ICONS atlas: SAM - Santa Lucia Basin

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Overview

This page bundles the available data for the Santa Lucia 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.

Select data to display:

Santa Lucia Basin location map
Basin name Santa Lucia Basin
Region code SAM
Basin ID 2020
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.

Santa Lucia Basin cross section
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Dynamic topography evolution for basin centroid
Santa Lucia 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
Santa Lucia Basin location map
Statistics - Mantle Lid thickness
Median 88.353
Mean 88.492
Scale 0.728
stdev 0.795
Z_min/Location 86.826/-34.3°Lat -56.6667°Lon
Z_max/Location 91.087/ -34.7°Lat -57.7333°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
Santa Lucia Basin location map
Statistics - Depth of 550 deg isotherm
Median -37.497
Mean -37.644
Scale 0.592
stdev 0.545
Z_min/Location -39.239/-34.7°Lat -57.7333°Lon
Z_max/Location -37.057/ -34.2333°Lat -55.8667°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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Mobil isopachs
Santa Lucia Basin location map
Statistics - Mobil isopachs
Median 0.115
Mean 0.128
Scale 0.109
stdev 0.111
Z_min/Location -0.074/-34.2333°Lat -55.9°Lon
Z_max/Location 0.484/ -35.1°Lat -56.9667°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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Plain crustal thickness
Santa Lucia Basin location map
Statistics - Plain crustal thickness
Median 31.887
Mean 32.287
Scale 3.700
stdev 2.809
Z_min/Location 28.630/-34.5667°Lat -55.7°Lon
Z_max/Location 38.764/ -34.7°Lat -57.7333°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
Santa Lucia Basin location map
Statistics - Base middle crust
Median -24.775
Mean -25.045
Scale 4.057
stdev 3.057
Z_min/Location -31.807/-34.7°Lat -57.7333°Lon
Z_max/Location -20.835/ -34.4333°Lat -55.4333°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
Santa Lucia Basin location map
Statistics - Base lower crust
Median -34.295
Mean -34.554
Scale 3.636
stdev 2.730
Z_min/Location -40.568/-34.7°Lat -57.7333°Lon
Z_max/Location -30.821/ -34.4667°Lat -55.4667°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
Santa Lucia Basin location map
Statistics - Total crustal thickness
Median 34.310
Mean 34.573
Scale 3.651
stdev 2.740
Z_min/Location 30.832/-34.5°Lat -55.5°Lon
Z_max/Location 40.612/ -34.7°Lat -57.7333°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
Santa Lucia Basin location map
Statistics - Base upper crust
Median -13.548
Mean -13.617
Scale 2.027
stdev 1.550
Z_min/Location -16.902/-34.7°Lat -57.7333°Lon
Z_max/Location -11.149/ -34.3°Lat -55.4°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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Thermal lithospheric thickness
Santa Lucia Basin location map
Statistics - Thermal lithospheric thickness
Median 122.455
Mean 123.065
Scale 4.056
stdev 3.305
Z_min/Location 118.875/-34.2333°Lat -55.8333°Lon
Z_max/Location 131.699/ -34.7°Lat -57.7333°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
Santa Lucia Basin location map
Statistics - Heatflow
Median 64.775
Mean 64.745
Scale 2.165
stdev 1.793
Z_min/Location 60.781/-35.1°Lat -56.9667°Lon
Z_max/Location 68.219/ -34.2333°Lat -55.9°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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Topography (ETOPO2)
Santa Lucia Basin location map
Statistics - Topography (ETOPO2)
Median 17.500
Mean 18.055
Scale 48.185
stdev 36.719
Z_min/Location -42.000/-34.4667°Lat -57.2°Lon
Z_max/Location 131.000/ -34.4333°Lat -55.4333°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
Santa Lucia Basin location map
Statistics - Base hard sediments
Median -2.295
Mean -2.267
Scale 0.182
stdev 0.178
Z_min/Location -2.612/-34.7333°Lat -56.2667°Lon
Z_max/Location -1.804/ -34.7°Lat -57.7333°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
Santa Lucia Basin location map
Statistics - Temperature at 50km depth
Median 736.881
Mean 735.025
Scale 13.604
stdev 11.128
Z_min/Location 705.800/-34.7°Lat -57.7333°Lon
Z_max/Location 749.564/ -34.2333°Lat -55.8333°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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Laske sediment thickness
Santa Lucia Basin location map
Statistics - Laske sediment thickness
Median 1.105
Mean 1.355
Scale 0.488
stdev 0.618
Z_min/Location 0.679/-34.3°Lat -55.4°Lon
Z_max/Location 2.759/ -35.1°Lat -56.9667°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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Lithospheric temperature gradient
Santa Lucia Basin location map
Statistics - Lithospheric temperature gradient
Median 7.643
Mean 7.632
Scale 0.326
stdev 0.222
Z_min/Location 7.252/-35.0°Lat -57.0°Lon
Z_max/Location 7.955/ -34.2333°Lat -55.5333°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
Santa Lucia Basin location map
Statistics - Isostatic correction
Median 0.467
Mean 0.565
Scale 0.201
stdev 0.248
Z_min/Location 0.290/-34.3°Lat -55.4°Lon
Z_max/Location 1.119/-35.1°Lat -56.9667°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)
Santa Lucia Basin location map
Statistics - TTS (sediment)
Median 1.807
Mean 1.702
Scale 0.302
stdev 0.356
Z_min/Location 0.748/-34.7°Lat -57.7333°Lon
Z_max/Location 2.219/-34.6667°Lat -56.0667°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)
Santa Lucia Basin location map
Statistics - Beta (Sediment)
Median 1.301
Mean 1.282
Scale 0.067
stdev 0.072
Z_min/Location 1.106/-34.7°Lat -57.7333°Lon
Z_max/Location 1.396/-34.6667°Lat -56.0667°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.
Santa Lucia Basin location map
Statistics - Crustal vs lithosph. extn.
Median -0.039
Mean -0.038
Scale 0.078
stdev 0.055
Z_min/Location -0.137/-34.7°Lat -57.7333°Lon
Z_max/Location 0.046/-34.5667°Lat -55.7°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
Santa Lucia Basin location map
Statistics - Anomalous TTS
Median 2.298
Mean 2.224
Scale 0.497
stdev 0.466
Z_min/Location 1.223/-34.3°Lat -55.4°Lon
Z_max/Location 3.059/-34.5°Lat -57.3333°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
Santa Lucia Basin location map
Statistics - Predicted elevation
Median 1031.110
Mean 1024.890
Scale 260.640
stdev 187.779
Z_min/Location 736.685/-34.5°Lat -55.5°Lon
Z_max/Location 1351.650/-34.7°Lat -57.7333°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)
Santa Lucia Basin location map
Statistics - Beta (Crust)
Median 0.949
Mean 0.944
Scale 0.112
stdev 0.080
Z_min/Location 0.781/-34.7°Lat -57.7333°Lon
Z_max/Location 1.057/-34.5667°Lat -55.7°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)
Santa Lucia Basin location map
Statistics - TTS (crust)
Median -0.419
Mean -0.522
Scale 0.956
stdev 0.726
Z_min/Location -2.195/-34.7°Lat -57.7333°Lon
Z_max/Location 0.423/-34.5667°Lat -55.7°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
Santa Lucia Basin location map
Statistics - Differential Beta
Median 0.348
Mean 0.338
Scale 0.040
stdev 0.046
Z_min/Location 0.202/-34.3°Lat -55.4°Lon
Z_max/Location 0.414/-34.4667°Lat -57.1667°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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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