ICONS atlas: SUN - Central Sumatra Basin

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Overview

This page bundles the available data for the Central Sumatra Basin 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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Central Sumatra Basin location map
Basin name Central Sumatra Basin
Region code SUN
Basin ID 6150
Plate location/code back-arc/BA
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.

Central Sumatra Basin cross section
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Dynamic topography evolution for basin centroid
Central Sumatra 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
Central Sumatra Basin location map
Statistics - Mantle Lid thickness
Median 66.052
Mean 66.523
Scale 3.548
stdev 3.085
Z_min/Location 61.712/0.1°Lat 103.3°Lon
Z_max/Location 73.674/ 1.53333°Lat 99.3°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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Depth of 550 deg isotherm
Central Sumatra Basin location map
Statistics - Depth of 550 deg isotherm
Median -32.000
Mean -32.002
Scale 0.001
stdev 0.006
Z_min/Location -32.053/-0.166667°Lat 100.567°Lon
Z_max/Location -31.998/ 3.63333°Lat 100.067°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
Central Sumatra Basin location map
Statistics - Mobil isopachs
Median 1.027
Mean 1.073
Scale 0.157
stdev 0.354
Z_min/Location 0.277/-0.0666667°Lat 100.4°Lon
Z_max/Location 2.353/ 1.2°Lat 100.9°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
Central Sumatra Basin location map
Statistics - Plain crustal thickness
Median 27.885
Mean 27.320
Scale 3.619
stdev 3.075
Z_min/Location 20.302/1.4°Lat 99.4667°Lon
Z_max/Location 31.320/ 0.3°Lat 102.833°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
Central Sumatra Basin location map
Statistics - Base middle crust
Median -19.474
Mean -19.313
Scale 2.191
stdev 1.945
Z_min/Location -23.046/0.4°Lat 103.467°Lon
Z_max/Location -15.627/ 1.73333°Lat 99.7667°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 lower crust
Central Sumatra Basin location map
Statistics - Base lower crust
Median -28.673
Mean -28.310
Scale 3.593
stdev 3.021
Z_min/Location -33.190/0.166667°Lat 103.333°Lon
Z_max/Location -22.213/ 1.4°Lat 99.4667°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
Central Sumatra Basin location map
Statistics - Total crustal thickness
Median 28.951
Mean 28.489
Scale 3.538
stdev 3.074
Z_min/Location 21.511/1.53333°Lat 99.3°Lon
Z_max/Location 33.324/ 0.1°Lat 103.3°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 upper crust
Central Sumatra Basin location map
Statistics - Base upper crust
Median -10.304
Mean -10.323
Scale 0.848
stdev 0.885
Z_min/Location -12.927/0.4°Lat 103.467°Lon
Z_max/Location -8.811/ 1.93333°Lat 99.9333°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
Central Sumatra Basin location map
Statistics - Thermal lithospheric thickness
Median 95.001
Mean 95.012
Scale 0.003
stdev 0.029
Z_min/Location 94.998/3.13333°Lat 101.033°Lon
Z_max/Location 95.271/ -0.166667°Lat 100.567°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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Heatflow
Central Sumatra Basin location map
Statistics - Heatflow
Median 87.230
Mean 86.800
Scale 1.595
stdev 1.567
Z_min/Location 82.345/4.0°Lat 99.8667°Lon
Z_max/Location 89.024/ 1.9°Lat 101.733°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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Topography (ETOPO2)
Central Sumatra Basin location map
Statistics - Topography (ETOPO2)
Median 12.000
Mean 51.781
Scale 38.548
stdev 146.080
Z_min/Location -174.000/2.03333°Lat 101.333°Lon
Z_max/Location 1775.000/ 1.76667°Lat 99.3667°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 hard sediments
Central Sumatra Basin location map
Statistics - Base hard sediments
Median -1.187
Mean -1.282
Scale 0.460
stdev 0.469
Z_min/Location -2.643/1.53333°Lat 99.3°Lon
Z_max/Location -0.545/ 4.03333°Lat 99.7°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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Temperature at 50km depth
Central Sumatra Basin location map
Statistics - Temperature at 50km depth
Median 861.995
Mean 861.960
Scale 0.014
stdev 0.094
Z_min/Location 861.127/-0.166667°Lat 100.567°Lon
Z_max/Location 862.009/ 3.0°Lat 101.067°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
Central Sumatra Basin location map
Statistics - Laske sediment thickness
Median 0.915
Mean 0.919
Scale 0.230
stdev 0.313
Z_min/Location 0.066/0.0333333°Lat 101.1°Lon
Z_max/Location 2.236/ 1.56667°Lat 99.2667°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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Lithospheric temperature gradient
Central Sumatra Basin location map
Statistics - Lithospheric temperature gradient
Median 9.742
Mean 9.741
Scale 0.000
stdev 0.002
Z_min/Location 9.728/-0.1°Lat 100.433°Lon
Z_max/Location 9.742/ 3.63333°Lat 100.167°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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Computations

Isostatic correction
Central Sumatra Basin location map
Statistics - Isostatic correction
Median 0.389
Mean 0.389
Scale 0.096
stdev 0.130
Z_min/Location 0.029/0.0333333°Lat 101.1°Lon
Z_max/Location 0.919/1.56667°Lat 99.2667°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)
Central Sumatra Basin location map
Statistics - TTS (sediment)
Median 0.781
Mean 0.893
Scale 0.492
stdev 0.502
Z_min/Location 0.089/4.03333°Lat 99.7°Lon
Z_max/Location 2.290/0.9°Lat 99.8667°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)
Central Sumatra Basin location map
Statistics - Beta (Sediment)
Median 1.111
Mean 1.135
Scale 0.076
stdev 0.088
Z_min/Location 1.012/4.03333°Lat 99.7°Lon
Z_max/Location 1.414/0.9°Lat 99.8667°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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Crustal vs lithosph. extn.
Central Sumatra Basin location map
Statistics - Crustal vs lithosph. extn.
Median -0.073
Mean -0.041
Scale 0.115
stdev 0.117
Z_min/Location -0.175/0.3°Lat 102.833°Lon
Z_max/Location 0.275/1.4°Lat 99.4667°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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Anomalous TTS
Central Sumatra Basin location map
Statistics - Anomalous TTS
Median 1.339
Mean 1.336
Scale 0.592
stdev 0.597
Z_min/Location 0.081/1.56667°Lat 99.2667°Lon
Z_max/Location 3.060/0.4°Lat 103.467°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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Predicted elevation
Central Sumatra Basin location map
Statistics - Predicted elevation
Median 923.791
Mean 848.868
Scale 386.922
stdev 361.978
Z_min/Location -43.687/1.53333°Lat 99.3°Lon
Z_max/Location 1367.020/0.1°Lat 103.3°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)
Central Sumatra Basin location map
Statistics - Beta (Crust)
Median 0.927
Mean 0.959
Scale 0.115
stdev 0.117
Z_min/Location 0.826/0.3°Lat 102.833°Lon
Z_max/Location 1.274/1.4°Lat 99.4667°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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TTS (crust)
Central Sumatra Basin location map
Statistics - TTS (crust)
Median -0.614
Mean -0.443
Scale 1.095
stdev 0.930
Z_min/Location -1.652/0.3°Lat 102.833°Lon
Z_max/Location 1.680/1.4°Lat 99.4667°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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Differential Beta
Central Sumatra Basin location map
Statistics - Differential Beta
Median 0.182
Mean 0.176
Scale 0.066
stdev 0.065
Z_min/Location 0.017/1.56667°Lat 99.2667°Lon
Z_max/Location 0.408/0.466667°Lat 103.467°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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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