ICONS atlas: SUN - Tonle Sap Basin

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Overview

This page bundles the available data for the Tonle Sap 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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Tonle Sap Basin location map
Basin name Tonle Sap Basin
Region code SUN
Basin ID 6220
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.

Tonle Sap Basin cross section
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Dynamic topography evolution for basin centroid
Tonle Sap 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
Tonle Sap Basin location map
Statistics - Mantle Lid thickness
Median 85.108
Mean 84.987
Scale 2.254
stdev 2.013
Z_min/Location 79.488/12.7333°Lat 102.933°Lon
Z_max/Location 88.726/ 12.2667°Lat 104.333°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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Depth of 550 deg isotherm
Tonle Sap Basin location map
Statistics - Depth of 550 deg isotherm
Median -37.899
Mean -37.769
Scale 1.058
stdev 0.865
Z_min/Location -39.000/14.0°Lat 104.0°Lon
Z_max/Location -35.522/ 12.7333°Lat 102.933°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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Mobil isopachs
Tonle Sap Basin location map
Statistics - Mobil isopachs
Median 0.392
Mean 0.360
Scale 0.596
stdev 0.448
Z_min/Location -0.365/13.9°Lat 103.9°Lon
Z_max/Location 1.120/ 12.4°Lat 104.433°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
Tonle Sap Basin location map
Statistics - Plain crustal thickness
Median 36.076
Mean 35.862
Scale 3.225
stdev 2.690
Z_min/Location 30.273/12.2333°Lat 103.433°Lon
Z_max/Location 40.461/ 13.8667°Lat 104.667°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 middle crust
Tonle Sap Basin location map
Statistics - Base middle crust
Median -27.361
Mean -27.245
Scale 3.372
stdev 2.796
Z_min/Location -32.346/13.8667°Lat 104.667°Lon
Z_max/Location -21.813/ 12.1°Lat 103.8°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
Tonle Sap Basin location map
Statistics - Base lower crust
Median -36.891
Mean -36.727
Scale 3.166
stdev 2.612
Z_min/Location -41.310/13.8667°Lat 104.667°Lon
Z_max/Location -31.440/ 12.2333°Lat 103.433°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
Tonle Sap Basin location map
Statistics - Total crustal thickness
Median 36.986
Mean 36.815
Scale 3.179
stdev 2.630
Z_min/Location 31.479/12.2333°Lat 103.433°Lon
Z_max/Location 41.425/ 13.8667°Lat 104.667°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 upper crust
Tonle Sap Basin location map
Statistics - Base upper crust
Median -14.137
Mean -14.103
Scale 1.978
stdev 1.633
Z_min/Location -17.157/13.8667°Lat 104.667°Lon
Z_max/Location -10.901/ 12.0667°Lat 103.867°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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Thermal lithospheric thickness
Tonle Sap Basin location map
Statistics - Thermal lithospheric thickness
Median 122.863
Mean 121.802
Scale 3.617
stdev 3.503
Z_min/Location 111.585/12.7333°Lat 102.933°Lon
Z_max/Location 126.000/ 13.0°Lat 105.0°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
Tonle Sap Basin location map
Statistics - Heatflow
Median 85.666
Mean 85.929
Scale 3.151
stdev 2.801
Z_min/Location 80.531/13.8°Lat 104.867°Lon
Z_max/Location 92.189/ 12.2333°Lat 103.433°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)
Tonle Sap Basin location map
Statistics - Topography (ETOPO2)
Median 22.000
Mean 42.581
Scale 19.274
stdev 62.874
Z_min/Location 1.000/13.2667°Lat 103.7°Lon
Z_max/Location 580.000/ 13.6333°Lat 104.967°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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Base hard sediments
Tonle Sap Basin location map
Statistics - Base hard sediments
Median -0.828
Mean -0.865
Scale 0.086
stdev 0.117
Z_min/Location -1.341/12.7333°Lat 102.933°Lon
Z_max/Location -0.744/ 13.0333°Lat 104.367°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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Temperature at 50km depth
Tonle Sap Basin location map
Statistics - Temperature at 50km depth
Median 736.402
Mean 741.102
Scale 15.568
stdev 15.316
Z_min/Location 723.000/14.0°Lat 104.0°Lon
Z_max/Location 786.292/ 12.7333°Lat 102.933°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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Laske sediment thickness
Tonle Sap Basin location map
Statistics - Laske sediment thickness
Median 0.237
Mean 0.287
Scale 0.144
stdev 0.236
Z_min/Location -0.032/13.5333°Lat 103.0°Lon
Z_max/Location 1.255/ 12.0667°Lat 103.867°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
Tonle Sap Basin location map
Statistics - Lithospheric temperature gradient
Median 7.884
Mean 7.942
Scale 0.282
stdev 0.262
Z_min/Location 7.598/14.0°Lat 104.0°Lon
Z_max/Location 8.625/ 12.8°Lat 103.0°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
Tonle Sap Basin location map
Statistics - Isostatic correction
Median 0.102
Mean 0.124
Scale 0.062
stdev 0.100
Z_min/Location 0.000/13.7333°Lat 103.033°Lon
Z_max/Location 0.529/12.0667°Lat 103.867°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)
Tonle Sap Basin location map
Statistics - TTS (sediment)
Median 0.722
Mean 0.741
Scale 0.113
stdev 0.144
Z_min/Location 0.424/12.1°Lat 103.933°Lon
Z_max/Location 1.223/12.7333°Lat 102.933°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 (Sediment)
Tonle Sap Basin location map
Statistics - Beta (Sediment)
Median 1.102
Mean 1.105
Scale 0.018
stdev 0.023
Z_min/Location 1.057/12.1°Lat 103.933°Lon
Z_max/Location 1.185/12.7333°Lat 102.933°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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Crustal vs lithosph. extn.
Tonle Sap Basin location map
Statistics - Crustal vs lithosph. extn.
Median 0.027
Mean 0.039
Scale 0.063
stdev 0.059
Z_min/Location -0.055/13.8667°Lat 104.667°Lon
Z_max/Location 0.188/12.0667°Lat 103.867°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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Anomalous TTS
Tonle Sap Basin location map
Statistics - Anomalous TTS
Median 0.364
Mean 0.298
Scale 0.602
stdev 0.546
Z_min/Location -1.040/12.0667°Lat 103.867°Lon
Z_max/Location 1.270/13.8667°Lat 104.667°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
Tonle Sap Basin location map
Statistics - Predicted elevation
Median 1257.120
Mean 1229.780
Scale 180.348
stdev 162.554
Z_min/Location 840.930/12.0667°Lat 103.867°Lon
Z_max/Location 1490.970/13.8667°Lat 104.667°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)
Tonle Sap Basin location map
Statistics - Beta (Crust)
Median 1.054
Mean 1.066
Scale 0.093
stdev 0.082
Z_min/Location 0.940/13.8667°Lat 104.667°Lon
Z_max/Location 1.256/12.2333°Lat 103.433°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)
Tonle Sap Basin location map
Statistics - TTS (crust)
Median 0.399
Mean 0.443
Scale 0.663
stdev 0.553
Z_min/Location -0.503/13.8667°Lat 104.667°Lon
Z_max/Location 1.593/12.2333°Lat 103.433°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
Tonle Sap Basin location map
Statistics - Differential Beta
Median 0.055
Mean 0.039
Scale 0.082
stdev 0.081
Z_min/Location -0.174/12.0667°Lat 103.867°Lon
Z_max/Location 0.169/13.8333°Lat 104.767°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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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