspian Basin location map
Basin name Precaspian Basin
Region code CAS
Basin ID 3810
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.

Precaspian Basin cross section
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Dynamic topography evolution for basin centroid
Precaspian 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
Precaspian Basin location map
Statistics - Mantle Lid thickness
Median 66.395
Mean 70.559
Scale 27.681
stdev 26.131
Z_min/Location 30.000/48.0°Lat 50.0°Lon
Z_max/Location 152.288/ 52.6667°Lat 56.7°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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Depth of 550 deg isotherm
Precaspian Basin location map
Statistics - Depth of 550 deg isotherm
Median -33.690
Mean -34.664
Scale 5.001
stdev 4.969
Z_min/Location -50.215/52.6667°Lat 56.7°Lon
Z_max/Location -27.000/ 49.0°Lat 52.0°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
Precaspian Basin location map
Statistics - Mobil isopachs
Median 10.756
Mean 10.950
Scale 2.084
stdev 2.582
Z_min/Location 2.886/47.6°Lat 43.6333°Lon
Z_max/Location 16.450/ 49.8°Lat 47.9°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
Precaspian Basin location map
Statistics - Plain crustal thickness
Median 29.452
Mean 27.792
Scale 7.795
stdev 6.810
Z_min/Location 15.087/50.0667°Lat 50.8°Lon
Z_max/Location 40.012/ 47.5333°Lat 43.7667°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
Precaspian Basin location map
Statistics - Base middle crust
Median -27.872
Mean -28.261
Scale 2.195
stdev 2.117
Z_min/Location -33.997/47.0333°Lat 45.2°Lon
Z_max/Location -24.036/ 51.2667°Lat 48.4°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
Precaspian Basin location map
Statistics - Base lower crust
Median -38.407
Mean -37.948
Scale 2.954
stdev 2.386
Z_min/Location -42.319/47.3333°Lat 44.2333°Lon
Z_max/Location -33.025/ 51.3°Lat 48.6667°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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Total crustal thickness
Precaspian Basin location map
Statistics - Total crustal thickness
Median 38.459
Mean 37.981
Scale 2.947
stdev 2.394
Z_min/Location 33.047/51.3°Lat 48.6667°Lon
Z_max/Location 42.430/ 47.3333°Lat 44.2333°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
Precaspian Basin location map
Statistics - Base upper crust
Median -17.273
Mean -17.282
Scale 2.203
stdev 2.260
Z_min/Location -22.890/50.0667°Lat 50.8333°Lon
Z_max/Location -13.018/ 47.8667°Lat 48.7667°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
Precaspian Basin location map
Statistics - Thermal lithospheric thickness
Median 103.437
Mean 108.539
Scale 25.467
stdev 26.145
Z_min/Location 70.000/49.0°Lat 53.0°Lon
Z_max/Location 190.970/ 52.6667°Lat 56.7°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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Heatflow
Precaspian Basin location map
Statistics - Heatflow
Median 46.308
Mean 46.899
Scale 1.004
stdev 1.976
Z_min/Location 44.279/48.2667°Lat 46.2°Lon
Z_max/Location 55.835/ 46.1°Lat 47.0333°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)
Precaspian Basin location map
Statistics - Topography (ETOPO2)
Median 18.000
Mean 53.881
Scale 53.374
stdev 90.157
Z_min/Location -68.000/45.7333°Lat 55.0667°Lon
Z_max/Location 510.000/ 52.4667°Lat 56.6667°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 hard sediments
Precaspian Basin location map
Statistics - Base hard sediments
Median -9.400
Mean -10.155
Scale 5.302
stdev 4.678
Z_min/Location -19.883/49.9667°Lat 50.8667°Lon
Z_max/Location -1.629/ 47.7°Lat 43.6333°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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Temperature at 50km depth
Precaspian Basin location map
Statistics - Temperature at 50km depth
Median 828.459
Mean 824.143
Scale 127.019
stdev 113.238
Z_min/Location 557.222/52.6667°Lat 56.7°Lon
Z_max/Location 1052.000/ 49.0°Lat 51.0°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
Precaspian Basin location map
Statistics - Laske sediment thickness
Median 10.326
Mean 10.959
Scale 4.647
stdev 4.758
Z_min/Location 1.046/46.9°Lat 45.5333°Lon
Z_max/Location 21.497/ 49.8°Lat 49.4333°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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Lithospheric temperature gradient
Precaspian Basin location map
Statistics - Lithospheric temperature gradient
Median 8.896
Mean 9.199
Scale 2.017
stdev 2.142
Z_min/Location 5.298/52.6667°Lat 56.7°Lon
Z_max/Location 15.900/ 49.0°Lat 53.0°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
Precaspian Basin location map
Statistics - Isostatic correction
Median 3.375
Mean 3.275
Scale 0.992
stdev 0.948
Z_min/Location 0.443/46.9°Lat 45.5333°Lon
Z_max/Location 4.535/50.0333°Lat 50.9667°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)
Precaspian Basin location map
Statistics - TTS (sediment)
Median 6.010
Mean 6.880
Scale 4.096
stdev 3.907
Z_min/Location 0.259/48.0667°Lat 44.7°Lon
Z_max/Location 15.349/49.9667°Lat 50.8667°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)
Precaspian Basin location map
Statistics - Beta (Sediment)
Median 1.481
Mean -1.994
Scale 3.801
stdev 589.205
Z_min/Location -133153.000/49.7333°Lat 46.9667°Lon
Z_max/Location 15073.900/50.8667°Lat 55.4667°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.
Precaspian Basin location map
Statistics - Crustal vs lithosph. extn.
Median -0.051
Mean -0.037
Scale 0.526
stdev 0.441
Z_min/Location -0.875/48.0°Lat 50.0°Lon
Z_max/Location 0.809/50.2667°Lat 49.3667°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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Anomalous TTS
Precaspian Basin location map
Statistics - Anomalous TTS
Median 4.969
Mean 5.422
Scale 2.441
stdev 2.389
Z_min/Location 1.064/48.1°Lat 44.8°Lon
Z_max/Location 11.003/49.9333°Lat 50.8333°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
Precaspian Basin location map
Statistics - Predicted elevation
Median 1577.550
Mean 1516.000
Scale 450.180
stdev 428.339
Z_min/Location 186.838/52.6667°Lat 56.6667°Lon
Z_max/Location 2170.450/48.0°Lat 50.0°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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Beta (Crust)
Precaspian Basin location map
Statistics - Beta (Crust)
Median 1.160
Mean 1.319
Scale 0.288
stdev 0.376
Z_min/Location 0.854/47.5333°Lat 43.7667°Lon
Z_max/Location 2.264/50.0667°Lat 50.8°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)
Precaspian Basin location map
Statistics - TTS (crust)
Median 1.078
Mean 1.458
Scale 1.784
stdev 1.559
Z_min/Location -1.339/47.5333°Lat 43.7667°Lon
Z_max/Location 4.366/50.0667°Lat 50.8°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
Precaspian Basin location map
Statistics - Differential Beta
Median 0.525
Mean -3.313
Scale 3.922
stdev 589.206
Z_min/Location -133154.000/49.7333°Lat 46.9667°Lon
Z_max/Location 15072.500/50.8667°Lat 55.4667°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