ICONS atlas: NAM - Maritimes Basin

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Overview

This page bundles the available data for the Maritimes 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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Maritimes Basin location map
Basin name Maritimes Basin
Region code NAM
Basin ID 1077
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.

Maritimes Basin cross section
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Dynamic topography evolution for basin centroid
Maritimes 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
Maritimes Basin location map
Statistics - Mantle Lid thickness
Median 74.393
Mean 74.406
Scale 3.915
stdev 3.551
Z_min/Location 67.525/48.2°Lat -61.0667°Lon
Z_max/Location 87.751/ 48.1°Lat -66.4667°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
Maritimes Basin location map
Statistics - Depth of 550 deg isotherm
Median -36.192
Mean -36.426
Scale 0.290
stdev 0.480
Z_min/Location -38.733/48.1°Lat -66.4667°Lon
Z_max/Location -35.989/ 48.3°Lat -60.0333°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
Maritimes Basin location map
Statistics - Mobil isopachs
Median 2.820
Mean 3.947
Scale 1.494
stdev 2.426
Z_min/Location 0.223/45.4667°Lat -61.5333°Lon
Z_max/Location 9.519/ 46.7333°Lat -62.3°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
Maritimes Basin location map
Statistics - Plain crustal thickness
Median 38.316
Mean 37.963
Scale 1.068
stdev 1.385
Z_min/Location 31.433/45.4667°Lat -61.5333°Lon
Z_max/Location 41.627/ 49.3333°Lat -64.3°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
Maritimes Basin location map
Statistics - Base middle crust
Median -32.013
Mean -32.603
Scale 1.490
stdev 2.130
Z_min/Location -37.539/48.2667°Lat -61.4333°Lon
Z_max/Location -24.943/ 48.2333°Lat -58.4333°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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Base lower crust
Maritimes Basin location map
Statistics - Base lower crust
Median -39.461
Mean -40.028
Scale 1.420
stdev 1.992
Z_min/Location -44.751/48.2°Lat -61.1333°Lon
Z_max/Location -34.194/ 46.0667°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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Total crustal thickness
Maritimes Basin location map
Statistics - Total crustal thickness
Median 39.535
Mean 40.055
Scale 1.396
stdev 1.974
Z_min/Location 34.062/45.4667°Lat -61.5333°Lon
Z_max/Location 44.694/ 48.2°Lat -61.1333°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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Base upper crust
Maritimes Basin location map
Statistics - Base upper crust
Median -19.684
Mean -19.405
Scale 0.786
stdev 1.610
Z_min/Location -22.484/48.2667°Lat -61.4333°Lon
Z_max/Location -13.617/ 48.5667°Lat -58.2333°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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Thermal lithospheric thickness
Maritimes Basin location map
Statistics - Thermal lithospheric thickness
Median 113.541
Mean 114.461
Scale 1.992
stdev 2.529
Z_min/Location 111.612/45.4667°Lat -61.9333°Lon
Z_max/Location 127.572/ 49.3333°Lat -64.3°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
Maritimes Basin location map
Statistics - Heatflow
Median 54.469
Mean 54.469
Scale 0.828
stdev 1.375
Z_min/Location 50.096/49.3333°Lat -64.3°Lon
Z_max/Location 59.040/ 45.5667°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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Topography (ETOPO2)
Maritimes Basin location map
Statistics - Topography (ETOPO2)
Median -36.000
Mean -43.465
Scale 59.304
stdev 133.828
Z_min/Location -526.000/47.6667°Lat -59.9°Lon
Z_max/Location 477.000/ 48.0°Lat -59.2°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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Base hard sediments
Maritimes Basin location map
Statistics - Base hard sediments
Median -1.584
Mean -2.065
Scale 1.877
stdev 1.971
Z_min/Location -7.086/48.0667°Lat -61.9°Lon
Z_max/Location 0.080/ 48.0333°Lat -64.7667°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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Temperature at 50km depth
Maritimes Basin location map
Statistics - Temperature at 50km depth
Median 769.848
Mean 766.524
Scale 8.513
stdev 9.979
Z_min/Location 721.056/48.1°Lat -66.4667°Lon
Z_max/Location 778.917/ 45.4667°Lat -61.8333°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
Maritimes Basin location map
Statistics - Laske sediment thickness
Median 2.661
Mean 3.050
Scale 2.556
stdev 2.311
Z_min/Location -0.073/46.2°Lat -66.4°Lon
Z_max/Location 9.147/ 47.1667°Lat -62.0°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
Maritimes Basin location map
Statistics - Lithospheric temperature gradient
Median 8.312
Mean 8.261
Scale 0.170
stdev 0.181
Z_min/Location 7.472/49.3333°Lat -64.3°Lon
Z_max/Location 8.448/ 46.0°Lat -63.0°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
Maritimes Basin location map
Statistics - Isostatic correction
Median 1.082
Mean 1.173
Scale 0.980
stdev 0.823
Z_min/Location 0.000/48.2°Lat -66.0333°Lon
Z_max/Location 3.102/47.1667°Lat -62.0°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)
Maritimes Basin location map
Statistics - TTS (sediment)
Median 0.432
Mean 0.892
Scale 1.174
stdev 1.354
Z_min/Location -0.851/46.2°Lat -63.9667°Lon
Z_max/Location 4.727/48.3667°Lat -61.9°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)
Maritimes Basin location map
Statistics - Beta (Sediment)
Median 1.058
Mean 1.191
Scale 0.160
stdev 0.330
Z_min/Location 0.902/46.2°Lat -63.9667°Lon
Z_max/Location 2.528/48.3667°Lat -61.9°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.
Maritimes Basin location map
Statistics - Crustal vs lithosph. extn.
Median -0.020
Mean -0.017
Scale 0.022
stdev 0.034
Z_min/Location -0.098/48.2333°Lat -60.2667°Lon
Z_max/Location 0.162/45.4667°Lat -61.5333°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
Maritimes Basin location map
Statistics - Anomalous TTS
Median 0.521
Mean 0.974
Scale 0.934
stdev 1.283
Z_min/Location -0.603/46.0667°Lat -63.9°Lon
Z_max/Location 4.725/48.3667°Lat -61.8°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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Predicted elevation
Maritimes Basin location map
Statistics - Predicted elevation
Median 1548.500
Mean 1575.020
Scale 124.359
stdev 132.282
Z_min/Location 1154.790/48.5667°Lat -58.2333°Lon
Z_max/Location 1851.910/48.2°Lat -61.1°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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Beta (Crust)
Maritimes Basin location map
Statistics - Beta (Crust)
Median 0.981
Mean 0.991
Scale 0.027
stdev 0.038
Z_min/Location 0.903/49.3333°Lat -64.3°Lon
Z_max/Location 1.195/45.4667°Lat -61.5333°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)
Maritimes Basin location map
Statistics - TTS (crust)
Median -0.155
Mean -0.082
Scale 0.222
stdev 0.288
Z_min/Location -0.845/49.3333°Lat -64.3°Lon
Z_max/Location 1.277/45.4667°Lat -61.5333°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
Maritimes Basin location map
Statistics - Differential Beta
Median 0.072
Mean 0.200
Scale 0.131
stdev 0.322
Z_min/Location -0.068/46.0333°Lat -63.9°Lon
Z_max/Location 1.528/48.3667°Lat -61.8667°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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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