ICONS atlas: ARC - Hudson Strait - Ungava Bay Basin

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Overview

This page bundles the available data for the Hudson Strait - Ungava Bay Basin in the NAM Arctic Basins. 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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Hudson Strait - Ungava Bay Basin location map
Basin name Hudson Strait - Ungava Bay Basin
Region code ARC
Basin ID 1541
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.

Hudson Strait - Ungava Bay Basin cross section
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Dynamic topography evolution for basin centroid
Hudson Strait - Ungava Bay 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
Hudson Strait - Ungava Bay Basin location map
Statistics - Mantle Lid thickness
Median 132.101
Mean 135.908
Scale 1.849
stdev 6.946
Z_min/Location 130.149/61.8667°Lat -68.5°Lon
Z_max/Location 153.832/ 62.7667°Lat -73.7333°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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Depth of 550 deg isotherm
Hudson Strait - Ungava Bay Basin location map
Statistics - Depth of 550 deg isotherm
Median -46.017
Mean -46.939
Scale 0.091
stdev 1.430
Z_min/Location -50.782/62.7667°Lat -73.7333°Lon
Z_max/Location -45.949/ 60.1333°Lat -68.0°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
Hudson Strait - Ungava Bay Basin location map
Statistics - Mobil isopachs
Median 0.004
Mean 0.036
Scale 0.005
stdev 0.058
Z_min/Location -0.042/59.8333°Lat -68.2667°Lon
Z_max/Location 0.212/ 60.3667°Lat -66.2333°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
Hudson Strait - Ungava Bay Basin location map
Statistics - Plain crustal thickness
Median 38.195
Mean 38.027
Scale 0.572
stdev 0.572
Z_min/Location 36.822/59.8°Lat -66.9333°Lon
Z_max/Location 38.611/ 62.6667°Lat -73.3667°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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Base middle crust
Hudson Strait - Ungava Bay Basin location map
Statistics - Base middle crust
Median -25.804
Mean -25.699
Scale 0.275
stdev 0.330
Z_min/Location -26.123/61.7333°Lat -67.9333°Lon
Z_max/Location -24.873/ 59.7°Lat -67.8667°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
Hudson Strait - Ungava Bay Basin location map
Statistics - Base lower crust
Median -38.657
Mean -38.379
Scale 0.568
stdev 0.697
Z_min/Location -39.103/63.6°Lat -74.1333°Lon
Z_max/Location -36.791/ 59.7333°Lat -67.2°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
Hudson Strait - Ungava Bay Basin location map
Statistics - Total crustal thickness
Median 38.575
Mean 38.361
Scale 0.790
stdev 0.763
Z_min/Location 36.767/59.8°Lat -66.9333°Lon
Z_max/Location 39.148/ 62.6667°Lat -73.3667°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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Base upper crust
Hudson Strait - Ungava Bay Basin location map
Statistics - Base upper crust
Median -13.039
Mean -13.018
Scale 0.153
stdev 0.149
Z_min/Location -13.277/61.4°Lat -66.4667°Lon
Z_max/Location -12.656/ 62.2333°Lat -72.1°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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Thermal lithospheric thickness
Hudson Strait - Ungava Bay Basin location map
Statistics - Thermal lithospheric thickness
Median 169.823
Mean 174.303
Scale 1.218
stdev 7.389
Z_min/Location 168.871/60.6°Lat -68.5°Lon
Z_max/Location 192.978/ 62.7667°Lat -73.7333°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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Heatflow
Hudson Strait - Ungava Bay Basin location map
Statistics - Heatflow
Median 46.953
Mean 47.315
Scale 0.825
stdev 1.553
Z_min/Location 45.212/59.7333°Lat -68.0333°Lon
Z_max/Location 56.606/ 60.8667°Lat -65.1667°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)
Hudson Strait - Ungava Bay Basin location map
Statistics - Topography (ETOPO2)
Median -278.000
Mean -272.062
Scale 100.817
stdev 170.693
Z_min/Location -968.000/60.8667°Lat -65.7333°Lon
Z_max/Location 261.000/ 60.4333°Lat -68.1°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 hard sediments
Hudson Strait - Ungava Bay Basin location map
Statistics - Base hard sediments
Median -0.365
Mean -0.353
Scale 0.183
stdev 0.171
Z_min/Location -0.678/61.6333°Lat -67.4667°Lon
Z_max/Location 0.075/ 59.7667°Lat -68.1333°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
Hudson Strait - Ungava Bay Basin location map
Statistics - Temperature at 50km depth
Median 598.925
Mean 589.952
Scale 0.974
stdev 14.058
Z_min/Location 554.087/62.7667°Lat -73.7333°Lon
Z_max/Location 599.664/ 60.5°Lat -68.3333°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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Laske sediment thickness
Hudson Strait - Ungava Bay Basin location map
Statistics - Laske sediment thickness
Median 0.341
Mean 0.402
Scale 0.216
stdev 0.247
Z_min/Location -0.027/60.9333°Lat -69.0°Lon
Z_max/Location 1.154/ 61.8667°Lat -68.5°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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Lithospheric temperature gradient
Hudson Strait - Ungava Bay Basin location map
Statistics - Lithospheric temperature gradient
Median 5.853
Mean 5.735
Scale 0.054
stdev 0.192
Z_min/Location 5.296/62.7667°Lat -73.7333°Lon
Z_max/Location 5.895/ 60.6°Lat -68.5°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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Computations

Isostatic correction
Hudson Strait - Ungava Bay Basin location map
Statistics - Isostatic correction
Median 0.147
Mean 0.172
Scale 0.092
stdev 0.105
Z_min/Location 0.000/61.9333°Lat -71.3333°Lon
Z_max/Location 0.487/61.8667°Lat -68.5°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)
Hudson Strait - Ungava Bay Basin location map
Statistics - TTS (sediment)
Median 0.171
Mean 0.180
Scale 0.134
stdev 0.132
Z_min/Location -0.101/59.7333°Lat -68.0333°Lon
Z_max/Location 0.449/61.2667°Lat -65.9667°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)
Hudson Strait - Ungava Bay Basin location map
Statistics - Beta (Sediment)
Median 1.022
Mean 1.024
Scale 0.018
stdev 0.018
Z_min/Location 0.987/59.7333°Lat -68.0333°Lon
Z_max/Location 1.061/61.2667°Lat -65.9667°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.
Hudson Strait - Ungava Bay Basin location map
Statistics - Crustal vs lithosph. extn.
Median 0.023
Mean 0.033
Scale 0.024
stdev 0.032
Z_min/Location -0.007/62.0333°Lat -69.1°Lon
Z_max/Location 0.114/62.7667°Lat -73.7333°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
Hudson Strait - Ungava Bay Basin location map
Statistics - Anomalous TTS
Median 0.118
Mean 0.083
Scale 0.127
stdev 0.214
Z_min/Location -0.429/59.7°Lat -67.4333°Lon
Z_max/Location 0.438/63.2°Lat -74.2°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
Hudson Strait - Ungava Bay Basin location map
Statistics - Predicted elevation
Median 493.903
Mean 463.922
Scale 84.630
stdev 105.210
Z_min/Location 185.208/62.7667°Lat -73.7333°Lon
Z_max/Location 598.214/62.1°Lat -69.3°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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Beta (Crust)
Hudson Strait - Ungava Bay Basin location map
Statistics - Beta (Crust)
Median 1.008
Mean 1.013
Scale 0.015
stdev 0.015
Z_min/Location 0.997/62.6667°Lat -73.3667°Lon
Z_max/Location 1.046/59.8°Lat -66.9333°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)
Hudson Strait - Ungava Bay Basin location map
Statistics - TTS (crust)
Median 0.063
Mean 0.097
Scale 0.116
stdev 0.116
Z_min/Location -0.021/62.6667°Lat -73.3667°Lon
Z_max/Location 0.342/59.8°Lat -66.9333°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
Hudson Strait - Ungava Bay Basin location map
Statistics - Differential Beta
Median 0.015
Mean 0.011
Scale 0.017
stdev 0.029
Z_min/Location -0.057/59.7°Lat -67.4333°Lon
Z_max/Location 0.059/63.2°Lat -74.2°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 02:36:51 CEST | © Christian Heine, School of Geosciences, Sydney University, Australia