ICONS atlas: SUN - North Sumatra Basin

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Overview

This page bundles the available data for the North 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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North Sumatra Basin location map
Basin name North Sumatra Basin
Region code SUN
Basin ID 6170
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.

North Sumatra Basin cross section
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Dynamic topography evolution for basin centroid
North 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
North Sumatra Basin location map
Statistics - Mantle Lid thickness
Median 67.851
Mean 68.168
Scale 4.516
stdev 3.981
Z_min/Location 62.015/6.13333°Lat 98.2667°Lon
Z_max/Location 80.373/ 4.4°Lat 96.8333°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
North Sumatra Basin location map
Statistics - Depth of 550 deg isotherm
Median -32.038
Mean -32.137
Scale 0.053
stdev 0.199
Z_min/Location -33.006/6.56667°Lat 96.1333°Lon
Z_max/Location -31.999/ 3.56667°Lat 99.6°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
North Sumatra Basin location map
Statistics - Mobil isopachs
Median 1.985
Mean 1.958
Scale 1.053
stdev 0.984
Z_min/Location 0.098/4.33333°Lat 96.9°Lon
Z_max/Location 4.466/ 8.36667°Lat 96.9°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
North Sumatra Basin location map
Statistics - Plain crustal thickness
Median 25.520
Mean 25.733
Scale 3.526
stdev 3.251
Z_min/Location 13.813/4.4°Lat 96.8333°Lon
Z_max/Location 31.389/ 6.23333°Lat 98.2333°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
North Sumatra Basin location map
Statistics - Base middle crust
Median -19.525
Mean -19.386
Scale 2.797
stdev 2.517
Z_min/Location -23.941/6.53333°Lat 98.2°Lon
Z_max/Location -11.427/ 4.4°Lat 96.8333°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
North Sumatra Basin location map
Statistics - Base lower crust
Median -27.857
Mean -27.687
Scale 3.433
stdev 3.301
Z_min/Location -33.799/6.33333°Lat 98.1333°Lon
Z_max/Location -16.195/ 4.4°Lat 96.8333°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
North Sumatra Basin location map
Statistics - Total crustal thickness
Median 27.243
Mean 27.385
Scale 3.849
stdev 3.481
Z_min/Location 15.407/4.4°Lat 96.8333°Lon
Z_max/Location 33.882/ 6.26667°Lat 98.1667°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
North Sumatra Basin location map
Statistics - Base upper crust
Median -10.894
Mean -10.822
Scale 2.077
stdev 1.574
Z_min/Location -13.646/6.46667°Lat 98.1°Lon
Z_max/Location -6.783/ 4.33333°Lat 96.9°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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Thermal lithospheric thickness
North Sumatra Basin location map
Statistics - Thermal lithospheric thickness
Median 95.202
Mean 95.709
Scale 0.275
stdev 1.015
Z_min/Location 95.000/5.0°Lat 97.0°Lon
Z_max/Location 100.118/ 6.56667°Lat 96.1333°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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Heatflow
North Sumatra Basin location map
Statistics - Heatflow
Median 82.148
Mean 82.339
Scale 3.056
stdev 2.234
Z_min/Location 78.744/6.03333°Lat 97.8333°Lon
Z_max/Location 87.149/ 9.3°Lat 97.6°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)
North Sumatra Basin location map
Statistics - Topography (ETOPO2)
Median -95.000
Mean -271.851
Scale 256.490
stdev 542.906
Z_min/Location -1350.000/6.23333°Lat 96.6333°Lon
Z_max/Location 2475.000/ 4.33333°Lat 96.9°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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Base hard sediments
North Sumatra Basin location map
Statistics - Base hard sediments
Median -1.935
Mean -1.972
Scale 0.961
stdev 0.931
Z_min/Location -4.539/9.7°Lat 96.8333°Lon
Z_max/Location -0.522/ 4.13333°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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Temperature at 50km depth
North Sumatra Basin location map
Statistics - Temperature at 50km depth
Median 861.322
Mean 859.657
Scale 0.926
stdev 3.338
Z_min/Location 845.133/6.63333°Lat 96.1667°Lon
Z_max/Location 862.000/ 5.0°Lat 97.0°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
North Sumatra Basin location map
Statistics - Laske sediment thickness
Median 1.916
Mean 1.932
Scale 1.137
stdev 1.055
Z_min/Location 0.036/4.1°Lat 98.1°Lon
Z_max/Location 4.474/ 6.06667°Lat 97.2333°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
North Sumatra Basin location map
Statistics - Lithospheric temperature gradient
Median 9.732
Mean 9.709
Scale 0.013
stdev 0.047
Z_min/Location 9.505/6.56667°Lat 96.1333°Lon
Z_max/Location 9.742/ 3.56667°Lat 99.6°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
North Sumatra Basin location map
Statistics - Isostatic correction
Median 0.794
Mean 0.788
Scale 0.447
stdev 0.413
Z_min/Location 0.016/4.1°Lat 98.1°Lon
Z_max/Location 1.735/6.06667°Lat 97.2333°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)
North Sumatra Basin location map
Statistics - TTS (sediment)
Median 1.059
Mean 1.184
Scale 0.635
stdev 0.740
Z_min/Location -0.124/4.6°Lat 99.1667°Lon
Z_max/Location 2.925/8.66667°Lat 96.6333°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)
North Sumatra Basin location map
Statistics - Beta (Sediment)
Median 1.157
Mean 1.194
Scale 0.107
stdev 0.145
Z_min/Location 0.984/4.6°Lat 99.1667°Lon
Z_max/Location 1.598/8.66667°Lat 96.6333°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.
North Sumatra Basin location map
Statistics - Crustal vs lithosph. extn.
Median -0.018
Mean 0.014
Scale 0.147
stdev 0.158
Z_min/Location -0.173/6.2°Lat 98.2667°Lon
Z_max/Location 0.869/4.4°Lat 96.8333°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
North Sumatra Basin location map
Statistics - Anomalous TTS
Median 1.127
Mean 1.181
Scale 1.219
stdev 1.002
Z_min/Location -2.055/4.33333°Lat 96.9°Lon
Z_max/Location 3.047/6.8°Lat 98.1667°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
North Sumatra Basin location map
Statistics - Predicted elevation
Median 777.882
Mean 716.411
Scale 499.910
stdev 467.818
Z_min/Location -1042.260/4.4°Lat 96.8333°Lon
Z_max/Location 1404.900/6.23333°Lat 98.2°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 (Crust)
North Sumatra Basin location map
Statistics - Beta (Crust)
Median 1.009
Mean 1.018
Scale 0.141
stdev 0.143
Z_min/Location 0.820/6.23333°Lat 98.2333°Lon
Z_max/Location 1.864/4.4°Lat 96.8333°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)
North Sumatra Basin location map
Statistics - TTS (crust)
Median 0.068
Mean 0.003
Scale 1.071
stdev 0.988
Z_min/Location -1.715/6.23333°Lat 98.2333°Lon
Z_max/Location 3.624/4.4°Lat 96.8333°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
North Sumatra Basin location map
Statistics - Differential Beta
Median 0.153
Mean 0.176
Scale 0.176
stdev 0.170
Z_min/Location -0.605/4.33333°Lat 96.9°Lon
Z_max/Location 0.494/9.43333°Lat 96.7667°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