ICONS atlas: SIB - Tunguska Basin

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Overview

This page bundles the available data for the Tunguska Basin 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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Tunguska Basin location map
Basin name Tunguska Basin
Region code SIB
Basin ID 4050
Plate location/code /
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.

Tunguska Basin cross section
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Dynamic topography evolution for basin centroid
Tunguska 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
Tunguska Basin location map
Statistics - Mantle Lid thickness
Median 128.076
Mean 136.188
Scale 8.255
stdev 25.182
Z_min/Location 113.000/68.0°Lat 99.0°Lon
Z_max/Location 272.906/ 65.0°Lat 89.0°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
Tunguska Basin location map
Statistics - Depth of 550 deg isotherm
Median -46.351
Mean -48.565
Scale 1.247
stdev 6.473
Z_min/Location -91.000/65.0°Lat 89.0°Lon
Z_max/Location -44.073/ 70.0°Lat 88.0333°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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Mobil isopachs
Tunguska Basin location map
Statistics - Mobil isopachs
Median 5.647
Mean 5.656
Scale 0.792
stdev 0.851
Z_min/Location 2.664/63.5°Lat 88.2667°Lon
Z_max/Location 8.415/ 70.1°Lat 88.2°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
Tunguska Basin location map
Statistics - Plain crustal thickness
Median 38.198
Mean 38.823
Scale 2.818
stdev 2.422
Z_min/Location 33.685/70.6333°Lat 92.4333°Lon
Z_max/Location 45.005/ 62.0°Lat 91.9667°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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Base middle crust
Tunguska Basin location map
Statistics - Base middle crust
Median -29.062
Mean -30.206
Scale 2.618
stdev 3.047
Z_min/Location -36.200/64.0°Lat 93.2333°Lon
Z_max/Location -26.365/ 70.8°Lat 98.5°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
Tunguska Basin location map
Statistics - Base lower crust
Median -41.557
Mean -42.413
Scale 2.014
stdev 2.222
Z_min/Location -47.136/66.1667°Lat 106.367°Lon
Z_max/Location -38.561/ 70.8°Lat 98.5°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
Tunguska Basin location map
Statistics - Total crustal thickness
Median 42.010
Mean 42.881
Scale 1.975
stdev 2.206
Z_min/Location 39.177/70.8°Lat 98.5°Lon
Z_max/Location 47.658/ 66.2°Lat 106.333°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
Tunguska Basin location map
Statistics - Base upper crust
Median -15.695
Mean -16.378
Scale 1.776
stdev 1.866
Z_min/Location -19.990/64.0667°Lat 93.1667°Lon
Z_max/Location -14.130/ 65.4°Lat 103.333°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
Tunguska Basin location map
Statistics - Thermal lithospheric thickness
Median 170.390
Mean 179.069
Scale 7.361
stdev 25.078
Z_min/Location 159.445/70.0°Lat 88.0333°Lon
Z_max/Location 315.000/ 65.0°Lat 89.0°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
Tunguska Basin location map
Statistics - Heatflow
Median 45.399
Mean 45.732
Scale 2.181
stdev 2.188
Z_min/Location 42.020/65.9333°Lat 102.267°Lon
Z_max/Location 53.423/ 70.1333°Lat 88.2667°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)
Tunguska Basin location map
Statistics - Topography (ETOPO2)
Median 461.000
Mean 504.782
Scale 197.186
stdev 240.087
Z_min/Location 12.000/70.6667°Lat 94.5°Lon
Z_max/Location 1633.000/ 69.1333°Lat 95.3°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 hard sediments
Tunguska Basin location map
Statistics - Base hard sediments
Median -3.768
Mean -3.590
Scale 0.899
stdev 0.931
Z_min/Location -6.289/70.6°Lat 91.4°Lon
Z_max/Location -0.418/ 61.2°Lat 92.4333°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
Tunguska Basin location map
Statistics - Temperature at 50km depth
Median 598.273
Mean 586.636
Scale 15.720
stdev 35.394
Z_min/Location 409.000/65.0°Lat 89.0°Lon
Z_max/Location 631.779/ 70.0°Lat 88.0333°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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Laske sediment thickness
Tunguska Basin location map
Statistics - Laske sediment thickness
Median 4.428
Mean 4.440
Scale 0.584
stdev 0.695
Z_min/Location 0.464/61.2°Lat 92.3667°Lon
Z_max/Location 6.973/ 70.0°Lat 88.0333°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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Lithospheric temperature gradient
Tunguska Basin location map
Statistics - Lithospheric temperature gradient
Median 5.827
Mean 5.635
Scale 0.213
stdev 0.527
Z_min/Location 3.501/65.0°Lat 89.0°Lon
Z_max/Location 6.388/ 70.0°Lat 88.0333°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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Computations

Isostatic correction
Tunguska Basin location map
Statistics - Isostatic correction
Median 1.719
Mean 1.718
Scale 0.201
stdev 0.245
Z_min/Location 0.199/61.2°Lat 92.3667°Lon
Z_max/Location 2.522/70.0°Lat 88.0333°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)
Tunguska Basin location map
Statistics - TTS (sediment)
Median 1.998
Mean 1.872
Scale 0.722
stdev 0.769
Z_min/Location -0.584/61.9333°Lat 92.6333°Lon
Z_max/Location 4.237/70.6333°Lat 92.2°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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Beta (Sediment)
Tunguska Basin location map
Statistics - Beta (Sediment)
Median 1.343
Mean 1.337
Scale 0.163
stdev 0.172
Z_min/Location 0.930/61.9333°Lat 92.6333°Lon
Z_max/Location 2.182/70.6333°Lat 92.2°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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Crustal vs lithosph. extn.
Tunguska Basin location map
Statistics - Crustal vs lithosph. extn.
Median -0.007
Mean -0.003
Scale 0.094
stdev 0.109
Z_min/Location -0.222/68.0°Lat 99.0°Lon
Z_max/Location 0.411/65.0°Lat 89.0°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
Tunguska Basin location map
Statistics - Anomalous TTS
Median 1.683
Mean 1.799
Scale 0.653
stdev 0.726
Z_min/Location -0.050/67.5667°Lat 88.3333°Lon
Z_max/Location 3.675/70.4°Lat 89.9333°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
Tunguska Basin location map
Statistics - Predicted elevation
Median 761.747
Mean 661.205
Scale 229.232
stdev 455.767
Z_min/Location -1928.510/65.0°Lat 89.0°Lon
Z_max/Location 1178.830/68.0°Lat 99.0°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)
Tunguska Basin location map
Statistics - Beta (Crust)
Median 1.026
Mean 1.013
Scale 0.077
stdev 0.062
Z_min/Location 0.871/62.0°Lat 91.9667°Lon
Z_max/Location 1.163/70.6333°Lat 92.4333°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)
Tunguska Basin location map
Statistics - TTS (crust)
Median 0.198
Mean 0.073
Scale 0.562
stdev 0.483
Z_min/Location -1.161/62.0°Lat 91.9667°Lon
Z_max/Location 1.098/70.6333°Lat 92.4333°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
Tunguska Basin location map
Statistics - Differential Beta
Median 0.297
Mean 0.323
Scale 0.132
stdev 0.160
Z_min/Location -0.006/67.5667°Lat 88.3333°Lon
Z_max/Location 1.045/70.6°Lat 91.4°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