ICONS atlas: SAM - Chaco-Parana Basin

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Overview

This page bundles the available data for the Chaco-Parana 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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Chaco-Parana Basin location map
Basin name Chaco-Parana Basin
Region code SAM
Basin ID 2010
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.

Chaco-Parana Basin cross section
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Dynamic topography evolution for basin centroid
Chaco-Parana 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
Chaco-Parana Basin location map
Statistics - Mantle Lid thickness
Median 104.366
Mean 101.594
Scale 0.926
stdev 5.755
Z_min/Location 80.000/-32.0°Lat -54.0°Lon
Z_max/Location 105.141/ -25.0°Lat -61.0°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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Depth of 550 deg isotherm
Chaco-Parana Basin location map
Statistics - Depth of 550 deg isotherm
Median -41.990
Mean -41.434
Scale 0.015
stdev 1.116
Z_min/Location -42.001/-32.8°Lat -62.4667°Lon
Z_max/Location -37.000/ -32.0°Lat -54.0°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
Chaco-Parana Basin location map
Statistics - Mobil isopachs
Median 1.963
Mean 1.813
Scale 0.957
stdev 1.197
Z_min/Location -1.016/-23.0°Lat -56.9°Lon
Z_max/Location 6.613/ -24.5333°Lat -63.9333°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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Plain crustal thickness
Chaco-Parana Basin location map
Statistics - Plain crustal thickness
Median 38.996
Mean 39.023
Scale 0.749
stdev 1.004
Z_min/Location 32.498/-33.3°Lat -55.8°Lon
Z_max/Location 48.324/ -26.0°Lat -64.8°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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Base middle crust
Chaco-Parana Basin location map
Statistics - Base middle crust
Median -31.804
Mean -30.716
Scale 0.335
stdev 2.198
Z_min/Location -34.593/-26.0°Lat -64.8°Lon
Z_max/Location -22.921/ -33.3°Lat -55.8°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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Base lower crust
Chaco-Parana Basin location map
Statistics - Base lower crust
Median -40.867
Mean -40.486
Scale 0.186
stdev 0.935
Z_min/Location -48.385/-26.0°Lat -64.8°Lon
Z_max/Location -33.943/ -33.3°Lat -55.8°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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Total crustal thickness
Chaco-Parana Basin location map
Statistics - Total crustal thickness
Median 40.995
Mean 40.646
Scale 0.134
stdev 0.980
Z_min/Location 33.988/-33.3°Lat -55.8°Lon
Z_max/Location 49.784/ -26.0°Lat -64.8°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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Base upper crust
Chaco-Parana Basin location map
Statistics - Base upper crust
Median -16.780
Mean -16.271
Scale 0.458
stdev 1.133
Z_min/Location -18.000/-30.0333°Lat -60.2333°Lon
Z_max/Location -12.334/ -33.3°Lat -55.8°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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Thermal lithospheric thickness
Chaco-Parana Basin location map
Statistics - Thermal lithospheric thickness
Median 145.180
Mean 142.240
Scale 1.206
stdev 6.354
Z_min/Location 118.861/-32.3667°Lat -53.9333°Lon
Z_max/Location 146.001/ -28.2667°Lat -59.4333°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
Chaco-Parana Basin location map
Statistics - Heatflow
Median 69.789
Mean 68.860
Scale 5.075
stdev 4.608
Z_min/Location 56.292/-33.9333°Lat -63.6°Lon
Z_max/Location 77.183/ -20.7°Lat -59.6667°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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Topography (ETOPO2)
Chaco-Parana Basin location map
Statistics - Topography (ETOPO2)
Median 85.000
Mean 109.694
Scale 47.443
stdev 80.613
Z_min/Location -42.000/-33.4333°Lat -58.4333°Lon
Z_max/Location 1105.000/ -26.1333°Lat -64.7333°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 hard sediments
Chaco-Parana Basin location map
Statistics - Base hard sediments
Median -1.497
Mean -1.464
Scale 0.713
stdev 0.651
Z_min/Location -3.667/-21.7333°Lat -59.9°Lon
Z_max/Location 0.345/ -31.9333°Lat -64.3667°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
Chaco-Parana Basin location map
Statistics - Temperature at 50km depth
Median 659.914
Mean 670.226
Scale 1.355
stdev 20.499
Z_min/Location 658.993/-32.6667°Lat -61.2667°Lon
Z_max/Location 747.815/ -32.0667°Lat -53.7333°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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Laske sediment thickness
Chaco-Parana Basin location map
Statistics - Laske sediment thickness
Median 1.596
Mean 1.689
Scale 0.993
stdev 0.882
Z_min/Location 0.057/-32.7°Lat -55.9333°Lon
Z_max/Location 4.547/ -24.9°Lat -63.9667°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
Chaco-Parana Basin location map
Statistics - Lithospheric temperature gradient
Median 6.732
Mean 6.860
Scale 0.078
stdev 0.290
Z_min/Location 6.678/-27.4667°Lat -59.0°Lon
Z_max/Location 8.057/ -32.0°Lat -55.0°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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Computations

Isostatic correction
Chaco-Parana Basin location map
Statistics - Isostatic correction
Median 0.667
Mean 0.696
Scale 0.400
stdev 0.349
Z_min/Location 0.025/-32.7°Lat -55.9333°Lon
Z_max/Location 1.759/-24.9°Lat -63.9667°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)
Chaco-Parana Basin location map
Statistics - TTS (sediment)
Median 0.775
Mean 0.768
Scale 0.500
stdev 0.484
Z_min/Location -0.757/-24.9°Lat -64.2333°Lon
Z_max/Location 2.307/-21.6°Lat -59.9667°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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Beta (Sediment)
Chaco-Parana Basin location map
Statistics - Beta (Sediment)
Median 1.110
Mean 1.114
Scale 0.077
stdev 0.077
Z_min/Location 0.912/-24.9°Lat -64.2333°Lon
Z_max/Location 1.418/-21.6°Lat -59.9667°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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Crustal vs lithosph. extn.
Chaco-Parana Basin location map
Statistics - Crustal vs lithosph. extn.
Median 0.048
Mean 0.034
Scale 0.023
stdev 0.045
Z_min/Location -0.213/-26.0°Lat -64.8°Lon
Z_max/Location 0.106/-21.7667°Lat -59.8667°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
Chaco-Parana Basin location map
Statistics - Anomalous TTS
Median 0.561
Mean 0.574
Scale 0.431
stdev 0.424
Z_min/Location -0.452/-31.6°Lat -63.3333°Lon
Z_max/Location 1.774/-21.4333°Lat -59.9667°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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Predicted elevation
Chaco-Parana Basin location map
Statistics - Predicted elevation
Median 1137.740
Mean 1171.730
Scale 8.187
stdev 75.613
Z_min/Location 1035.060/-33.3°Lat -55.8°Lon
Z_max/Location 1651.770/-26.0°Lat -64.8°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)
Chaco-Parana Basin location map
Statistics - Beta (Crust)
Median 1.026
Mean 1.026
Scale 0.020
stdev 0.027
Z_min/Location 0.828/-26.0°Lat -64.8°Lon
Z_max/Location 1.231/-33.3°Lat -55.8°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)
Chaco-Parana Basin location map
Statistics - TTS (crust)
Median 0.199
Mean 0.194
Scale 0.146
stdev 0.196
Z_min/Location -1.624/-26.0°Lat -64.8°Lon
Z_max/Location 1.469/-33.3°Lat -55.8°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
Chaco-Parana Basin location map
Statistics - Differential Beta
Median 0.081
Mean 0.088
Scale 0.067
stdev 0.069
Z_min/Location -0.057/-31.6°Lat -63.3333°Lon
Z_max/Location 0.344/-21.5333°Lat -59.9667°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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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