ICONS atlas: SAM - Las Salinas Basin

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Overview

This page bundles the available data for the Las Salinas 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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Las Salinas Basin location map
Basin name Las Salinas Basin
Region code SAM
Basin ID 2430
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.

Las Salinas Basin cross section
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Dynamic topography evolution for basin centroid
Las Salinas 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
Las Salinas Basin location map
Statistics - Mantle Lid thickness
Median 94.041
Mean 94.016
Scale 6.403
stdev 4.914
Z_min/Location 84.845/-30.1333°Lat -65.6333°Lon
Z_max/Location 102.532/ -28.5°Lat -63.5333°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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Depth of 550 deg isotherm
Las Salinas Basin location map
Statistics - Depth of 550 deg isotherm
Median -40.609
Mean -40.769
Scale 0.757
stdev 0.641
Z_min/Location -42.000/-29.0°Lat -64.0°Lon
Z_max/Location -40.000/ -30.0°Lat -65.0°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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Mobil isopachs
Las Salinas Basin location map
Statistics - Mobil isopachs
Median 1.909
Mean 1.717
Scale 0.684
stdev 0.641
Z_min/Location 0.306/-29.7°Lat -65.4667°Lon
Z_max/Location 2.585/ -29.1667°Lat -64.2333°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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Plain crustal thickness
Las Salinas Basin location map
Statistics - Plain crustal thickness
Median 42.191
Mean 42.568
Scale 2.274
stdev 1.926
Z_min/Location 39.944/-28.5°Lat -63.5333°Lon
Z_max/Location 47.051/ -30.6333°Lat -65.5°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 middle crust
Las Salinas Basin location map
Statistics - Base middle crust
Median -31.299
Mean -31.335
Scale 0.190
stdev 0.159
Z_min/Location -31.649/-30.6667°Lat -65.4667°Lon
Z_max/Location -31.104/ -29.8667°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 lower crust
Las Salinas Basin location map
Statistics - Base lower crust
Median -42.773
Mean -43.120
Scale 2.814
stdev 2.211
Z_min/Location -47.860/-30.1333°Lat -65.6333°Lon
Z_max/Location -40.365/ -28.6667°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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Total crustal thickness
Las Salinas Basin location map
Statistics - Total crustal thickness
Median 43.406
Mean 43.702
Scale 2.896
stdev 2.261
Z_min/Location 40.701/-28.5°Lat -63.5333°Lon
Z_max/Location 48.478/ -30.1333°Lat -65.6333°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
Las Salinas Basin location map
Statistics - Base upper crust
Median -15.884
Mean -15.894
Scale 0.164
stdev 0.140
Z_min/Location -16.228/-29.6333°Lat -64.2333°Lon
Z_max/Location -15.641/ -28.1°Lat -64.0°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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Thermal lithospheric thickness
Las Salinas Basin location map
Statistics - Thermal lithospheric thickness
Median 137.455
Mean 137.718
Scale 3.364
stdev 2.698
Z_min/Location 133.323/-30.1333°Lat -65.6333°Lon
Z_max/Location 143.233/ -28.5°Lat -63.5333°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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Heatflow
Las Salinas Basin location map
Statistics - Heatflow
Median 69.859
Mean 69.951
Scale 10.509
stdev 8.364
Z_min/Location 58.173/-28.2°Lat -64.0333°Lon
Z_max/Location 89.482/ -30.0667°Lat -65.6333°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)
Las Salinas Basin location map
Statistics - Topography (ETOPO2)
Median 175.000
Mean 202.607
Scale 80.060
stdev 108.753
Z_min/Location 92.000/-29.3333°Lat -64.3°Lon
Z_max/Location 776.000/ -30.6°Lat -64.6333°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
Las Salinas Basin location map
Statistics - Base hard sediments
Median -0.506
Mean -0.553
Scale 0.381
stdev 0.328
Z_min/Location -1.301/-30.0667°Lat -65.6333°Lon
Z_max/Location -0.033/ -28.4667°Lat -64.1667°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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Temperature at 50km depth
Las Salinas Basin location map
Statistics - Temperature at 50km depth
Median 683.292
Mean 682.373
Scale 10.144
stdev 8.265
Z_min/Location 665.325/-28.4667°Lat -63.5333°Lon
Z_max/Location 695.881/ -30.1333°Lat -65.6333°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
Las Salinas Basin location map
Statistics - Laske sediment thickness
Median 1.126
Mean 1.240
Scale 0.439
stdev 0.408
Z_min/Location 0.514/-28.1°Lat -64.0°Lon
Z_max/Location 2.030/ -30.0°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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Lithospheric temperature gradient
Las Salinas Basin location map
Statistics - Lithospheric temperature gradient
Median 7.032
Mean 7.033
Scale 0.090
stdev 0.079
Z_min/Location 6.844/-28.4667°Lat -63.5333°Lon
Z_max/Location 7.188/ -30.1333°Lat -65.6333°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
Las Salinas Basin location map
Statistics - Isostatic correction
Median 0.476
Mean 0.521
Scale 0.180
stdev 0.166
Z_min/Location 0.220/-28.1°Lat -64.0°Lon
Z_max/Location 0.838/-30.0°Lat -65.1333°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)
Las Salinas Basin location map
Statistics - TTS (sediment)
Median -0.005
Mean 0.032
Scale 0.170
stdev 0.191
Z_min/Location -0.277/-28.7667°Lat -64.1333°Lon
Z_max/Location 0.581/-30.0667°Lat -65.6333°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)
Las Salinas Basin location map
Statistics - Beta (Sediment)
Median 0.999
Mean 1.005
Scale 0.022
stdev 0.025
Z_min/Location 0.966/-28.7667°Lat -64.1333°Lon
Z_max/Location 1.080/-30.0667°Lat -65.6333°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.
Las Salinas Basin location map
Statistics - Crustal vs lithosph. extn.
Median -0.017
Mean -0.022
Scale 0.082
stdev 0.062
Z_min/Location -0.147/-30.6333°Lat -65.5°Lon
Z_max/Location 0.079/-28.5°Lat -63.5333°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
Las Salinas Basin location map
Statistics - Anomalous TTS
Median 0.116
Mean 0.210
Scale 0.640
stdev 0.535
Z_min/Location -0.487/-28.8667°Lat -64.0333°Lon
Z_max/Location 1.501/-30.1333°Lat -65.6333°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
Las Salinas Basin location map
Statistics - Predicted elevation
Median 1405.220
Mean 1401.140
Scale 196.287
stdev 145.986
Z_min/Location 1158.330/-28.5°Lat -63.5333°Lon
Z_max/Location 1653.890/-30.1333°Lat -65.6333°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)
Las Salinas Basin location map
Statistics - Beta (Crust)
Median 0.987
Mean 0.980
Scale 0.054
stdev 0.043
Z_min/Location 0.885/-30.6333°Lat -65.5°Lon
Z_max/Location 1.042/-28.5°Lat -63.5333°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)
Las Salinas Basin location map
Statistics - TTS (crust)
Median -0.107
Mean -0.177
Scale 0.427
stdev 0.362
Z_min/Location -1.020/-30.6333°Lat -65.5°Lon
Z_max/Location 0.315/-28.5°Lat -63.5333°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
Las Salinas Basin location map
Statistics - Differential Beta
Median 0.015
Mean 0.025
Scale 0.080
stdev 0.066
Z_min/Location -0.062/-28.8667°Lat -64.0°Lon
Z_max/Location 0.185/-30.1333°Lat -65.6333°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