ICONS atlas: NAM - Dalhart Basin

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Overview

This page bundles the available data for the Dalhart 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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Dalhart Basin location map
Basin name Dalhart Basin
Region code NAM
Basin ID 1073
No. of rings 1
Basin size [km²] 8701.4
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.

Dalhart Basin cross section
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Dynamic topography evolution for basin centroid
Dalhart 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
Dalhart Basin location map
Statistics - Mantle Lid thickness
Median 91.964
Mean 92.074
Scale 1.775
stdev 1.559
Z_min/Location 89.243/36.2333°Lat -102.1°Lon
Z_max/Location 95.863/ 36.0333°Lat -103.167°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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Depth of 550 deg isotherm
Dalhart Basin location map
Statistics - Depth of 550 deg isotherm
Median -40.999
Mean -40.995
Scale 0.003
stdev 0.010
Z_min/Location -41.001/36.7°Lat -102.7°Lon
Z_max/Location -40.948/ 35.5°Lat -102.133°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
Dalhart Basin location map
Statistics - Mobil isopachs
Median 0.937
Mean 1.007
Scale 0.102
stdev 0.201
Z_min/Location 0.782/35.8667°Lat -102.9°Lon
Z_max/Location 1.692/ 35.4°Lat -102.233°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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Plain crustal thickness
Dalhart Basin location map
Statistics - Plain crustal thickness
Median 46.011
Mean 45.976
Scale 1.085
stdev 1.085
Z_min/Location 43.012/36.0333°Lat -103.167°Lon
Z_max/Location 48.294/ 36.3°Lat -102.133°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
Dalhart Basin location map
Statistics - Base middle crust
Median -38.430
Mean -38.299
Scale 1.536
stdev 1.346
Z_min/Location -40.700/36.2333°Lat -102.1°Lon
Z_max/Location -35.106/ 36.0333°Lat -103.167°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 lower crust
Dalhart Basin location map
Statistics - Base lower crust
Median -46.143
Mean -46.024
Scale 1.466
stdev 1.378
Z_min/Location -48.749/36.2333°Lat -102.1°Lon
Z_max/Location -42.498/ 36.0333°Lat -103.167°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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Total crustal thickness
Dalhart Basin location map
Statistics - Total crustal thickness
Median 47.558
Mean 47.440
Scale 1.345
stdev 1.296
Z_min/Location 44.039/36.0333°Lat -103.167°Lon
Z_max/Location 50.023/ 36.2333°Lat -102.1°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
Dalhart Basin location map
Statistics - Base upper crust
Median -20.263
Mean -20.213
Scale 0.484
stdev 0.390
Z_min/Location -20.799/35.5°Lat -102.133°Lon
Z_max/Location -19.227/ 36.7333°Lat -103.067°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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Thermal lithospheric thickness
Dalhart Basin location map
Statistics - Thermal lithospheric thickness
Median 139.626
Mean 139.513
Scale 0.355
stdev 0.356
Z_min/Location 138.564/35.5°Lat -102.133°Lon
Z_max/Location 140.000/ 36.0°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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Heatflow
Dalhart Basin location map
Statistics - Heatflow
Median 74.459
Mean 74.454
Scale 2.974
stdev 2.800
Z_min/Location 67.515/35.5°Lat -102.133°Lon
Z_max/Location 80.823/ 36.0333°Lat -103.167°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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Topography (ETOPO2)
Dalhart Basin location map
Statistics - Topography (ETOPO2)
Median 1250.000
Mean 1243.810
Scale 118.608
stdev 111.573
Z_min/Location 947.000/35.5°Lat -102.133°Lon
Z_max/Location 1490.000/ 36.7333°Lat -103.067°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 hard sediments
Dalhart Basin location map
Statistics - Base hard sediments
Median 0.020
Mean -0.048
Scale 0.602
stdev 0.496
Z_min/Location -1.200/35.4°Lat -102.233°Lon
Z_max/Location 0.794/ 36.7333°Lat -103.067°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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Temperature at 50km depth
Dalhart Basin location map
Statistics - Temperature at 50km depth
Median 676.041
Mean 676.428
Scale 0.941
stdev 1.172
Z_min/Location 675.000/36.0°Lat -103.0°Lon
Z_max/Location 680.075/ 35.4°Lat -102.233°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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Laske sediment thickness
Dalhart Basin location map
Statistics - Laske sediment thickness
Median 1.582
Mean 1.640
Scale 0.629
stdev 0.504
Z_min/Location 0.738/36.7333°Lat -103.067°Lon
Z_max/Location 2.716/ 35.4°Lat -102.233°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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Lithospheric temperature gradient
Dalhart Basin location map
Statistics - Lithospheric temperature gradient
Median 6.969
Mean 6.976
Scale 0.025
stdev 0.024
Z_min/Location 6.940/36.0°Lat -103.0°Lon
Z_max/Location 7.035/ 35.4°Lat -102.233°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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Computations

Beta (Crust)
Dalhart Basin location map
Statistics - Beta (Crust)
Median 1.005
Mean 1.007
Scale 0.024
stdev 0.024
Z_min/Location 0.958/36.3°Lat -102.133°Lon
Z_max/Location 1.076/36.0333°Lat -103.167°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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Isostatic correction
Dalhart Basin location map
Statistics - Isostatic correction
Median 0.661
Mean 0.681
Scale 0.253
stdev 0.201
Z_min/Location 0.315/36.7333°Lat -103.067°Lon
Z_max/Location 1.103/35.4°Lat -102.233°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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TTS (crust)
Dalhart Basin location map
Statistics - TTS (crust)
Median 0.043
Mean 0.049
Scale 0.183
stdev 0.183
Z_min/Location -0.343/36.3°Lat -102.133°Lon
Z_max/Location 0.550/36.0333°Lat -103.167°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)
Dalhart Basin location map
Statistics - TTS (sediment)
Median -0.676
Mean -0.633
Scale 0.349
stdev 0.297
Z_min/Location -1.108/36.7333°Lat -103.067°Lon
Z_max/Location 0.097/35.4°Lat -102.233°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)
Dalhart Basin location map
Statistics - Beta (Sediment)
Median 0.920
Mean 0.926
Scale 0.037
stdev 0.033
Z_min/Location 0.876/36.7333°Lat -103.067°Lon
Z_max/Location 1.013/35.4°Lat -102.233°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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Differential Beta
Dalhart Basin location map
Statistics - Differential Beta
Median -0.082
Mean -0.081
Scale 0.059
stdev 0.048
Z_min/Location -0.190/36.0333°Lat -103.167°Lon
Z_max/Location 0.013/35.5°Lat -102.133°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.
Dalhart Basin location map
Statistics - Crustal vs lithosph. extn.
Median 0.006
Mean 0.008
Scale 0.024
stdev 0.025
Z_min/Location -0.042/36.3°Lat -102.133°Lon
Z_max/Location 0.079/36.0333°Lat -103.167°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
Dalhart Basin location map
Statistics - Anomalous TTS
Median -0.707
Mean -0.682
Scale 0.526
stdev 0.407
Z_min/Location -1.561/36.0333°Lat -103.167°Lon
Z_max/Location 0.102/35.5°Lat -102.133°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
Dalhart Basin location map
Statistics - Predicted elevation
Median 1532.510
Mean 1524.350
Scale 45.206
stdev 43.726
Z_min/Location 1393.610/36.0333°Lat -103.167°Lon
Z_max/Location 1592.900/36.2333°Lat -102.1°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 2007-09-30 21:54:01 CEST | © Christian Heine, School of Geosciences, Sydney University, Australia