ICONS atlas: SIB - Angara-Lena Structural Terrace

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Overview

This page bundles the available data for the Angara-Lena Structural Terrace 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.

Select data to display:
Angara-Lena Structural Terrace location map
Basin name Angara-Lena Structural Terrace
Region code SIB
Basin ID 4110
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.

Angara-Lena Structural Terrace cross section
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Dynamic topography evolution for basin centroid
Angara-Lena Structural Terrace 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
Angara-Lena Structural Terrace location map
Statistics - Mantle Lid thickness
Median 159.082
Mean 155.019
Scale 17.093
stdev 22.612
Z_min/Location 79.515/51.9333°Lat 104.033°Lon
Z_max/Location 207.431/ 56.1333°Lat 105.967°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
Angara-Lena Structural Terrace location map
Statistics - Depth of 550 deg isotherm
Median -52.638
Mean -51.834
Scale 5.258
stdev 6.700
Z_min/Location -68.678/56.1333°Lat 106.0°Lon
Z_max/Location -33.949/ 51.9333°Lat 104.033°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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Mobil isopachs
Angara-Lena Structural Terrace location map
Statistics - Mobil isopachs
Median 3.252
Mean 2.793
Scale 0.606
stdev 1.121
Z_min/Location -0.866/52.6667°Lat 101.833°Lon
Z_max/Location 6.142/ 57.5°Lat 100.867°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
Angara-Lena Structural Terrace location map
Statistics - Plain crustal thickness
Median 39.094
Mean 39.729
Scale 1.993
stdev 2.700
Z_min/Location 33.199/52.4333°Lat 105.567°Lon
Z_max/Location 47.346/ 55.1°Lat 98.3667°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
Angara-Lena Structural Terrace location map
Statistics - Base middle crust
Median -27.532
Mean -27.346
Scale 1.079
stdev 1.474
Z_min/Location -30.963/55.6333°Lat 97.4°Lon
Z_max/Location -22.370/ 52.3667°Lat 105.467°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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Base lower crust
Angara-Lena Structural Terrace location map
Statistics - Base lower crust
Median -40.556
Mean -40.657
Scale 1.727
stdev 2.221
Z_min/Location -46.858/55.2667°Lat 98.1333°Lon
Z_max/Location -33.006/ 52.4333°Lat 105.567°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
Angara-Lena Structural Terrace location map
Statistics - Total crustal thickness
Median 41.152
Mean 41.543
Scale 1.640
stdev 2.326
Z_min/Location 34.019/52.4333°Lat 105.567°Lon
Z_max/Location 47.988/ 55.2667°Lat 98.1333°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 upper crust
Angara-Lena Structural Terrace location map
Statistics - Base upper crust
Median -14.250
Mean -14.013
Scale 0.666
stdev 1.048
Z_min/Location -18.246/57.5°Lat 100.867°Lon
Z_max/Location -11.358/ 52.1667°Lat 102.967°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
Angara-Lena Structural Terrace location map
Statistics - Thermal lithospheric thickness
Median 201.772
Mean 196.562
Scale 14.916
stdev 23.576
Z_min/Location 118.398/51.9333°Lat 104.533°Lon
Z_max/Location 248.348/ 56.1333°Lat 105.967°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
Angara-Lena Structural Terrace location map
Statistics - Heatflow
Median 67.114
Mean 66.812
Scale 7.126
stdev 5.914
Z_min/Location 53.442/57.4667°Lat 101.567°Lon
Z_max/Location 76.946/ 53.9°Lat 103.967°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)
Angara-Lena Structural Terrace location map
Statistics - Topography (ETOPO2)
Median 581.000
Mean 635.246
Scale 164.569
stdev 189.689
Z_min/Location 251.000/57.0°Lat 102.3°Lon
Z_max/Location 1788.000/ 55.1333°Lat 108.633°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
Angara-Lena Structural Terrace location map
Statistics - Base hard sediments
Median -1.244
Mean -0.929
Scale 0.974
stdev 1.259
Z_min/Location -5.387/57.5°Lat 100.867°Lon
Z_max/Location 1.957/ 53.8333°Lat 100.0°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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Temperature at 50km depth
Angara-Lena Structural Terrace location map
Statistics - Temperature at 50km depth
Median 544.942
Mean 568.985
Scale 35.498
stdev 70.210
Z_min/Location 471.462/56.1333°Lat 105.967°Lon
Z_max/Location 824.704/ 52.0667°Lat 104.867°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
Angara-Lena Structural Terrace location map
Statistics - Laske sediment thickness
Median 2.486
Mean 2.096
Scale 0.591
stdev 1.042
Z_min/Location -0.163/53.7333°Lat 100.233°Lon
Z_max/Location 5.505/ 57.5°Lat 100.867°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
Angara-Lena Structural Terrace location map
Statistics - Lithospheric temperature gradient
Median 5.070
Mean 5.180
Scale 0.401
stdev 0.487
Z_min/Location 4.174/56.0°Lat 106.933°Lon
Z_max/Location 6.910/ 53.0°Lat 106.0°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
Angara-Lena Structural Terrace location map
Statistics - Isostatic correction
Median 1.015
Mean 0.854
Scale 0.226
stdev 0.412
Z_min/Location 0.000/54.8333°Lat 98.6667°Lon
Z_max/Location 2.075/57.5°Lat 100.867°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)
Angara-Lena Structural Terrace location map
Statistics - TTS (sediment)
Median 0.194
Mean 0.075
Scale 0.759
stdev 0.904
Z_min/Location -1.957/53.8333°Lat 100.0°Lon
Z_max/Location 3.312/57.5°Lat 100.867°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)
Angara-Lena Structural Terrace location map
Statistics - Beta (Sediment)
Median 1.026
Mean 1.025
Scale 0.101
stdev 0.137
Z_min/Location 0.800/53.8333°Lat 100.0°Lon
Z_max/Location 1.735/57.5°Lat 100.867°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.
Angara-Lena Structural Terrace location map
Statistics - Crustal vs lithosph. extn.
Median 0.002
Mean -0.016
Scale 0.143
stdev 0.134
Z_min/Location -0.619/51.9333°Lat 104.033°Lon
Z_max/Location 0.221/56.1333°Lat 105.967°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
Angara-Lena Structural Terrace location map
Statistics - Anomalous TTS
Median 0.304
Mean 0.258
Scale 0.492
stdev 0.735
Z_min/Location -1.985/52.3667°Lat 105.467°Lon
Z_max/Location 2.880/57.5°Lat 100.867°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
Angara-Lena Structural Terrace location map
Statistics - Predicted elevation
Median 278.035
Mean 302.855
Scale 414.560
stdev 409.407
Z_min/Location -729.937/56.1333°Lat 105.967°Lon
Z_max/Location 1580.560/51.9333°Lat 104.0°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)
Angara-Lena Structural Terrace location map
Statistics - Beta (Crust)
Median 0.993
Mean 0.981
Scale 0.051
stdev 0.064
Z_min/Location 0.820/55.1°Lat 98.3667°Lon
Z_max/Location 1.169/52.4333°Lat 105.567°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)
Angara-Lena Structural Terrace location map
Statistics - TTS (crust)
Median -0.055
Mean -0.183
Scale 0.402
stdev 0.544
Z_min/Location -1.718/55.1°Lat 98.3667°Lon
Z_max/Location 1.132/52.4333°Lat 105.567°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
Angara-Lena Structural Terrace location map
Statistics - Differential Beta
Median 0.039
Mean 0.044
Scale 0.062
stdev 0.118
Z_min/Location -0.266/52.3667°Lat 105.467°Lon
Z_max/Location 0.676/57.5°Lat 100.867°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