ICONS atlas: SAM - Mercedes Basin

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Overview

This page bundles the available data for the Mercedes 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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Mercedes Basin location map
Basin name Mercedes Basin
Region code SAM
Basin ID 2260
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.

Mercedes Basin cross section
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Dynamic topography evolution for basin centroid
Mercedes 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
Mercedes Basin location map
Statistics - Mantle Lid thickness
Median 94.578
Mean 94.705
Scale 0.896
stdev 0.945
Z_min/Location 92.775/-33.3667°Lat -65.3333°Lon
Z_max/Location 97.140/ -34.5°Lat -64.7°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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Depth of 550 deg isotherm
Mercedes Basin location map
Statistics - Depth of 550 deg isotherm
Median -40.578
Mean -40.592
Scale 0.351
stdev 0.274
Z_min/Location -41.161/-34.1°Lat -64.7333°Lon
Z_max/Location -40.153/ -34.8333°Lat -65.5333°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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Mobil isopachs
Mercedes Basin location map
Statistics - Mobil isopachs
Median 0.602
Mean 0.605
Scale 0.426
stdev 0.389
Z_min/Location -0.151/-33.3333°Lat -65.2667°Lon
Z_max/Location 1.721/ -34.5°Lat -64.7°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
Mercedes Basin location map
Statistics - Plain crustal thickness
Median 39.783
Mean 40.020
Scale 0.423
stdev 0.643
Z_min/Location 39.326/-34.6667°Lat -65.6667°Lon
Z_max/Location 42.184/ -33.3333°Lat -65.2667°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
Mercedes Basin location map
Statistics - Base middle crust
Median -31.701
Mean -31.720
Scale 0.079
stdev 0.106
Z_min/Location -32.074/-33.3333°Lat -65.2667°Lon
Z_max/Location -31.551/ -34.4667°Lat -65.7333°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 lower crust
Mercedes Basin location map
Statistics - Base lower crust
Median -40.559
Mean -40.725
Scale 0.368
stdev 0.512
Z_min/Location -42.431/-33.3333°Lat -65.2667°Lon
Z_max/Location -40.093/ -34.5667°Lat -65.7°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
Mercedes Basin location map
Statistics - Total crustal thickness
Median 40.821
Mean 41.013
Scale 0.360
stdev 0.530
Z_min/Location 40.414/-34.6667°Lat -65.6667°Lon
Z_max/Location 42.785/ -33.3333°Lat -65.2667°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
Mercedes Basin location map
Statistics - Base upper crust
Median -16.727
Mean -16.713
Scale 0.072
stdev 0.075
Z_min/Location -16.818/-34.5667°Lat -64.7333°Lon
Z_max/Location -16.442/ -33.3333°Lat -65.0333°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
Mercedes Basin location map
Statistics - Thermal lithospheric thickness
Median 135.622
Mean 135.718
Scale 0.882
stdev 0.834
Z_min/Location 134.393/-34.3667°Lat -65.7667°Lon
Z_max/Location 137.941/ -34.4667°Lat -64.7°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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Heatflow
Mercedes Basin location map
Statistics - Heatflow
Median 60.257
Mean 60.507
Scale 1.381
stdev 1.236
Z_min/Location 58.449/-34.2333°Lat -64.7°Lon
Z_max/Location 63.261/ -33.7667°Lat -65.7°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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Topography (ETOPO2)
Mercedes Basin location map
Statistics - Topography (ETOPO2)
Median 375.000
Mean 393.174
Scale 99.334
stdev 103.044
Z_min/Location 224.000/-34.5°Lat -64.7°Lon
Z_max/Location 750.000/ -33.4°Lat -65.1333°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
Mercedes Basin location map
Statistics - Base hard sediments
Median -0.758
Mean -0.705
Scale 0.087
stdev 0.135
Z_min/Location -0.829/-34.6333°Lat -64.9667°Lon
Z_max/Location -0.247/ -33.3333°Lat -65.2667°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
Mercedes Basin location map
Statistics - Temperature at 50km depth
Median 688.762
Mean 688.499
Scale 2.975
stdev 2.741
Z_min/Location 681.591/-34.3°Lat -64.7°Lon
Z_max/Location 693.252/ -34.0333°Lat -65.8°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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Laske sediment thickness
Mercedes Basin location map
Statistics - Laske sediment thickness
Median 0.850
Mean 0.834
Scale 0.123
stdev 0.107
Z_min/Location 0.596/-34.7667°Lat -65.0°Lon
Z_max/Location 1.073/ -34.6667°Lat -65.6667°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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Lithospheric temperature gradient
Mercedes Basin location map
Statistics - Lithospheric temperature gradient
Median 7.090
Mean 7.092
Scale 0.051
stdev 0.042
Z_min/Location 7.013/-34.2333°Lat -64.7°Lon
Z_max/Location 7.173/ -34.3667°Lat -65.7667°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
Mercedes Basin location map
Statistics - Isostatic correction
Median 0.362
Mean 0.355
Scale 0.051
stdev 0.045
Z_min/Location 0.255/-34.7667°Lat -65.0°Lon
Z_max/Location 0.454/-34.6667°Lat -65.6667°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 (sediment)
Mercedes Basin location map
Statistics - TTS (sediment)
Median 0.373
Mean 0.350
Scale 0.100
stdev 0.125
Z_min/Location -0.019/-33.3333°Lat -65.2667°Lon
Z_max/Location 0.572/-34.7667°Lat -65.0°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 (Sediment)
Mercedes Basin location map
Statistics - Beta (Sediment)
Median 1.050
Mean 1.047
Scale 0.014
stdev 0.017
Z_min/Location 0.998/-33.3333°Lat -65.2667°Lon
Z_max/Location 1.079/-34.7667°Lat -65.0°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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Crustal vs lithosph. extn.
Mercedes Basin location map
Statistics - Crustal vs lithosph. extn.
Median 0.000
Mean -0.005
Scale 0.012
stdev 0.016
Z_min/Location -0.057/-33.3667°Lat -65.3333°Lon
Z_max/Location 0.018/-34.5°Lat -64.7°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
Mercedes Basin location map
Statistics - Anomalous TTS
Median 0.398
Mean 0.406
Scale 0.048
stdev 0.055
Z_min/Location 0.236/-34.6667°Lat -65.6667°Lon
Z_max/Location 0.542/-34.7667°Lat -65.0°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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Predicted elevation
Mercedes Basin location map
Statistics - Predicted elevation
Median 1291.830
Mean 1302.950
Scale 24.249
stdev 32.404
Z_min/Location 1254.220/-34.5°Lat -64.7°Lon
Z_max/Location 1403.770/-33.3667°Lat -65.3333°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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Beta (Crust)
Mercedes Basin location map
Statistics - Beta (Crust)
Median 0.999
Mean 0.993
Scale 0.011
stdev 0.016
Z_min/Location 0.942/-33.3333°Lat -65.2667°Lon
Z_max/Location 1.011/-34.6667°Lat -65.6667°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)
Mercedes Basin location map
Statistics - TTS (crust)
Median -0.008
Mean -0.055
Scale 0.083
stdev 0.126
Z_min/Location -0.481/-33.3333°Lat -65.2667°Lon
Z_max/Location 0.082/-34.6667°Lat -65.6667°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
Mercedes Basin location map
Statistics - Differential Beta
Median 0.053
Mean 0.054
Scale 0.007
stdev 0.008
Z_min/Location 0.032/-34.6667°Lat -65.6667°Lon
Z_max/Location 0.075/-34.7667°Lat -65.0°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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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