ICONS atlas: SAM - Somuncura - Canadon Asfalto Basin

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Overview

This page bundles the available data for the Somuncura - Canadon Asfalto 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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Somuncura - Canadon Asfalto Basin location map
Basin name Somuncura - Canadon Asfalto Basin
Region code SAM
Basin ID 2540
Plate location/code compress foreland/CMF
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.

Somuncura - Canadon Asfalto Basin cross section
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Dynamic topography evolution for basin centroid
Somuncura - Canadon Asfalto 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
Somuncura - Canadon Asfalto Basin location map
Statistics - Mantle Lid thickness
Median 72.427
Mean 73.013
Scale 1.788
stdev 1.870
Z_min/Location 70.281/-41.6333°Lat -69.3333°Lon
Z_max/Location 77.243/ -44.3667°Lat -66.9°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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Depth of 550 deg isotherm
Somuncura - Canadon Asfalto Basin location map
Statistics - Depth of 550 deg isotherm
Median -35.000
Mean -35.093
Scale 0.001
stdev 0.245
Z_min/Location -36.359/-41.1667°Lat -70.4333°Lon
Z_max/Location -34.999/ -41.2333°Lat -66.5667°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
Somuncura - Canadon Asfalto Basin location map
Statistics - Mobil isopachs
Median -0.744
Mean -0.726
Scale 0.466
stdev 0.456
Z_min/Location -1.564/-43.4333°Lat -67.0°Lon
Z_max/Location 1.044/ -44.3333°Lat -69.2333°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
Somuncura - Canadon Asfalto Basin location map
Statistics - Plain crustal thickness
Median 37.066
Mean 36.390
Scale 2.758
stdev 2.643
Z_min/Location 30.951/-44.6°Lat -67.0°Lon
Z_max/Location 40.461/ -41.4°Lat -69.7333°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
Somuncura - Canadon Asfalto Basin location map
Statistics - Base middle crust
Median -25.017
Mean -24.677
Scale 1.449
stdev 1.527
Z_min/Location -27.494/-41.4333°Lat -69.8333°Lon
Z_max/Location -21.389/ -44.3°Lat -69.2667°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 lower crust
Somuncura - Canadon Asfalto Basin location map
Statistics - Base lower crust
Median -36.975
Mean -36.440
Scale 1.913
stdev 1.934
Z_min/Location -39.580/-41.4667°Lat -69.7333°Lon
Z_max/Location -32.420/ -44.3667°Lat -66.9°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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Total crustal thickness
Somuncura - Canadon Asfalto Basin location map
Statistics - Total crustal thickness
Median 37.685
Mean 37.187
Scale 2.151
stdev 2.087
Z_min/Location 32.761/-44.3667°Lat -66.9°Lon
Z_max/Location 40.607/ -41.4333°Lat -69.7333°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
Somuncura - Canadon Asfalto Basin location map
Statistics - Base upper crust
Median -11.016
Mean -11.047
Scale 0.802
stdev 0.627
Z_min/Location -12.174/-41.7667°Lat -66.7°Lon
Z_max/Location -9.950/ -40.8333°Lat -69.9333°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
Somuncura - Canadon Asfalto Basin location map
Statistics - Thermal lithospheric thickness
Median 110.000
Mean 110.199
Scale 0.001
stdev 0.577
Z_min/Location 109.996/-41.2°Lat -66.5667°Lon
Z_max/Location 114.541/ -41.1667°Lat -70.4333°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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Heatflow
Somuncura - Canadon Asfalto Basin location map
Statistics - Heatflow
Median 76.943
Mean 76.358
Scale 1.000
stdev 1.711
Z_min/Location 69.717/-41.2333°Lat -65.9667°Lon
Z_max/Location 79.984/ -44.6333°Lat -67.0333°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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Topography (ETOPO2)
Somuncura - Canadon Asfalto Basin location map
Statistics - Topography (ETOPO2)
Median 900.000
Mean 785.331
Scale 437.367
stdev 386.037
Z_min/Location 42.000/-42.8667°Lat -66.7°Lon
Z_max/Location 1895.000/ -41.4°Lat -70.3°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 hard sediments
Somuncura - Canadon Asfalto Basin location map
Statistics - Base hard sediments
Median 0.068
Mean -0.049
Scale 0.846
stdev 0.733
Z_min/Location -1.603/-44.6°Lat -67.2667°Lon
Z_max/Location 1.001/ -40.6°Lat -69.3333°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
Somuncura - Canadon Asfalto Basin location map
Statistics - Temperature at 50km depth
Median 787.000
Mean 785.977
Scale 0.006
stdev 2.903
Z_min/Location 765.866/-41.1667°Lat -70.4333°Lon
Z_max/Location 787.015/ -41.2°Lat -66.5667°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
Somuncura - Canadon Asfalto Basin location map
Statistics - Laske sediment thickness
Median 0.179
Mean 0.259
Scale 0.125
stdev 0.211
Z_min/Location 0.030/-41.2°Lat -66.5667°Lon
Z_max/Location 1.441/ -44.3333°Lat -69.2333°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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Lithospheric temperature gradient
Somuncura - Canadon Asfalto Basin location map
Statistics - Lithospheric temperature gradient
Median 8.556
Mean 8.535
Scale 0.000
stdev 0.055
Z_min/Location 8.274/-41.1667°Lat -70.4333°Lon
Z_max/Location 8.556/ -41.3333°Lat -66.6°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
Somuncura - Canadon Asfalto Basin location map
Statistics - Isostatic correction
Median 0.078
Mean 0.111
Scale 0.054
stdev 0.090
Z_min/Location 0.013/-41.2°Lat -66.5667°Lon
Z_max/Location 0.604/-44.3333°Lat -69.2333°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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TTS (sediment)
Somuncura - Canadon Asfalto Basin location map
Statistics - TTS (sediment)
Median -0.138
Mean -0.062
Scale 0.809
stdev 0.714
Z_min/Location -1.140/-40.8667°Lat -69.6333°Lon
Z_max/Location 1.393/-44.6°Lat -67.2667°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)
Somuncura - Canadon Asfalto Basin location map
Statistics - Beta (Sediment)
Median 0.983
Mean 1.001
Scale 0.101
stdev 0.095
Z_min/Location 0.873/-40.8667°Lat -69.6333°Lon
Z_max/Location 1.217/-44.6°Lat -67.2667°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.
Somuncura - Canadon Asfalto Basin location map
Statistics - Crustal vs lithosph. extn.
Median 0.020
Mean 0.047
Scale 0.072
stdev 0.077
Z_min/Location -0.055/-41.5333°Lat -69.5667°Lon
Z_max/Location 0.222/-44.6°Lat -67.0°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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Anomalous TTS
Somuncura - Canadon Asfalto Basin location map
Statistics - Anomalous TTS
Median -0.339
Mean -0.356
Scale 0.301
stdev 0.249
Z_min/Location -1.248/-44.3°Lat -69.2667°Lon
Z_max/Location 0.037/-44.3667°Lat -67.6667°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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Predicted elevation
Somuncura - Canadon Asfalto Basin location map
Statistics - Predicted elevation
Median 1496.170
Mean 1446.140
Scale 151.419
stdev 155.324
Z_min/Location 1082.660/-44.3667°Lat -66.9°Lon
Z_max/Location 1668.690/-41.5667°Lat -69.6°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)
Somuncura - Canadon Asfalto Basin location map
Statistics - Beta (Crust)
Median 1.020
Mean 1.045
Scale 0.076
stdev 0.079
Z_min/Location 0.935/-41.4°Lat -69.7333°Lon
Z_max/Location 1.222/-44.6°Lat -67.0°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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TTS (crust)
Somuncura - Canadon Asfalto Basin location map
Statistics - TTS (crust)
Median 0.155
Mean 0.294
Scale 0.570
stdev 0.547
Z_min/Location -0.547/-41.4°Lat -69.7333°Lon
Z_max/Location 1.419/-44.6°Lat -67.0°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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Differential Beta
Somuncura - Canadon Asfalto Basin location map
Statistics - Differential Beta
Median -0.044
Mean -0.044
Scale 0.032
stdev 0.030
Z_min/Location -0.181/-44.3333°Lat -69.2333°Lon
Z_max/Location 0.007/-44.3667°Lat -67.6667°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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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