ICONS atlas: SUN - Sunda Shelf

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Overview

This page bundles the available data for the Sunda Shelf in the Sundaland 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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Sunda Shelf location map
Basin name Sunda Shelf
Region code SUN
Basin ID 6710
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.

Sunda Shelf cross section
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Dynamic topography evolution for basin centroid
Sunda Shelf 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
Sunda Shelf location map
Statistics - Mantle Lid thickness
Median 66.190
Mean 65.959
Scale 0.393
stdev 0.951
Z_min/Location 62.520/-0.766667°Lat 104.933°Lon
Z_max/Location 68.303/ 2.7°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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Depth of 550 deg isotherm
Sunda Shelf location map
Statistics - Depth of 550 deg isotherm
Median -32.017
Mean -32.067
Scale 0.028
stdev 0.122
Z_min/Location -32.613/2.7°Lat 105.467°Lon
Z_max/Location -31.993/ -4.5°Lat 107.667°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
Sunda Shelf location map
Statistics - Mobil isopachs
Median 0.928
Mean 0.905
Scale 0.043
stdev 0.104
Z_min/Location 0.313/2.56667°Lat 108.367°Lon
Z_max/Location 1.104/ 2.1°Lat 107.167°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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Plain crustal thickness
Sunda Shelf location map
Statistics - Plain crustal thickness
Median 27.955
Mean 28.184
Scale 0.232
stdev 0.616
Z_min/Location 27.533/-3.26667°Lat 108.733°Lon
Z_max/Location 30.788/ -3.36667°Lat 106.167°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 middle crust
Sunda Shelf location map
Statistics - Base middle crust
Median -21.013
Mean -21.099
Scale 0.125
stdev 0.319
Z_min/Location -22.825/-0.766667°Lat 104.933°Lon
Z_max/Location -20.793/ -1.3°Lat 106.667°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
Sunda Shelf location map
Statistics - Base lower crust
Median -28.990
Mean -29.251
Scale 0.318
stdev 0.680
Z_min/Location -32.504/-0.766667°Lat 104.933°Lon
Z_max/Location -28.505/ -3.23333°Lat 108.733°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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Total crustal thickness
Sunda Shelf location map
Statistics - Total crustal thickness
Median 28.940
Mean 29.192
Scale 0.261
stdev 0.698
Z_min/Location 28.420/-3.3°Lat 108.733°Lon
Z_max/Location 32.627/ -0.766667°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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Base upper crust
Sunda Shelf location map
Statistics - Base upper crust
Median -11.004
Mean -11.087
Scale 0.102
stdev 0.313
Z_min/Location -12.798/0.133333°Lat 104.733°Lon
Z_max/Location -10.809/ -1.26667°Lat 106.667°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
Sunda Shelf location map
Statistics - Thermal lithospheric thickness
Median 95.064
Mean 95.255
Scale 0.115
stdev 0.467
Z_min/Location 94.960/-4.5°Lat 107.667°Lon
Z_max/Location 97.391/ 2.5°Lat 108.3°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
Sunda Shelf location map
Statistics - Heatflow
Median 85.415
Mean 85.395
Scale 2.244
stdev 3.659
Z_min/Location 73.012/-3.93333°Lat 106.533°Lon
Z_max/Location 94.630/ 2.56667°Lat 108.367°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)
Sunda Shelf location map
Statistics - Topography (ETOPO2)
Median -34.000
Mean -31.902
Scale 14.826
stdev 31.227
Z_min/Location -97.000/2.53333°Lat 106.733°Lon
Z_max/Location 323.000/ -0.433333°Lat 110.133°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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Base hard sediments
Sunda Shelf location map
Statistics - Base hard sediments
Median -1.010
Mean -1.067
Scale 0.058
stdev 0.219
Z_min/Location -2.096/0.133333°Lat 104.733°Lon
Z_max/Location -0.667/ -3.36667°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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Temperature at 50km depth
Sunda Shelf location map
Statistics - Temperature at 50km depth
Median 861.706
Mean 860.840
Scale 0.501
stdev 2.111
Z_min/Location 851.203/2.5°Lat 108.3°Lon
Z_max/Location 862.133/ -4.5°Lat 107.667°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
Sunda Shelf location map
Statistics - Laske sediment thickness
Median 0.668
Mean 0.708
Scale 0.242
stdev 0.217
Z_min/Location 0.145/2.06667°Lat 104.4°Lon
Z_max/Location 1.495/ -3.96667°Lat 107.0°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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Lithospheric temperature gradient
Sunda Shelf location map
Statistics - Lithospheric temperature gradient
Median 9.737
Mean 9.723
Scale 0.008
stdev 0.035
Z_min/Location 9.570/2.7°Lat 105.467°Lon
Z_max/Location 9.744/ -4.5°Lat 107.667°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
Sunda Shelf location map
Statistics - Isostatic correction
Median 0.285
Mean 0.302
Scale 0.102
stdev 0.091
Z_min/Location 0.063/2.06667°Lat 104.4°Lon
Z_max/Location 0.626/-3.96667°Lat 107.0°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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TTS (sediment)
Sunda Shelf location map
Statistics - TTS (sediment)
Median 0.712
Mean 0.765
Scale 0.139
stdev 0.262
Z_min/Location 0.184/-3.7°Lat 106.8°Lon
Z_max/Location 1.848/1.93333°Lat 104.467°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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Beta (Sediment)
Sunda Shelf location map
Statistics - Beta (Sediment)
Median 1.100
Mean 1.110
Scale 0.021
stdev 0.044
Z_min/Location 1.024/-3.7°Lat 106.8°Lon
Z_max/Location 1.310/1.93333°Lat 104.467°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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Crustal vs lithosph. extn.
Sunda Shelf location map
Statistics - Crustal vs lithosph. extn.
Median 0.003
Mean -0.008
Scale 0.013
stdev 0.025
Z_min/Location -0.091/-3.36667°Lat 106.167°Lon
Z_max/Location 0.023/2.1°Lat 107.767°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
Sunda Shelf location map
Statistics - Anomalous TTS
Median 0.743
Mean 0.820
Scale 0.204
stdev 0.319
Z_min/Location 0.458/-3.3°Lat 108.967°Lon
Z_max/Location 2.236/0.133333°Lat 104.733°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
Sunda Shelf location map
Statistics - Predicted elevation
Median 921.694
Mean 956.829
Scale 38.451
stdev 85.959
Z_min/Location 863.965/-3.26667°Lat 108.733°Lon
Z_max/Location 1300.850/-0.766667°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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Beta (Crust)
Sunda Shelf location map
Statistics - Beta (Crust)
Median 1.001
Mean 0.993
Scale 0.008
stdev 0.021
Z_min/Location 0.909/-3.36667°Lat 106.167°Lon
Z_max/Location 1.017/-3.26667°Lat 108.733°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)
Sunda Shelf location map
Statistics - TTS (crust)
Median 0.009
Mean -0.055
Scale 0.065
stdev 0.172
Z_min/Location -0.783/-3.36667°Lat 106.167°Lon
Z_max/Location 0.127/-3.26667°Lat 108.733°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
Sunda Shelf location map
Statistics - Differential Beta
Median 0.105
Mean 0.117
Scale 0.029
stdev 0.050
Z_min/Location 0.064/-3.3°Lat 109.0°Lon
Z_max/Location 0.348/0.5°Lat 104.733°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 02:36:58 CEST | © Christian Heine, School of Geosciences, Sydney University, Australia