ICONS atlas: SAM - Laboulaye (Levalle) Basin

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Overview

This page bundles the available data for the Laboulaye (Levalle) Basin in the South America. 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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Laboulaye (Levalle) Basin location map
Basin name Laboulaye (Levalle) Basin
Region code SAM
Basin ID 2560
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.

Laboulaye (Levalle) Basin cross section
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Dynamic topography evolution for basin centroid
Laboulaye (Levalle) 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
Laboulaye (Levalle) Basin location map
Statistics - Mantle Lid thickness
Median 101.113
Mean 100.777
Scale 1.492
stdev 1.465
Z_min/Location 97.291/-34.4333°Lat -64.6667°Lon
Z_max/Location 103.215/ -35.0°Lat -63.2333°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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Depth of 550 deg isotherm
Laboulaye (Levalle) Basin location map
Statistics - Depth of 550 deg isotherm
Median -41.803
Mean -41.732
Scale 0.196
stdev 0.226
Z_min/Location -42.000/-34.0°Lat -64.0°Lon
Z_max/Location -40.959/ -34.6°Lat -64.6667°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
Laboulaye (Levalle) Basin location map
Statistics - Mobil isopachs
Median 2.649
Mean 2.656
Scale 1.818
stdev 1.256
Z_min/Location 0.323/-33.3333°Lat -63.9667°Lon
Z_max/Location 4.666/ -34.6°Lat -63.7°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
Laboulaye (Levalle) Basin location map
Statistics - Plain crustal thickness
Median 39.998
Mean 39.993
Scale 0.033
stdev 0.084
Z_min/Location 39.738/-34.6°Lat -64.6667°Lon
Z_max/Location 40.346/ -33.5°Lat -64.3°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 middle crust
Laboulaye (Levalle) Basin location map
Statistics - Base middle crust
Median -31.767
Mean -31.760
Scale 0.033
stdev 0.033
Z_min/Location -31.818/-34.5667°Lat -63.3333°Lon
Z_max/Location -31.638/ -33.3333°Lat -63.9667°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
Laboulaye (Levalle) Basin location map
Statistics - Base lower crust
Median -40.772
Mean -40.761
Scale 0.056
stdev 0.062
Z_min/Location -40.895/-33.6667°Lat -64.4667°Lon
Z_max/Location -40.561/ -34.6°Lat -64.6667°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
Laboulaye (Levalle) Basin location map
Statistics - Total crustal thickness
Median 41.004
Mean 40.997
Scale 0.030
stdev 0.053
Z_min/Location 40.804/-34.6°Lat -64.6667°Lon
Z_max/Location 41.209/ -33.6°Lat -64.4°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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Base upper crust
Laboulaye (Levalle) Basin location map
Statistics - Base upper crust
Median -16.817
Mean -16.775
Scale 0.047
stdev 0.111
Z_min/Location -16.868/-34.5667°Lat -63.3667°Lon
Z_max/Location -16.303/ -33.3333°Lat -64.0667°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
Laboulaye (Levalle) Basin location map
Statistics - Thermal lithospheric thickness
Median 142.111
Mean 141.774
Scale 1.504
stdev 1.488
Z_min/Location 138.102/-34.6°Lat -64.6667°Lon
Z_max/Location 144.230/ -35.0°Lat -63.2333°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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Heatflow
Laboulaye (Levalle) Basin location map
Statistics - Heatflow
Median 58.105
Mean 58.417
Scale 1.824
stdev 1.707
Z_min/Location 56.082/-33.9333°Lat -63.8667°Lon
Z_max/Location 63.106/ -36.0333°Lat -63.6667°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)
Laboulaye (Levalle) Basin location map
Statistics - Topography (ETOPO2)
Median 150.000
Mean 163.599
Scale 45.961
stdev 49.216
Z_min/Location 90.000/-35.7°Lat -63.4333°Lon
Z_max/Location 338.000/ -33.3667°Lat -64.1°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
Laboulaye (Levalle) Basin location map
Statistics - Base hard sediments
Median -0.797
Mean -0.768
Scale 0.026
stdev 0.073
Z_min/Location -0.824/-34.6°Lat -64.6667°Lon
Z_max/Location -0.457/ -33.3333°Lat -64.0667°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
Laboulaye (Levalle) Basin location map
Statistics - Temperature at 50km depth
Median 668.937
Mean 669.917
Scale 4.682
stdev 4.576
Z_min/Location 661.880/-34.9667°Lat -63.2333°Lon
Z_max/Location 681.275/ -34.6°Lat -64.6667°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
Laboulaye (Levalle) Basin location map
Statistics - Laske sediment thickness
Median 0.778
Mean 0.765
Scale 0.216
stdev 0.170
Z_min/Location 0.460/-33.5667°Lat -64.0667°Lon
Z_max/Location 1.017/ -35.1333°Lat -63.8667°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
Laboulaye (Levalle) Basin location map
Statistics - Lithospheric temperature gradient
Median 6.910
Mean 6.909
Scale 0.064
stdev 0.053
Z_min/Location 6.794/-35.0°Lat -63.2333°Lon
Z_max/Location 7.010/ -34.4667°Lat -64.6667°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
Laboulaye (Levalle) Basin location map
Statistics - Isostatic correction
Median 0.331
Mean 0.326
Scale 0.090
stdev 0.071
Z_min/Location 0.197/-33.5667°Lat -64.0667°Lon
Z_max/Location 0.431/-35.1333°Lat -63.8667°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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TTS (sediment)
Laboulaye (Levalle) Basin location map
Statistics - TTS (sediment)
Median 0.443
Mean 0.442
Scale 0.076
stdev 0.059
Z_min/Location 0.257/-33.3333°Lat -64.0667°Lon
Z_max/Location 0.547/-34.1°Lat -63.9333°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)
Laboulaye (Levalle) Basin location map
Statistics - Beta (Sediment)
Median 1.060
Mean 1.060
Scale 0.011
stdev 0.008
Z_min/Location 1.034/-33.3333°Lat -64.0667°Lon
Z_max/Location 1.075/-34.1°Lat -63.9333°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.
Laboulaye (Levalle) Basin location map
Statistics - Crustal vs lithosph. extn.
Median -0.004
Mean -0.006
Scale 0.010
stdev 0.010
Z_min/Location -0.032/-33.6667°Lat -64.4667°Lon
Z_max/Location 0.010/-35.1°Lat -63.2333°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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Anomalous TTS
Laboulaye (Levalle) Basin location map
Statistics - Anomalous TTS
Median 0.442
Mean 0.442
Scale 0.064
stdev 0.053
Z_min/Location 0.298/-33.3333°Lat -63.9667°Lon
Z_max/Location 0.546/-34.1°Lat -63.9°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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Predicted elevation
Laboulaye (Levalle) Basin location map
Statistics - Predicted elevation
Median 1195.680
Mean 1201.150
Scale 24.287
stdev 23.922
Z_min/Location 1159.940/-35.0333°Lat -63.2333°Lon
Z_max/Location 1256.390/-33.6667°Lat -64.4667°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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Beta (Crust)
Laboulaye (Levalle) Basin location map
Statistics - Beta (Crust)
Median 1.000
Mean 1.000
Scale 0.001
stdev 0.002
Z_min/Location 0.991/-33.5°Lat -64.3°Lon
Z_max/Location 1.007/-34.6°Lat -64.6667°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)
Laboulaye (Levalle) Basin location map
Statistics - TTS (crust)
Median 0.000
Mean 0.001
Scale 0.006
stdev 0.017
Z_min/Location -0.068/-33.5°Lat -64.3°Lon
Z_max/Location 0.051/-34.6°Lat -64.6667°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
Laboulaye (Levalle) Basin location map
Statistics - Differential Beta
Median 0.060
Mean 0.060
Scale 0.009
stdev 0.008
Z_min/Location 0.039/-33.3333°Lat -63.9667°Lon
Z_max/Location 0.075/-34.1°Lat -63.9°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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This basin data is based on interpolated global grids and might contain gridding errors or wrongly interpolated data values.

Page generated 2008-08-03 02:36:53 CEST | © Christian Heine, School of Geosciences, Sydney University, Australia