Multiple rock-slope failures from Mannen in Romsdal Valley, western Norway, revealed from Quaternary geological mapping and 10 Be exposure dating
Bibliographic Data
| ID | 12265249 |
|---|---|
| Authors | Paula Hilger (Geohazard and Earth Observation, Geological Survey of Norway, Norway, corresponding author), Reginald L Hermanns (0000-0001-5577-5004, Geohazard and Earth Observation, Geological Survey of Norway, Norway), John C Gosse (Department of Earth Sciences, Dalhousie University, Canada), John Gosse (0000-0002-0814-8574, Dalhousie University), Benjamin Jacobs (0000-0003-1917-7060, Technical University of Munich), Bernd Etzelmüller (0000-0001-5156-3653, University of Oslo), Michael Krautblatter (0000-0002-2775-2742, Technical University of Munich) |
| Year | 2018 |
| Volume | 28 |
| Issue | 12 |
| Pages | 1841-1854 |
| Publication date | 2018-09-17 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | The Holocene (JOURNAL) |
| Journal identifiers | ISSN: 0959-6836 • E-ISSN: 1477-0911 |
| Publisher | SAGE Publishing (PUBLISHER • US) |
| DOI | 10.1177/0959683618798165 |
| OpenAlex | W2890799541 |
| Language | EN |
| Citations received | 2 |
| References cited | 84 |
Oversteepened valley walls in western Norway have high recurrences of Holocene rock-slope failure activity causing significant risk to communities and infrastructure. Deposits from six to nine catastrophic rock-slope failure (CRSF) events are preserved at the base of the Mannen rock-slope instability in the Romsdal Valley, western Norway. The timing of these CRSF events was determined by terrestrial cosmogenic nuclide dating and relative chronology due to mapping Quaternary deposits. The stratigraphical chronology indicates that three of the CRSF events occurred between 12 and 10 ka, during regional deglaciation. Congruent with previous investigations, these events are attributed to the debuttressing effect experienced by steep slopes following deglaciation, during a period of paraglacial relaxation. The remaining three to six CRSF events cluster at 4.9 ± 0.6 ka (based on 10 cosmogenic 10 Be samples from boulders). CRSF events during this later period are ascribed to climatic changes at the end of the Holocene thermal optimum, including increased precipitation rates, high air temperatures and the associated degradation of permafrost in rock-slope faces. Geomorphological mapping and sedimentological analyses further permit the contextualisation of these deposits within the overall sequence of post-glacial fjord-valley infilling. In the light of contemporary climate change, the relationship between CRSF frequency, precipitation, air temperature and permafrost degradation may be of interest to others working or operating in comparable settings
Chronology · Cosmogenic nuclide · Deglaciation · Geography · Geomorphology · Glacial period · Holocene · Period (music · Permafrost · Physical geography · Quaternary · Climate change and permafrost · Geology and Paleoclimatology Research · Landslides and related hazards · Geology · Oceanography · Paleontology
Extensive Boulder Erosion Resulting from a Range Fire on the Type-Pinedale Moraines, Fremont Lake, Wyoming
High-resolution record of Northern Hemisphere climate extending into the last interglacial period
The last Eurasian ice sheets – a chronological database and time‐slice reconstruction, Dated‐1
Terrestrial in situ cosmogenic nuclides
Deglaciation of Fennoscandia
Holocene glacier fluctuations of Flatebreen and winter-precipitation changes in the Jostedalsbreen region, western Norvay, based on glaciolacustrine sediment records
A Holocene record of snow-avalanche and flood activity reconstructed from a lacustrine sedimentary sequence in Oldevatnet, western Norway
Cosmogenic Cl-36 dating of postglacial landsliding at The Storr, Isle of Skye, Scotland
Holocene river floods in the upper Glomma catchment, southern Norway
Climatic signals recorded in snow avalanche-dominated colluvium in western Norway
| Citations per year | 2 |
|---|---|
| Citation span | 2025 - 2026 (2) |
| Highly cited | No |