ICONS atlas: SIB - Lena-Anabar Trough

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Overview

This page bundles the available data for the Lena-Anabar Trough in the Siberian 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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Lena-Anabar Trough location map
Basin name Lena-Anabar Trough
Region code SIB
Basin ID 4060
Plate location/code compress foreland/CMF
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.

Lena-Anabar Trough cross section
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Dynamic topography evolution for basin centroid
Lena-Anabar Trough 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
Lena-Anabar Trough location map
Statistics - Mantle Lid thickness
Median 116.006
Mean 109.512
Scale 17.366
stdev 19.033
Z_min/Location 68.754/75.0°Lat 105.0°Lon
Z_max/Location 153.660/ 72.2667°Lat 106.467°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
Lena-Anabar Trough location map
Statistics - Depth of 550 deg isotherm
Median -43.494
Mean -42.523
Scale 3.464
stdev 3.372
Z_min/Location -49.821/72.3°Lat 106.633°Lon
Z_max/Location -36.000/ 75.0°Lat 105.0°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
Lena-Anabar Trough location map
Statistics - Mobil isopachs
Median 6.311
Mean 6.670
Scale 3.371
stdev 3.015
Z_min/Location -1.164/75.1667°Lat 105.467°Lon
Z_max/Location 12.607/ 73.3667°Lat 106.133°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
Lena-Anabar Trough location map
Statistics - Plain crustal thickness
Median 35.718
Mean 35.375
Scale 1.952
stdev 2.122
Z_min/Location 30.905/73.9°Lat 105.1°Lon
Z_max/Location 39.667/ 72.4333°Lat 125.3°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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Base middle crust
Lena-Anabar Trough location map
Statistics - Base middle crust
Median -32.067
Mean -31.724
Scale 0.683
stdev 1.350
Z_min/Location -33.141/74.8667°Lat 106.933°Lon
Z_max/Location -25.983/ 72.4°Lat 116.033°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
Lena-Anabar Trough location map
Statistics - Base lower crust
Median -40.828
Mean -40.514
Scale 0.273
stdev 0.949
Z_min/Location -41.885/75.2667°Lat 114.167°Lon
Z_max/Location -36.238/ 73.0°Lat 120.1°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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Total crustal thickness
Lena-Anabar Trough location map
Statistics - Total crustal thickness
Median 40.962
Mean 40.626
Scale 0.230
stdev 0.956
Z_min/Location 36.306/73.0°Lat 120.1°Lon
Z_max/Location 41.909/ 75.2667°Lat 114.167°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
Lena-Anabar Trough location map
Statistics - Base upper crust
Median -18.721
Mean -18.315
Scale 1.161
stdev 1.250
Z_min/Location -20.010/74.1°Lat 107.433°Lon
Z_max/Location -14.804/ 72.4°Lat 116.0°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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Thermal lithospheric thickness
Lena-Anabar Trough location map
Statistics - Thermal lithospheric thickness
Median 156.994
Mean 150.138
Scale 15.864
stdev 18.603
Z_min/Location 110.000/75.0°Lat 105.0°Lon
Z_max/Location 194.446/ 72.2667°Lat 106.467°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
Lena-Anabar Trough location map
Statistics - Heatflow
Median 55.699
Mean 55.672
Scale 2.549
stdev 2.124
Z_min/Location 50.417/74.2333°Lat 103.767°Lon
Z_max/Location 59.263/ 72.3667°Lat 120.1°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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Topography (ETOPO2)
Lena-Anabar Trough location map
Statistics - Topography (ETOPO2)
Median 45.000
Mean 61.909
Scale 53.374
stdev 72.244
Z_min/Location -39.000/75.0333°Lat 114.267°Lon
Z_max/Location 628.000/ 74.8667°Lat 107.733°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
Lena-Anabar Trough location map
Statistics - Base hard sediments
Median -4.829
Mean -5.138
Scale 2.512
stdev 2.323
Z_min/Location -10.025/73.9333°Lat 105.2°Lon
Z_max/Location -1.433/ 72.4°Lat 125.533°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
Lena-Anabar Trough location map
Statistics - Temperature at 50km depth
Median 643.395
Mean 662.051
Scale 53.187
stdev 56.453
Z_min/Location 581.026/72.3°Lat 106.633°Lon
Z_max/Location 785.000/ 75.0°Lat 105.0°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
Lena-Anabar Trough location map
Statistics - Laske sediment thickness
Median 5.965
Mean 6.091
Scale 2.920
stdev 2.394
Z_min/Location 1.806/71.8°Lat 124.867°Lon
Z_max/Location 10.722/ 73.5°Lat 104.933°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
Lena-Anabar Trough location map
Statistics - Lithospheric temperature gradient
Median 6.385
Mean 6.564
Scale 0.598
stdev 0.676
Z_min/Location 5.124/72.1667°Lat 106.033°Lon
Z_max/Location 8.581/ 75.0°Lat 105.0°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
Lena-Anabar Trough location map
Statistics - Isostatic correction
Median 2.220
Mean 2.200
Scale 0.926
stdev 0.726
Z_min/Location 0.750/71.8°Lat 124.867°Lon
Z_max/Location 3.461/73.5°Lat 104.933°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)
Lena-Anabar Trough location map
Statistics - TTS (sediment)
Median 2.508
Mean 2.938
Scale 1.497
stdev 1.700
Z_min/Location 0.460/72.0333°Lat 121.967°Lon
Z_max/Location 6.733/74.0°Lat 104.133°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)
Lena-Anabar Trough location map
Statistics - Beta (Sediment)
Median 1.472
Mean 2.003
Scale 0.384
stdev 1.287
Z_min/Location 1.062/72.0333°Lat 121.967°Lon
Z_max/Location 7.197/74.0°Lat 104.133°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.
Lena-Anabar Trough location map
Statistics - Crustal vs lithosph. extn.
Median -0.014
Mean -0.050
Scale 0.087
stdev 0.117
Z_min/Location -0.418/75.0°Lat 105.0°Lon
Z_max/Location 0.154/72.2667°Lat 106.467°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
Lena-Anabar Trough location map
Statistics - Anomalous TTS
Median 2.202
Mean 2.481
Scale 1.286
stdev 1.316
Z_min/Location 0.021/72.9667°Lat 120.367°Lon
Z_max/Location 5.375/74.1°Lat 103.933°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
Lena-Anabar Trough location map
Statistics - Predicted elevation
Median 969.515
Mean 1048.920
Scale 369.281
stdev 345.817
Z_min/Location 351.863/72.3°Lat 106.633°Lon
Z_max/Location 1720.980/75.0°Lat 105.0°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)
Lena-Anabar Trough location map
Statistics - Beta (Crust)
Median 1.052
Mean 1.066
Scale 0.057
stdev 0.066
Z_min/Location 0.947/72.4333°Lat 125.3°Lon
Z_max/Location 1.216/73.9°Lat 105.1°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)
Lena-Anabar Trough location map
Statistics - TTS (crust)
Median 0.386
Mean 0.457
Scale 0.406
stdev 0.442
Z_min/Location -0.436/72.4333°Lat 125.3°Lon
Z_max/Location 1.387/73.9°Lat 105.1°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
Lena-Anabar Trough location map
Statistics - Differential Beta
Median 0.431
Mean 0.937
Scale 0.353
stdev 1.232
Z_min/Location 0.003/72.9667°Lat 120.367°Lon
Z_max/Location 5.985/74.0°Lat 104.133°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 02:36:55 CEST | © Christian Heine, School of Geosciences, Sydney University, Australia