ICONS atlas: SUN - Khorat Swell

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Overview

This page bundles the available data for the Khorat Swell 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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Khorat Swell location map

Basin name	Khorat Swell
Region code	SUN
Basin ID	6350
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.

Khorat Swell cross section

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Dynamic topography evolution for basin centroid

Khorat Swell 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

Khorat Swell location map

Statistics - Mantle Lid thickness
Median	88.763
Mean	87.643
Scale	4.867
stdev	4.446
Z_min/Location	77.871/8.0°Lat 103.667°Lon
Z_max/Location	95.563/ 10.0°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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Depth of 550 deg isotherm

Khorat Swell location map

Statistics - Depth of 550 deg isotherm
Median	-37.075
Mean	-37.000
Scale	1.031
stdev	0.840
Z_min/Location	-38.814/11.9667°Lat 104.933°Lon
Z_max/Location	-35.271/ 8.0°Lat 103.667°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

Khorat Swell location map

Statistics - Mobil isopachs
Median	0.801
Mean	0.727
Scale	0.627
stdev	0.871
Z_min/Location	-1.096/7.73333°Lat 105.067°Lon
Z_max/Location	4.026/ 7.0°Lat 106.7°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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Plain crustal thickness

Khorat Swell location map

Statistics - Plain crustal thickness
Median	27.915
Mean	28.459
Scale	0.569
stdev	1.644
Z_min/Location	27.140/9.26667°Lat 105.767°Lon
Z_max/Location	35.242/ 11.8667°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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Base middle crust

Khorat Swell location map

Statistics - Base middle crust
Median	-22.191
Mean	-22.361
Scale	0.527
stdev	0.865
Z_min/Location	-26.684/11.6°Lat 105.167°Lon
Z_max/Location	-20.628/ 9.4°Lat 105.7°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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Base lower crust

Khorat Swell location map

Statistics - Base lower crust
Median	-30.315
Mean	-30.592
Scale	0.633
stdev	1.239
Z_min/Location	-36.155/11.8667°Lat 105.0°Lon
Z_max/Location	-28.533/ 9.4°Lat 105.7°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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Total crustal thickness

Khorat Swell location map

Statistics - Total crustal thickness
Median	30.261
Mean	30.555
Scale	0.650
stdev	1.264
Z_min/Location	28.512/9.4°Lat 105.7°Lon
Z_max/Location	36.194/ 11.8667°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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Base upper crust

Khorat Swell location map

Statistics - Base upper crust
Median	-12.173
Mean	-12.258
Scale	0.669
stdev	0.672
Z_min/Location	-13.854/11.6°Lat 105.167°Lon
Z_max/Location	-10.585/ 11.7°Lat 103.767°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

Khorat Swell location map

Statistics - Thermal lithospheric thickness
Median	118.966
Mean	118.321
Scale	5.732
stdev	4.593
Z_min/Location	108.958/8.0°Lat 103.667°Lon
Z_max/Location	125.560/ 11.9667°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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Heatflow

Khorat Swell location map

Statistics - Heatflow
Median	98.250
Mean	97.789
Scale	1.939
stdev	3.254
Z_min/Location	86.449/11.9667°Lat 104.933°Lon
Z_max/Location	102.594/ 9.76667°Lat 104.067°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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Topography (ETOPO2)

Khorat Swell location map

Statistics - Topography (ETOPO2)
Median	-22.000
Mean	-1.812
Scale	26.687
stdev	94.937
Z_min/Location	-85.000/10.3°Lat 104.167°Lon
Z_max/Location	1400.000/ 12.0667°Lat 104.133°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

Khorat Swell location map

Statistics - Base hard sediments
Median	-2.122
Mean	-2.133
Scale	0.777
stdev	0.734
Z_min/Location	-3.587/8.13333°Lat 104.1°Lon
Z_max/Location	-0.800/ 12.3667°Lat 104.467°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

Khorat Swell location map

Statistics - Temperature at 50km depth
Median	753.521
Mean	756.300
Scale	25.785
stdev	20.689
Z_min/Location	724.000/11.0°Lat 105.0°Lon
Z_max/Location	798.275/ 8.0°Lat 103.667°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

Khorat Swell location map

Statistics - Laske sediment thickness
Median	1.452
Mean	1.819
Scale	1.070
stdev	1.289
Z_min/Location	0.189/11.7°Lat 105.1°Lon
Z_max/Location	5.242/ 7.03333°Lat 104.633°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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Lithospheric temperature gradient

Khorat Swell location map

Statistics - Lithospheric temperature gradient
Median	8.111
Mean	8.157
Scale	0.363
stdev	0.296
Z_min/Location	7.643/11.9667°Lat 104.933°Lon
Z_max/Location	8.751/ 7.66667°Lat 104.0°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

Khorat Swell location map

Statistics - Isostatic correction
Median	0.609
Mean	0.738
Scale	0.437
stdev	0.492
Z_min/Location	0.082/11.7°Lat 105.1°Lon
Z_max/Location	1.991/7.03333°Lat 104.633°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)

Khorat Swell location map

Statistics - TTS (sediment)
Median	1.411
Mean	1.395
Scale	0.681
stdev	0.574
Z_min/Location	0.263/6.76667°Lat 104.867°Lon
Z_max/Location	2.543/8.3°Lat 104.9°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)

Khorat Swell location map

Statistics - Beta (Sediment)
Median	1.220
Mean	1.227
Scale	0.127
stdev	0.112
Z_min/Location	1.035/6.76667°Lat 104.867°Lon
Z_max/Location	1.482/8.3°Lat 104.9°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.

Khorat Swell location map

Statistics - Crustal vs lithosph. extn.
Median	-0.029
Mean	-0.029
Scale	0.050
stdev	0.049
Z_min/Location	-0.158/11.8667°Lat 105.0°Lon
Z_max/Location	0.060/9.56667°Lat 105.6°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

Khorat Swell location map

Statistics - Anomalous TTS
Median	1.467
Mean	1.477
Scale	0.516
stdev	0.456
Z_min/Location	0.371/6.8°Lat 104.833°Lon
Z_max/Location	2.794/11.7°Lat 105.1°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

Khorat Swell location map

Statistics - Predicted elevation
Median	740.354
Mean	733.467
Scale	148.730
stdev	147.041
Z_min/Location	412.171/9.56667°Lat 105.6°Lon
Z_max/Location	1134.200/11.8667°Lat 105.0°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)

Khorat Swell location map

Statistics - Beta (Crust)
Median	1.009
Mean	0.993
Scale	0.021
stdev	0.051
Z_min/Location	0.799/11.8667°Lat 105.0°Lon
Z_max/Location	1.038/9.26667°Lat 105.767°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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TTS (crust)

Khorat Swell location map

Statistics - TTS (crust)
Median	0.069
Mean	-0.082
Scale	0.158
stdev	0.456
Z_min/Location	-1.965/11.8667°Lat 105.0°Lon
Z_max/Location	0.284/9.26667°Lat 105.767°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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Differential Beta

Khorat Swell location map

Statistics - Differential Beta
Median	0.227
Mean	0.234
Scale	0.094
stdev	0.089
Z_min/Location	0.049/6.8°Lat 104.833°Lon
Z_max/Location	0.456/8.26667°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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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