ICONS atlas: NAM - Sedgwick Basin

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Overview

This page bundles the available data for the Sedgwick Basin in the North 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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Sedgwick Basin location map
Basin name Sedgwick Basin
Region code NAM
Basin ID 1074
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.

Sedgwick Basin cross section
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Dynamic topography evolution for basin centroid
Sedgwick 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
Sedgwick Basin location map
Statistics - Mantle Lid thickness
Median 93.397
Mean 93.323
Scale 0.413
stdev 0.365
Z_min/Location 92.557/38.8667°Lat -97.3667°Lon
Z_max/Location 94.000/ 37.0°Lat -98.0°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
Sedgwick Basin location map
Statistics - Depth of 550 deg isotherm
Median -41.000
Mean -40.997
Scale 0.000
stdev 0.006
Z_min/Location -41.000/38.8667°Lat -97.3667°Lon
Z_max/Location -40.950/ 36.2333°Lat -97.7333°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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Mobil isopachs
Sedgwick Basin location map
Statistics - Mobil isopachs
Median 0.864
Mean 0.880
Scale 0.131
stdev 0.140
Z_min/Location 0.664/37.3333°Lat -98.6667°Lon
Z_max/Location 1.605/ 36.2333°Lat -97.7667°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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Plain crustal thickness
Sedgwick Basin location map
Statistics - Plain crustal thickness
Median 42.528
Mean 42.522
Scale 0.792
stdev 0.679
Z_min/Location 41.147/36.2667°Lat -97.8°Lon
Z_max/Location 44.019/ 39.0333°Lat -97.0°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 middle crust
Sedgwick Basin location map
Statistics - Base middle crust
Median -34.663
Mean -34.760
Scale 0.257
stdev 0.291
Z_min/Location -35.536/36.2333°Lat -97.7333°Lon
Z_max/Location -34.378/ 37.2667°Lat -98.7333°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
Sedgwick Basin location map
Statistics - Base lower crust
Median -45.517
Mean -45.512
Scale 0.081
stdev 0.104
Z_min/Location -45.875/39.0333°Lat -97.0°Lon
Z_max/Location -45.186/ 37.1333°Lat -98.7333°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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Total crustal thickness
Sedgwick Basin location map
Statistics - Total crustal thickness
Median 46.004
Mean 46.009
Scale 0.033
stdev 0.067
Z_min/Location 45.799/37.1333°Lat -98.7333°Lon
Z_max/Location 46.325/ 39.0333°Lat -97.0°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 upper crust
Sedgwick Basin location map
Statistics - Base upper crust
Median -18.682
Mean -18.699
Scale 0.427
stdev 0.400
Z_min/Location -19.527/36.2333°Lat -97.7667°Lon
Z_max/Location -17.820/ 39.0333°Lat -97.0°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
Sedgwick Basin location map
Statistics - Thermal lithospheric thickness
Median 139.408
Mean 139.332
Scale 0.367
stdev 0.335
Z_min/Location 138.657/38.4667°Lat -97.8333°Lon
Z_max/Location 140.000/ 37.0°Lat -98.0°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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Heatflow
Sedgwick Basin location map
Statistics - Heatflow
Median 53.489
Mean 53.265
Scale 0.236
stdev 0.529
Z_min/Location 51.151/39.0333°Lat -97.0°Lon
Z_max/Location 53.796/ 37.7667°Lat -98.3333°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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Topography (ETOPO2)
Sedgwick Basin location map
Statistics - Topography (ETOPO2)
Median 419.500
Mean 416.727
Scale 58.563
stdev 51.191
Z_min/Location 300.000/36.7°Lat -97.6333°Lon
Z_max/Location 542.000/ 37.3667°Lat -98.5°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 hard sediments
Sedgwick Basin location map
Statistics - Base hard sediments
Median -2.950
Mean -2.990
Scale 0.783
stdev 0.661
Z_min/Location -4.463/36.2333°Lat -97.7667°Lon
Z_max/Location -1.856/ 39.0333°Lat -97.0°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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Temperature at 50km depth
Sedgwick Basin location map
Statistics - Temperature at 50km depth
Median 676.972
Mean 677.261
Scale 1.132
stdev 1.160
Z_min/Location 675.000/37.0°Lat -98.0°Lon
Z_max/Location 680.012/ 39.0333°Lat -97.0667°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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Laske sediment thickness
Sedgwick Basin location map
Statistics - Laske sediment thickness
Median 2.676
Mean 2.986
Scale 0.885
stdev 1.017
Z_min/Location 1.690/39.0333°Lat -97.0°Lon
Z_max/Location 6.549/ 36.2333°Lat -97.7667°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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Lithospheric temperature gradient
Sedgwick Basin location map
Statistics - Lithospheric temperature gradient
Median 6.979
Mean 6.980
Scale 0.018
stdev 0.015
Z_min/Location 6.923/39.0°Lat -97.0°Lon
Z_max/Location 7.014/ 38.0°Lat -98.0°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
Sedgwick Basin location map
Statistics - Isostatic correction
Median 1.087
Mean 1.193
Scale 0.339
stdev 0.367
Z_min/Location 0.704/39.0333°Lat -97.0°Lon
Z_max/Location 2.398/36.2333°Lat -97.7667°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)
Sedgwick Basin location map
Statistics - TTS (sediment)
Median 1.781
Mean 1.797
Scale 0.433
stdev 0.340
Z_min/Location 1.152/39.0333°Lat -97.0°Lon
Z_max/Location 2.349/36.8667°Lat -97.7°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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Beta (Sediment)
Sedgwick Basin location map
Statistics - Beta (Sediment)
Median 1.295
Mean 1.303
Scale 0.092
stdev 0.074
Z_min/Location 1.173/39.0333°Lat -97.0°Lon
Z_max/Location 1.429/36.8667°Lat -97.7°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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Crustal vs lithosph. extn.
Sedgwick Basin location map
Statistics - Crustal vs lithosph. extn.
Median 0.009
Mean 0.008
Scale 0.022
stdev 0.018
Z_min/Location -0.029/39.0333°Lat -97.0°Lon
Z_max/Location 0.040/36.3667°Lat -97.8667°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
Sedgwick Basin location map
Statistics - Anomalous TTS
Median 1.725
Mean 1.745
Scale 0.287
stdev 0.235
Z_min/Location 1.339/37.2667°Lat -98.7333°Lon
Z_max/Location 2.170/36.9°Lat -97.6°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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Predicted elevation
Sedgwick Basin location map
Statistics - Predicted elevation
Median 1483.160
Mean 1484.200
Scale 7.069
stdev 6.977
Z_min/Location 1470.780/37.1333°Lat -98.7333°Lon
Z_max/Location 1504.350/39.0333°Lat -97.0°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)
Sedgwick Basin location map
Statistics - Beta (Crust)
Median 1.007
Mean 1.007
Scale 0.019
stdev 0.016
Z_min/Location 0.973/39.0333°Lat -97.0°Lon
Z_max/Location 1.040/36.2667°Lat -97.8°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)
Sedgwick Basin location map
Statistics - TTS (crust)
Median 0.051
Mean 0.052
Scale 0.145
stdev 0.124
Z_min/Location -0.221/39.0333°Lat -97.0°Lon
Z_max/Location 0.304/36.2667°Lat -97.8°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
Sedgwick Basin location map
Statistics - Differential Beta
Median 0.288
Mean 0.296
Scale 0.073
stdev 0.060
Z_min/Location 0.200/39.0333°Lat -97.0667°Lon
Z_max/Location 0.405/36.9°Lat -97.6667°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 02:36:48 CEST | © Christian Heine, School of Geosciences, Sydney University, Australia