ICONS atlas: CHN - Qaidam (Tsaidam) Basin

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Overview

This page bundles the available data for the Qaidam (Tsaidam) Basin in the China. 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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Qaidam (Tsaidam) Basin location map
Basin name Qaidam (Tsaidam) Basin
Region code CHN
Basin ID 6003
No. of rings 1
Basin size [km²] 121384.0
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.

Qaidam (Tsaidam) Basin cross section
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Dynamic topography evolution for basin centroid
Qaidam (Tsaidam) 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
Qaidam (Tsaidam) Basin location map
Statistics - Mantle Lid thickness
Median 85.712
Mean 86.785
Scale 5.567
stdev 5.935
Z_min/Location 77.500/37.0°Lat 96.0°Lon
Z_max/Location 120.884/ 38.1667°Lat 88.9°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
Qaidam (Tsaidam) Basin location map
Statistics - Depth of 550 deg isotherm
Median -42.139
Mean -42.369
Scale 1.203
stdev 1.116
Z_min/Location -47.315/38.1333°Lat 88.9°Lon
Z_max/Location -40.991/ 39.0667°Lat 93.0°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
Qaidam (Tsaidam) Basin location map
Statistics - Mobil isopachs
Median 4.328
Mean 4.506
Scale 3.856
stdev 2.924
Z_min/Location 0.414/36.3°Lat 98.1°Lon
Z_max/Location 11.023/ 37.9333°Lat 93.3333°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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Plain crustal thickness
Qaidam (Tsaidam) Basin location map
Statistics - Plain crustal thickness
Median 59.554
Mean 59.614
Scale 2.911
stdev 2.276
Z_min/Location 55.365/39.0333°Lat 93.6333°Lon
Z_max/Location 64.930/ 36.8°Lat 92.4333°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 middle crust
Qaidam (Tsaidam) Basin location map
Statistics - Base middle crust
Median -36.890
Mean -36.320
Scale 1.061
stdev 1.312
Z_min/Location -38.190/36.2333°Lat 97.2333°Lon
Z_max/Location -33.050/ 38.1°Lat 88.9333°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
Qaidam (Tsaidam) Basin location map
Statistics - Base lower crust
Median -57.554
Mean -57.148
Scale 1.941
stdev 1.794
Z_min/Location -60.622/36.8°Lat 92.4333°Lon
Z_max/Location -51.682/ 38.1667°Lat 88.9°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
Qaidam (Tsaidam) Basin location map
Statistics - Total crustal thickness
Median 61.428
Mean 61.208
Scale 2.339
stdev 1.962
Z_min/Location 56.461/38.1667°Lat 88.9°Lon
Z_max/Location 65.511/ 36.8°Lat 92.4333°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 upper crust
Qaidam (Tsaidam) Basin location map
Statistics - Base upper crust
Median -16.368
Mean -16.204
Scale 1.099
stdev 1.080
Z_min/Location -18.092/38.0°Lat 95.2333°Lon
Z_max/Location -14.113/ 38.0333°Lat 89.1°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
Qaidam (Tsaidam) Basin location map
Statistics - Thermal lithospheric thickness
Median 146.519
Mean 147.993
Scale 7.074
stdev 6.753
Z_min/Location 139.882/39.0667°Lat 93.0°Lon
Z_max/Location 177.431/ 38.1333°Lat 88.9°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
Qaidam (Tsaidam) Basin location map
Statistics - Heatflow
Median 59.284
Mean 60.010
Scale 5.959
stdev 5.869
Z_min/Location 46.634/36.3667°Lat 94.1333°Lon
Z_max/Location 86.261/ 36.8°Lat 92.4333°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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Topography (ETOPO2)
Qaidam (Tsaidam) Basin location map
Statistics - Topography (ETOPO2)
Median 2790.000
Mean 2914.850
Scale 149.743
stdev 299.470
Z_min/Location 2643.000/37.7333°Lat 94.1333°Lon
Z_max/Location 5384.000/ 38.2667°Lat 89.4667°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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Base hard sediments
Qaidam (Tsaidam) Basin location map
Statistics - Base hard sediments
Median 2.684
Mean 2.466
Scale 1.269
stdev 1.129
Z_min/Location 0.144/38.1333°Lat 94.6667°Lon
Z_max/Location 4.468/ 37.1333°Lat 91.6667°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
Qaidam (Tsaidam) Basin location map
Statistics - Temperature at 50km depth
Median 660.742
Mean 657.202
Scale 15.968
stdev 15.341
Z_min/Location 588.186/38.1333°Lat 88.9°Lon
Z_max/Location 675.774/ 39.1°Lat 92.5°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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Laske sediment thickness
Qaidam (Tsaidam) Basin location map
Statistics - Laske sediment thickness
Median 1.204
Mean 1.987
Scale 1.328
stdev 1.784
Z_min/Location -0.199/36.7667°Lat 93.1°Lon
Z_max/Location 6.068/ 38.0667°Lat 93.8°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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Lithospheric temperature gradient
Qaidam (Tsaidam) Basin location map
Statistics - Lithospheric temperature gradient
Median 6.547
Mean 6.535
Scale 0.349
stdev 0.282
Z_min/Location 5.701/38.1333°Lat 88.9°Lon
Z_max/Location 6.948/ 39.0667°Lat 93.0°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

Beta (Crust)
Qaidam (Tsaidam) Basin location map
Statistics - Beta (Crust)
Median 1.007
Mean 1.008
Scale 0.049
stdev 0.038
Z_min/Location 0.924/36.8°Lat 92.4333°Lon
Z_max/Location 1.083/39.0333°Lat 93.6333°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
Qaidam (Tsaidam) Basin location map
Statistics - Isostatic correction
Median 0.508
Mean 0.789
Scale 0.550
stdev 0.674
Z_min/Location 0.000/36.9667°Lat 92.5667°Lon
Z_max/Location 2.252/38.0667°Lat 93.8°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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TTS (crust)
Qaidam (Tsaidam) Basin location map
Statistics - TTS (crust)
Median 0.056
Mean 0.048
Scale 0.380
stdev 0.297
Z_min/Location -0.645/36.8°Lat 92.4333°Lon
Z_max/Location 0.602/39.0333°Lat 93.6333°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)
Qaidam (Tsaidam) Basin location map
Statistics - TTS (sediment)
Median -3.418
Mean -3.255
Scale 0.736
stdev 0.681
Z_min/Location -4.535/37.1333°Lat 91.6667°Lon
Z_max/Location -1.462/37.7333°Lat 95.6°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)
Qaidam (Tsaidam) Basin location map
Statistics - Beta (Sediment)
Median 0.696
Mean 0.709
Scale 0.045
stdev 0.045
Z_min/Location 0.633/37.1333°Lat 91.6667°Lon
Z_max/Location 0.843/37.7333°Lat 95.6°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
Qaidam (Tsaidam) Basin location map
Statistics - Differential Beta
Median -0.283
Mean -0.299
Scale 0.052
stdev 0.049
Z_min/Location -0.427/38.1333°Lat 88.9°Lon
Z_max/Location -0.187/37.6°Lat 95.8°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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Crustal vs lithosph. extn.
Qaidam (Tsaidam) Basin location map
Statistics - Crustal vs lithosph. extn.
Median -0.025
Mean -0.030
Scale 0.024
stdev 0.033
Z_min/Location -0.109/37.0°Lat 96.0°Lon
Z_max/Location 0.208/38.1667°Lat 88.9°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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Anomalous TTS
Qaidam (Tsaidam) Basin location map
Statistics - Anomalous TTS
Median -3.325
Mean -3.303
Scale 0.832
stdev 0.646
Z_min/Location -4.877/38.1°Lat 88.9333°Lon
Z_max/Location -1.705/37.6°Lat 95.8°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
Qaidam (Tsaidam) Basin location map
Statistics - Predicted elevation
Median 1397.070
Mean 1367.650
Scale 157.007
stdev 144.401
Z_min/Location 882.117/36.8°Lat 92.4333°Lon
Z_max/Location 1589.280/39.1°Lat 92.5°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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This basin data is based on interpolated global grids and might contain gridding errors or wrongly interpolated data values.

Page generated 2007-09-30 21:53:58 CEST | © Christian Heine, School of Geosciences, Sydney University, Australia