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| Main Authors: | , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
2014
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| Online Access: | https://doi.org/10.1594/PANGAEA.833893 |
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| _version_ | 1867170467515727872 |
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| author | Sturzenegger, Matthieu Stead, Doug Gosse, John Ward, Brent Froese, Corey |
| author_facet | Sturzenegger, Matthieu Stead, Doug Gosse, John Ward, Brent Froese, Corey |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | This paper presents the results of a combined study, using cosmogenic 36Cl exposure dating and terrestrial digital photogrammetry, of the Palliser Rockslide located in the southeastern Canadian Rocky Mountains. This site is particularly well-suited to demonstrate how this multi-disciplinary approach can be used to differentiate distinct rocksliding events, estimate their volume, and establish their chronology and recurrence interval. Observations suggest that rocksliding has been ongoing since the late Pleistocene deglaciation. Two major rockslide events have been dated at 10.0 ± 1.2 kyr and 7.7 ± 0.8 kyr before present, with failure volumes of 40 Mm3 and 8 Mm3, respectively. The results have important implications concerning our understanding of the temporal distribution of paraglacial rockslides and rock avalanches; they provide a better understanding of the volumes and failure mechanisms of recurrent failure events; and they represent the first absolute ages of a prehistoric high magnitude event in the Canadian Rocky Mountains. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_833893 |
| institution | PANGAEA |
| language | en |
| publishDate | 2014 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Palliser Rockslide cosmogenic 36Cl exposure ages (raw data) and erosion effect on the cosmogenic Sturzenegger, Matthieu Stead, Doug Gosse, John Ward, Brent Froese, Corey Canada; Palliser_Rockslide This paper presents the results of a combined study, using cosmogenic 36Cl exposure dating and terrestrial digital photogrammetry, of the Palliser Rockslide located in the southeastern Canadian Rocky Mountains. This site is particularly well-suited to demonstrate how this multi-disciplinary approach can be used to differentiate distinct rocksliding events, estimate their volume, and establish their chronology and recurrence interval. Observations suggest that rocksliding has been ongoing since the late Pleistocene deglaciation. Two major rockslide events have been dated at 10.0 ± 1.2 kyr and 7.7 ± 0.8 kyr before present, with failure volumes of 40 Mm3 and 8 Mm3, respectively. The results have important implications concerning our understanding of the temporal distribution of paraglacial rockslides and rock avalanches; they provide a better understanding of the volumes and failure mechanisms of recurrent failure events; and they represent the first absolute ages of a prehistoric high magnitude event in the Canadian Rocky Mountains. |
| title | Palliser Rockslide cosmogenic 36Cl exposure ages (raw data) and erosion effect on the cosmogenic |
| topic | Canada; Palliser_Rockslide |
| url | https://doi.org/10.1594/PANGAEA.833893 |