| Title | The anatomy of an active slide: the Gascons rockslide, Québec, Canada |
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| Author | Cloutier, C; Locat, J; Couture, R; Jaboyedoff, M |
| Source | Landslides 2015 p. 1-18, https://doi.org/10.1007/s10346-015-0566-5 |
| Image |  |
| Year | 2015 |
| Alt Series | Earth Sciences Sector, Contribution Series 20140406 |
| Publisher | Springer Nature |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Province | Quebec |
| NTS | 22A/02; 22A/03 |
| Area | Gaspe Peninsula |
| Lat/Long WENS | -65.5000 -64.5000 48.2500 48.0000 |
| Subjects | engineering geology; geophysics; landslides; remote sensing; slope deposits; slope failures; slope stability; LiDAR |
| Illustrations | geologic maps; Landsat images; satellite images; images; 3-D images; digital images; photographs; cross-sections, stratigraphic; cross-sections, structural; diagrams; tables; stereonets |
| Program | GSC Northern Canada Division |
| Released | 2015 03 04 |
| Abstract | A railroad crosses the coastal Gascons rockslide, in Quebec, Canada. This study improves the understanding of the rockslide’s failure mechanism and post-failure behaviour responsible for the deformation
in the railroad. The slide is an asymmetrical wedge failure of 410,000 m3, in rocks made up of centimetre-scale beds of nodular calcilutite alternating with sandstones and limestone. The post-failure stage of the rockslide is characterised by
continuous movement of blocks with speeds ranging from 6 to 110 mm/year. The main water table is just below the sliding surface, but precipitation and snowmelt can raise it above the sliding surface in the upper part of the slide. We propose a model
for the rockslide, its failure mechanism, geometry and hydrogeology to provide a baseline for interpreting the near-real-time data collected since 2009. |
| Summary | (Plain Language Summary, not published)
A unstable rock slope is threatening a railway corridor in Gaspesie (Quebec). The rock slope behaviour has been subject to a detailed study, including
its displacements, through the use of field instruments and remote sensing. The analysis ofthe displacements of the rock slope and its potential future behaviourm allow a better assessment of risk. |
| GEOSCAN ID | 295775 |
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