ICONS atlas: SAM - Amazonas Basin

Regional basin list

To view the data for individual basins, select a basin from the dropdown menu below or click the basin name in the overview table. This will open a separate page with detailed maps.

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Overview

This page bundles the available data for the Amazonas 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:

Amazonas Basin location map
Basin name Amazonas Basin
Region code SAM
Basin ID 2002
Plate location/code intra-cratonic/INC
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.

Amazonas Basin cross section
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Dynamic topography evolution for basin centroid
Amazonas 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
Amazonas Basin location map
Statistics - Mantle Lid thickness
Median 145.284
Mean 148.820
Scale 18.149
stdev 22.715
Z_min/Location 97.658/-3.7°Lat -48.3333°Lon
Z_max/Location 219.274/ -1.2°Lat -58.0667°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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Depth of 550 deg isotherm
Amazonas Basin location map
Statistics - Depth of 550 deg isotherm
Median -48.568
Mean -50.238
Scale 2.744
stdev 5.687
Z_min/Location -73.014/-1.2°Lat -58.0667°Lon
Z_max/Location -39.959/ -4.96667°Lat -48.9°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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Mobil isopachs
Amazonas Basin location map
Statistics - Mobil isopachs
Median 1.742
Mean 1.832
Scale 1.300
stdev 1.184
Z_min/Location -0.243/-0.666667°Lat -56.7667°Lon
Z_max/Location 4.525/ -3.03333°Lat -57.0667°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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Plain crustal thickness
Amazonas Basin location map
Statistics - Plain crustal thickness
Median 38.843
Mean 38.828
Scale 1.342
stdev 1.051
Z_min/Location 36.229/-0.466667°Lat -51.0667°Lon
Z_max/Location 41.390/ -0.633333°Lat -52.7°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 middle crust
Amazonas Basin location map
Statistics - Base middle crust
Median -31.274
Mean -30.165
Scale 1.736
stdev 2.532
Z_min/Location -33.627/-0.733333°Lat -52.6667°Lon
Z_max/Location -24.343/ -4.66667°Lat -57.0°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 lower crust
Amazonas Basin location map
Statistics - Base lower crust
Median -40.649
Mean -40.087
Scale 0.815
stdev 1.313
Z_min/Location -42.312/-0.666667°Lat -52.6667°Lon
Z_max/Location -36.553/ -4.3°Lat -55.6667°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
Amazonas Basin location map
Statistics - Total crustal thickness
Median 40.702
Mean 40.155
Scale 0.809
stdev 1.290
Z_min/Location 36.673/-4.3°Lat -55.6667°Lon
Z_max/Location 42.408/ -0.633333°Lat -52.6667°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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Base upper crust
Amazonas Basin location map
Statistics - Base upper crust
Median -16.782
Mean -16.216
Scale 1.338
stdev 1.556
Z_min/Location -18.326/-1.43333°Lat -56.6667°Lon
Z_max/Location -12.548/ -4.33333°Lat -55.7333°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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Thermal lithospheric thickness
Amazonas Basin location map
Statistics - Thermal lithospheric thickness
Median 185.098
Mean 188.975
Scale 17.410
stdev 23.009
Z_min/Location 135.684/-4.96667°Lat -48.9°Lon
Z_max/Location 260.601/ -1.2°Lat -58.0667°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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Heatflow
Amazonas Basin location map
Statistics - Heatflow
Median 47.660
Mean 48.578
Scale 1.573
stdev 2.444
Z_min/Location 46.011/-3.8°Lat -62.1333°Lon
Z_max/Location 57.648/ -0.466667°Lat -51.0667°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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Topography (ETOPO2)
Amazonas Basin location map
Statistics - Topography (ETOPO2)
Median 56.000
Mean 62.494
Scale 48.926
stdev 48.242
Z_min/Location -32.000/-0.533333°Lat -51.4667°Lon
Z_max/Location 391.000/ -0.766667°Lat -53.1667°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
Amazonas Basin location map
Statistics - Base hard sediments
Median -1.018
Mean -1.259
Scale 0.749
stdev 0.852
Z_min/Location -3.206/-1.96667°Lat -57.0°Lon
Z_max/Location 0.331/ -4.33333°Lat -55.7333°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
Amazonas Basin location map
Statistics - Temperature at 50km depth
Median 575.281
Mean 571.542
Scale 25.930
stdev 39.800
Z_min/Location 459.421/-1.2°Lat -58.0667°Lon
Z_max/Location 691.974/ -4.96667°Lat -48.9°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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Laske sediment thickness
Amazonas Basin location map
Statistics - Laske sediment thickness
Median 1.515
Mean 1.670
Scale 1.266
stdev 1.123
Z_min/Location -0.070/-3.33333°Lat -50.2°Lon
Z_max/Location 4.502/ -2.96667°Lat -57.9667°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
Amazonas Basin location map
Statistics - Lithospheric temperature gradient
Median 5.292
Mean 5.310
Scale 0.530
stdev 0.565
Z_min/Location 4.082/-1.13333°Lat -57.8667°Lon
Z_max/Location 6.945/ -4.96667°Lat -48.9°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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Computations

Isostatic correction
Amazonas Basin location map
Statistics - Isostatic correction
Median 0.634
Mean 0.683
Scale 0.509
stdev 0.442
Z_min/Location 0.000/-3.0°Lat -50.4°Lon
Z_max/Location 1.744/-2.96667°Lat -57.9667°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)
Amazonas Basin location map
Statistics - TTS (sediment)
Median 0.420
Mean 0.576
Scale 0.454
stdev 0.584
Z_min/Location -0.440/-4.33333°Lat -55.7333°Lon
Z_max/Location 2.141/-1.63333°Lat -57.9°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)
Amazonas Basin location map
Statistics - Beta (Sediment)
Median 1.057
Mean 1.087
Scale 0.063
stdev 0.096
Z_min/Location 0.947/-4.33333°Lat -55.7333°Lon
Z_max/Location 1.377/-1.63333°Lat -57.9°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.
Amazonas Basin location map
Statistics - Crustal vs lithosph. extn.
Median -0.093
Mean -0.091
Scale 0.121
stdev 0.133
Z_min/Location -0.464/-3.7°Lat -48.3333°Lon
Z_max/Location 0.216/-1.2°Lat -58.0667°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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Anomalous TTS
Amazonas Basin location map
Statistics - Anomalous TTS
Median 0.612
Mean 0.630
Scale 0.629
stdev 0.615
Z_min/Location -0.779/-4.33333°Lat -55.7333°Lon
Z_max/Location 2.103/-1.46667°Lat -57.9333°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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Predicted elevation
Amazonas Basin location map
Statistics - Predicted elevation
Median 403.329
Mean 340.061
Scale 350.188
stdev 395.617
Z_min/Location -927.807/-1.2°Lat -58.0667°Lon
Z_max/Location 1184.700/-3.0°Lat -49.0°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)
Amazonas Basin location map
Statistics - Beta (Crust)
Median 0.993
Mean 0.994
Scale 0.034
stdev 0.027
Z_min/Location 0.932/-0.633333°Lat -52.7°Lon
Z_max/Location 1.064/-0.466667°Lat -51.0667°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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TTS (crust)
Amazonas Basin location map
Statistics - TTS (crust)
Median -0.057
Mean -0.054
Scale 0.272
stdev 0.213
Z_min/Location -0.574/-0.633333°Lat -52.7°Lon
Z_max/Location 0.473/-0.466667°Lat -51.0667°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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Differential Beta
Amazonas Basin location map
Statistics - Differential Beta
Median 0.081
Mean 0.093
Scale 0.088
stdev 0.099
Z_min/Location -0.099/-4.33333°Lat -55.7333°Lon
Z_max/Location 0.371/-1.56667°Lat -57.9333°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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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