Postglacial slip distribution along the Teton normal fault (Wyoming, USA), derived from tectonically offset geomorphological features

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Hampel, A.; Hetzel, R.; Erdmann, M.-S.: Postglacial slip distribution along the Teton normal fault (Wyoming, USA), derived from tectonically offset geomorphological features. In: Geosphere 17 (2021), S. 1-17. DOI: https://doi.org/10.1130/GES02370.1

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To cite the version in the repository, please use this identifier: https://doi.org/10.15488/11191

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Sum total of downloads: 92




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Along the eastern front of the Teton Range, northeastern Basin and Range province (Wyoming, USA), well-preserved fault scarps that formed across moraines, river terraces, and other geomorphological features indicate that multiple earthquakes ruptured the range-bounding Teton normal fault after the Last Glacial Maximum (LGM). Here we use high-resolution digital eleva­tion models derived from lidar data to determine the vertical slip distribution along strike of the Teton fault from 54 topographic profiles across tectonically offset geomorphological features along the entire Teton Range front. We find that offset LGM moraines and glacially striated surfaces show higher vertical displacements than younger fluvial terraces, which formed at valley exits upstream of LGM terminal moraines. Our results reveal that the tectonic off­sets preserved in the fault scarps are post-LGM in age and that the postglacial slip distribution along strike of the Teton fault is asymmetric with respect to the Teton Range center, with the maximum vertical displacements (27–23 m) being located north of Jenny Lake and along the southwestern shore of Jack­son Lake. As indicated by earlier three-dimensional numerical models, this asymmetric slip distribution results from postglacial unloading of the Teton fault, which experienced loading by the Yellowstone ice cap and valley glaciers in the Teton Range during the last glaciation.
License of this version: CC BY-NC 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2021
Appears in Collections:Naturwissenschaftliche Fakultät

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1 image of flag of Germany Germany 30 32.61%
2 image of flag of United States United States 26 28.26%
3 image of flag of No geo information available No geo information available 7 7.61%
4 image of flag of China China 7 7.61%
5 image of flag of Europe Europe 5 5.43%
6 image of flag of United Kingdom United Kingdom 4 4.35%
7 image of flag of Canada Canada 4 4.35%
8 image of flag of Norway Norway 2 2.17%
9 image of flag of Russian Federation Russian Federation 1 1.09%
10 image of flag of Italy Italy 1 1.09%
    other countries 5 5.43%

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