ICONS atlas: NAM - Williston Basin

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Overview

This page bundles the available data for the Williston 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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Williston Basin location map
Basin name Williston Basin
Region code NAM
Basin ID 1022
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.

Williston Basin cross section
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Dynamic topography evolution for basin centroid
Williston 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
Williston Basin location map
Statistics - Mantle Lid thickness
Median 109.127
Mean 111.835
Scale 13.604
stdev 13.378
Z_min/Location 90.000/44.0°Lat -103.0°Lon
Z_max/Location 150.000/ 50.0°Lat -106.0°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
Williston Basin location map
Statistics - Depth of 550 deg isotherm
Median -44.184
Mean -44.581
Scale 2.279
stdev 2.279
Z_min/Location -52.000/50.0°Lat -106.0°Lon
Z_max/Location -40.000/ 44.0°Lat -103.0°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
Williston Basin location map
Statistics - Mobil isopachs
Median 2.544
Mean 2.530
Scale 1.781
stdev 1.221
Z_min/Location 0.395/46.9333°Lat -98.0667°Lon
Z_max/Location 4.538/ 47.3667°Lat -103.433°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
Williston Basin location map
Statistics - Plain crustal thickness
Median 45.201
Mean 45.696
Scale 0.454
stdev 1.197
Z_min/Location 43.102/46.5667°Lat -105.867°Lon
Z_max/Location 50.222/ 47.6667°Lat -108.233°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
Williston Basin location map
Statistics - Base middle crust
Median -33.396
Mean -34.383
Scale 1.932
stdev 2.782
Z_min/Location -41.803/45.8333°Lat -103.0°Lon
Z_max/Location -31.473/ 48.7°Lat -104.4°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
Williston Basin location map
Statistics - Base lower crust
Median -47.397
Mean -47.503
Scale 1.048
stdev 1.153
Z_min/Location -50.407/47.7°Lat -108.067°Lon
Z_max/Location -44.655/ 43.9°Lat -102.8°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
Williston Basin location map
Statistics - Total crustal thickness
Median 48.142
Mean 48.307
Scale 1.044
stdev 1.215
Z_min/Location 45.741/45.5667°Lat -99.6667°Lon
Z_max/Location 51.587/ 47.7°Lat -108.067°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
Williston Basin location map
Statistics - Base upper crust
Median -17.525
Mean -18.077
Scale 0.542
stdev 1.160
Z_min/Location -21.356/46.0°Lat -102.633°Lon
Z_max/Location -16.719/ 43.9667°Lat -101.833°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
Williston Basin location map
Statistics - Thermal lithospheric thickness
Median 157.574
Mean 160.142
Scale 12.445
stdev 12.941
Z_min/Location 136.000/44.0°Lat -103.0°Lon
Z_max/Location 198.000/ 50.0°Lat -106.0°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
Williston Basin location map
Statistics - Heatflow
Median 49.078
Mean 49.896
Scale 4.653
stdev 4.053
Z_min/Location 44.671/46.1°Lat -99.7333°Lon
Z_max/Location 67.493/ 47.4333°Lat -109.433°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)
Williston Basin location map
Statistics - Topography (ETOPO2)
Median 654.000
Mean 666.066
Scale 146.777
stdev 140.975
Z_min/Location 360.000/49.9°Lat -100.4°Lon
Z_max/Location 1533.000/ 47.2667°Lat -109.167°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
Williston Basin location map
Statistics - Base hard sediments
Median -2.070
Mean -1.807
Scale 0.911
stdev 0.841
Z_min/Location -3.293/48.3°Lat -101.867°Lon
Z_max/Location 0.639/ 47.3°Lat -109.267°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
Williston Basin location map
Statistics - Temperature at 50km depth
Median 628.813
Mean 624.942
Scale 31.337
stdev 30.237
Z_min/Location 543.000/50.0°Lat -106.0°Lon
Z_max/Location 688.000/ 44.0°Lat -103.0°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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Laske sediment thickness
Williston Basin location map
Statistics - Laske sediment thickness
Median 2.782
Mean 2.710
Scale 0.969
stdev 0.914
Z_min/Location 0.686/45.0333°Lat -103.533°Lon
Z_max/Location 4.454/ 48.7333°Lat -103.0°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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Lithospheric temperature gradient
Williston Basin location map
Statistics - Lithospheric temperature gradient
Median 6.193
Mean 6.174
Scale 0.444
stdev 0.405
Z_min/Location 5.137/50.0°Lat -106.0°Lon
Z_max/Location 7.058/ 44.0°Lat -102.0°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
Williston Basin location map
Statistics - Isostatic correction
Median 1.128
Mean 1.092
Scale 0.363
stdev 0.347
Z_min/Location 0.293/45.0333°Lat -103.533°Lon
Z_max/Location 1.728/48.7333°Lat -103.0°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 (sediment)
Williston Basin location map
Statistics - TTS (sediment)
Median 0.833
Mean 0.715
Scale 0.688
stdev 0.582
Z_min/Location -1.237/47.3°Lat -109.267°Lon
Z_max/Location 1.797/49.7667°Lat -100.233°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)
Williston Basin location map
Statistics - Beta (Sediment)
Median 1.119
Mean 1.108
Scale 0.107
stdev 0.090
Z_min/Location 0.863/47.3°Lat -109.267°Lon
Z_max/Location 1.298/49.7667°Lat -100.233°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.
Williston Basin location map
Statistics - Crustal vs lithosph. extn.
Median -0.021
Mean -0.018
Scale 0.109
stdev 0.091
Z_min/Location -0.217/47.1333°Lat -108.0°Lon
Z_max/Location 0.194/50.0°Lat -106.0°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
Williston Basin location map
Statistics - Anomalous TTS
Median 0.815
Mean 0.796
Scale 0.460
stdev 0.508
Z_min/Location -0.704/47.3°Lat -109.267°Lon
Z_max/Location 1.808/48.3667°Lat -101.433°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
Williston Basin location map
Statistics - Predicted elevation
Median 1266.070
Mean 1214.440
Scale 233.961
stdev 228.687
Z_min/Location 551.186/50.0°Lat -106.0°Lon
Z_max/Location 1566.890/47.0°Lat -107.0°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)
Williston Basin location map
Statistics - Beta (Crust)
Median 1.001
Mean 0.990
Scale 0.010
stdev 0.025
Z_min/Location 0.901/47.6667°Lat -108.233°Lon
Z_max/Location 1.049/46.5667°Lat -105.867°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)
Williston Basin location map
Statistics - TTS (crust)
Median 0.005
Mean -0.081
Scale 0.078
stdev 0.207
Z_min/Location -0.863/47.6667°Lat -108.233°Lon
Z_max/Location 0.368/46.5667°Lat -105.867°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
Williston Basin location map
Statistics - Differential Beta
Median 0.116
Mean 0.118
Scale 0.077
stdev 0.082
Z_min/Location -0.073/47.3°Lat -109.267°Lon
Z_max/Location 0.295/48.4667°Lat -101.3°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