ICONS atlas: SUN - Preah Basin

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Overview

This page bundles the available data for the Preah 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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Preah Basin location map

Basin name	Preah Basin
Region code	SUN
Basin ID	6700
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.

Preah Basin cross section

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Dynamic topography evolution for basin centroid

Preah 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

Preah Basin location map

Statistics - Mantle Lid thickness
Median	83.869
Mean	83.923
Scale	0.923
stdev	0.689
Z_min/Location	82.820/12.8667°Lat 107.0°Lon
Z_max/Location	85.375/ 13.0333°Lat 105.367°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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Depth of 550 deg isotherm

Preah Basin location map

Statistics - Depth of 550 deg isotherm
Median	-39.000
Mean	-38.997
Scale	0.001
stdev	0.005
Z_min/Location	-39.001/12.8°Lat 106.733°Lon
Z_max/Location	-38.978/ 13.3667°Lat 105.333°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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Mobil isopachs

Preah Basin location map

Statistics - Mobil isopachs
Median	-0.134
Mean	-0.156
Scale	0.067
stdev	0.074
Z_min/Location	-0.299/13.0333°Lat 107.533°Lon
Z_max/Location	0.011/ 13.0333°Lat 105.367°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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Plain crustal thickness

Preah Basin location map

Statistics - Plain crustal thickness
Median	41.195
Mean	41.139
Scale	0.913
stdev	0.684
Z_min/Location	39.687/13.0333°Lat 105.367°Lon
Z_max/Location	42.238/ 12.8667°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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Base middle crust

Preah Basin location map

Statistics - Base middle crust
Median	-33.035
Mean	-32.930
Scale	0.839
stdev	0.677
Z_min/Location	-33.985/12.8333°Lat 106.933°Lon
Z_max/Location	-31.304/ 13.0333°Lat 105.367°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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Base lower crust

Preah Basin location map

Statistics - Base lower crust
Median	-42.058
Mean	-41.986
Scale	0.859
stdev	0.663
Z_min/Location	-43.067/12.8333°Lat 106.933°Lon
Z_max/Location	-40.531/ 13.0333°Lat 105.367°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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Total crustal thickness

Preah Basin location map

Statistics - Total crustal thickness
Median	42.133
Mean	42.073
Scale	0.922
stdev	0.695
Z_min/Location	40.584/13.0333°Lat 105.367°Lon
Z_max/Location	43.181/ 12.8667°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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Base upper crust

Preah Basin location map

Statistics - Base upper crust
Median	-17.548
Mean	-17.471
Scale	0.432
stdev	0.374
Z_min/Location	-18.048/12.8°Lat 106.867°Lon
Z_max/Location	-16.501/ 13.0333°Lat 105.367°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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Thermal lithospheric thickness

Preah Basin location map

Statistics - Thermal lithospheric thickness
Median	126.000
Mean	125.996
Scale	0.002
stdev	0.011
Z_min/Location	125.956/13.3667°Lat 105.333°Lon
Z_max/Location	126.002/ 13.1667°Lat 106.4°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

Preah Basin location map

Statistics - Heatflow
Median	80.083
Mean	80.180
Scale	1.371
stdev	1.115
Z_min/Location	78.404/13.5°Lat 106.0°Lon
Z_max/Location	82.676/ 13.2667°Lat 107.533°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)

Preah Basin location map

Statistics - Topography (ETOPO2)
Median	139.500
Mean	139.549
Scale	37.806
stdev	41.114
Z_min/Location	54.000/13.0°Lat 106.233°Lon
Z_max/Location	364.000/ 13.1°Lat 107.5°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

Preah Basin location map

Statistics - Base hard sediments
Median	-0.856
Mean	-0.846
Scale	0.030
stdev	0.034
Z_min/Location	-0.896/12.9°Lat 106.233°Lon
Z_max/Location	-0.764/ 13.1°Lat 107.567°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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Temperature at 50km depth

Preah Basin location map

Statistics - Temperature at 50km depth
Median	722.997
Mean	723.013
Scale	0.005
stdev	0.038
Z_min/Location	722.993/13.3333°Lat 106.4°Lon
Z_max/Location	723.175/ 13.3667°Lat 105.333°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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Laske sediment thickness

Preah Basin location map

Statistics - Laske sediment thickness
Median	0.189
Mean	0.182
Scale	0.090
stdev	0.077
Z_min/Location	0.037/13.1°Lat 107.567°Lon
Z_max/Location	0.317/ 13.0333°Lat 105.533°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

Preah Basin location map

Statistics - Lithospheric temperature gradient
Median	7.598
Mean	7.599
Scale	0.000
stdev	0.001
Z_min/Location	7.598/12.8°Lat 106.733°Lon
Z_max/Location	7.604/ 13.0333°Lat 105.367°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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Computations

Isostatic correction

Preah Basin location map

Statistics - Isostatic correction
Median	0.082
Mean	0.079
Scale	0.039
stdev	0.033
Z_min/Location	0.016/13.1°Lat 107.567°Lon
Z_max/Location	0.137/13.0333°Lat 105.533°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)

Preah Basin location map

Statistics - TTS (sediment)
Median	0.774
Mean	0.768
Scale	0.010
stdev	0.017
Z_min/Location	0.708/13.0667°Lat 105.367°Lon
Z_max/Location	0.799/13.5333°Lat 106.067°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)

Preah Basin location map

Statistics - Beta (Sediment)
Median	1.110
Mean	1.109
Scale	0.002
stdev	0.003
Z_min/Location	1.100/13.0667°Lat 105.367°Lon
Z_max/Location	1.114/13.5333°Lat 106.067°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.

Preah Basin location map

Statistics - Crustal vs lithosph. extn.
Median	-0.004
Mean	-0.002
Scale	0.022
stdev	0.017
Z_min/Location	-0.029/12.8667°Lat 107.0°Lon
Z_max/Location	0.034/13.0333°Lat 105.367°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

Preah Basin location map

Statistics - Anomalous TTS
Median	0.808
Mean	0.789
Scale	0.169
stdev	0.138
Z_min/Location	0.452/13.0333°Lat 105.367°Lon
Z_max/Location	1.004/12.8333°Lat 106.933°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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Predicted elevation

Preah Basin location map

Statistics - Predicted elevation
Median	1525.570
Mean	1521.310
Scale	48.686
stdev	37.335
Z_min/Location	1438.160/13.0333°Lat 105.367°Lon
Z_max/Location	1578.780/12.8667°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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Beta (Crust)

Preah Basin location map

Statistics - Beta (Crust)
Median	0.996
Mean	0.998
Scale	0.022
stdev	0.017
Z_min/Location	0.971/12.8667°Lat 107.0°Lon
Z_max/Location	1.034/13.0333°Lat 105.367°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)

Preah Basin location map

Statistics - TTS (crust)
Median	-0.031
Mean	-0.021
Scale	0.174
stdev	0.130
Z_min/Location	-0.230/12.8667°Lat 107.0°Lon
Z_max/Location	0.256/13.0333°Lat 105.367°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

Preah Basin location map

Statistics - Differential Beta
Median	0.114
Mean	0.111
Scale	0.021
stdev	0.018
Z_min/Location	0.066/13.0333°Lat 105.367°Lon
Z_max/Location	0.138/12.8333°Lat 106.933°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