ICONS atlas: NAM - Gettysburg Basin

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Overview

This page bundles the available data for the Gettysburg 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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Gettysburg Basin location map
Basin name Gettysburg Basin
Region code NAM
Basin ID 1043
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.

Gettysburg Basin cross section
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Dynamic topography evolution for basin centroid
Gettysburg 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
Gettysburg Basin location map
Statistics - Mantle Lid thickness
Median 93.958
Mean 93.983
Scale 2.318
stdev 1.888
Z_min/Location 90.561/39.6333°Lat -77.4333°Lon
Z_max/Location 97.503/ 40.3667°Lat -76.0°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
Gettysburg Basin location map
Statistics - Depth of 550 deg isotherm
Median -40.302
Mean -40.331
Scale 0.334
stdev 0.243
Z_min/Location -40.757/40.3667°Lat -76.5°Lon
Z_max/Location -39.995/ 39.9667°Lat -77.0°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
Gettysburg Basin location map
Statistics - Mobil isopachs
Median 6.786
Mean 6.779
Scale 0.169
stdev 0.130
Z_min/Location 6.525/40.3667°Lat -76.5°Lon
Z_max/Location 6.999/ 39.6°Lat -77.4°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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Plain crustal thickness
Gettysburg Basin location map
Statistics - Plain crustal thickness
Median 41.690
Mean 41.493
Scale 1.418
stdev 1.224
Z_min/Location 38.475/40.3667°Lat -76.0°Lon
Z_max/Location 43.222/ 39.7667°Lat -77.4°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 middle crust
Gettysburg Basin location map
Statistics - Base middle crust
Median -36.767
Mean -36.589
Scale 2.022
stdev 1.692
Z_min/Location -39.062/39.7667°Lat -77.4°Lon
Z_max/Location -32.569/ 40.3667°Lat -76.0°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 lower crust
Gettysburg Basin location map
Statistics - Base lower crust
Median -42.265
Mean -42.157
Scale 1.450
stdev 1.196
Z_min/Location -43.937/39.7667°Lat -77.4°Lon
Z_max/Location -39.331/ 40.3667°Lat -76.0°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
Gettysburg Basin location map
Statistics - Total crustal thickness
Median 42.537
Mean 42.424
Scale 1.538
stdev 1.264
Z_min/Location 39.455/40.3667°Lat -76.0°Lon
Z_max/Location 44.312/ 39.7667°Lat -77.4°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 upper crust
Gettysburg Basin location map
Statistics - Base upper crust
Median -20.991
Mean -21.000
Scale 0.228
stdev 0.200
Z_min/Location -21.426/40.3333°Lat -76.6667°Lon
Z_max/Location -20.455/ 40.3333°Lat -76.0333°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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Thermal lithospheric thickness
Gettysburg Basin location map
Statistics - Thermal lithospheric thickness
Median 136.509
Mean 136.408
Scale 0.774
stdev 0.736
Z_min/Location 134.538/39.6°Lat -77.4°Lon
Z_max/Location 137.699/ 40.3667°Lat -76.5°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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Heatflow
Gettysburg Basin location map
Statistics - Heatflow
Median 57.673
Mean 57.709
Scale 0.350
stdev 0.310
Z_min/Location 57.233/39.9333°Lat -77.3°Lon
Z_max/Location 58.526/ 40.3667°Lat -76.0°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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Topography (ETOPO2)
Gettysburg Basin location map
Statistics - Topography (ETOPO2)
Median 158.000
Mean 166.057
Scale 32.617
stdev 48.493
Z_min/Location 77.000/40.1°Lat -76.7°Lon
Z_max/Location 405.000/ 40.1333°Lat -77.1°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
Gettysburg Basin location map
Statistics - Base hard sediments
Median -0.667
Mean -0.664
Scale 0.107
stdev 0.094
Z_min/Location -0.855/40.3667°Lat -76.0°Lon
Z_max/Location -0.470/ 40.0333°Lat -76.7667°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
Gettysburg Basin location map
Statistics - Temperature at 50km depth
Median 686.352
Mean 686.598
Scale 2.614
stdev 2.310
Z_min/Location 682.583/40.3667°Lat -76.5°Lon
Z_max/Location 692.386/ 39.6°Lat -77.4°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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Laske sediment thickness
Gettysburg Basin location map
Statistics - Laske sediment thickness
Median 0.007
Mean 0.111
Scale 0.142
stdev 0.347
Z_min/Location -0.409/39.7°Lat -77.4333°Lon
Z_max/Location 1.296/ 40.3667°Lat -76.0°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
Gettysburg Basin location map
Statistics - Lithospheric temperature gradient
Median 7.098
Mean 7.104
Scale 0.048
stdev 0.040
Z_min/Location 7.037/40.3667°Lat -76.5°Lon
Z_max/Location 7.197/ 39.6°Lat -77.4°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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Computations

Isostatic correction
Gettysburg Basin location map
Statistics - Isostatic correction
Median 0.003
Mean 0.072
Scale 0.005
stdev 0.129
Z_min/Location 0.000/40.2667°Lat -76.8°Lon
Z_max/Location 0.545/40.3667°Lat -76.0°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)
Gettysburg Basin location map
Statistics - TTS (sediment)
Median 0.605
Mean 0.592
Scale 0.126
stdev 0.116
Z_min/Location 0.310/40.3667°Lat -76.0°Lon
Z_max/Location 0.808/40.3°Lat -76.7333°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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Beta (Sediment)
Gettysburg Basin location map
Statistics - Beta (Sediment)
Median 1.084
Mean 1.082
Scale 0.019
stdev 0.017
Z_min/Location 1.041/40.3667°Lat -76.0°Lon
Z_max/Location 1.115/40.3°Lat -76.7333°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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Crustal vs lithosph. extn.
Gettysburg Basin location map
Statistics - Crustal vs lithosph. extn.
Median -0.005
Mean 0.000
Scale 0.040
stdev 0.034
Z_min/Location -0.052/39.7°Lat -77.4333°Lon
Z_max/Location 0.082/40.3667°Lat -76.0°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
Gettysburg Basin location map
Statistics - Anomalous TTS
Median 0.658
Mean 0.597
Scale 0.332
stdev 0.321
Z_min/Location -0.254/40.3667°Lat -76.0°Lon
Z_max/Location 1.063/39.9333°Lat -77.3°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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Predicted elevation
Gettysburg Basin location map
Statistics - Predicted elevation
Median 1377.870
Mean 1367.810
Scale 91.344
stdev 77.907
Z_min/Location 1184.410/40.3667°Lat -76.0°Lon
Z_max/Location 1486.030/39.7°Lat -77.4333°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)
Gettysburg Basin location map
Statistics - Beta (Crust)
Median 0.995
Mean 1.000
Scale 0.033
stdev 0.030
Z_min/Location 0.959/39.7667°Lat -77.4°Lon
Z_max/Location 1.078/40.3667°Lat -76.0°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 (crust)
Gettysburg Basin location map
Statistics - TTS (crust)
Median -0.042
Mean -0.005
Scale 0.267
stdev 0.231
Z_min/Location -0.331/39.7667°Lat -77.4°Lon
Z_max/Location 0.564/40.3667°Lat -76.0°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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Differential Beta
Gettysburg Basin location map
Statistics - Differential Beta
Median 0.090
Mean 0.082
Scale 0.044
stdev 0.044
Z_min/Location -0.036/40.3667°Lat -76.0°Lon
Z_max/Location 0.145/39.9333°Lat -77.3°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