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  The Antarctic continent mapped by global similarity association

Staal, T., Reading, A. M., Cracknell, M. J., Ebbing, J., Halpin, J. A., Kelly, I., MacKie, E., Sobh, M., Turber, R., Whittaker, J. M. (2023): The Antarctic continent mapped by global similarity association, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-2140

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018659 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018659_3
Genre: Conference Paper

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 Creators:
Staal, Tobias1, Author
Reading, Anya M.1, Author
Cracknell, Matthew J.1, Author
Ebbing, Jörg1, Author
Halpin, Jacqueline A.1, Author
Kelly, Ian1, Author
MacKie, Emma1, Author
Sobh, Mohamed1, Author
Turber, Ross1, Author
Whittaker, Joanne M.1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: The geology of Antarctica is formed from cratons, accreted terranes from multiple supercontinental cycles, and ongoing tectonism and glaciation. It would be a mistake to assume that the subglacial continent is geologically less complex than any other part of the world. Geophysical data and the observed interaction between the solid Earth and the ice sheet suggest several distinct geological regions in the interior. Antarctica's margins have been affiliated with geological observations in adjoint Gondwana neighbours, and those projections identify Antarctica as a hub in the supercontinent cycle rather than a snowbank at the margin of the map. However, producing a robust tectonic map of the interior is challenging, as existing datasets and models are inconsistent and the interpretations ambiguous. We map the tectonic domains of the Antarctic continent by applying a similarity approach. From multivariate observables in other continents, we calculate the most similar tectonic setting for each location in Antarctica and assign discreet distributions of tectonic classes. Observables include potential field data, seismic tomography, and, where applicable, geological observations. We use information entropy and cost function to optimise and evaluate the robustness of the model. Our results refine and redefine the tectonic map of the interior.

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Language(s): eng - English
 Dates: 2023
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-2140
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
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