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EnglishThe Rodoretto Valley (about 25 km2) (Western Alps, NW Italy) shaped in the metamorphic bedrock, covered by Quaternary sediments, is involved in significant deep-seated gravitational slope deformation (DSGSD). A detailed field survey revealed several morpho-structures typically related to DSGSD phenomena (open fractures, doubled ridges, scarps, trenches, counterscarps and bulging reliefs) and other significant gravitational morphologies, here defined as gravitational valleys, not previously reported in geological literature.Fieldwork also allowed us to distinguish various types of glacial sediments, reconstructing the supply basins, relatively dating glacialism to LGM and Late Glacial-Holocene and evaluating their gravitational dislocation. The wide extension of the area characterized by DSGSD and incredibly big dimension of single morpho-structures are the most important recognized features. In particular, we observed that entire sectors of the study area were gravitatively conditioned not only by local slid along the Rodoretto slopes but also by movement towards the nearby and deeper Germanasca Valley.
| Titolo: | Deep-seated gravitational slope deformation involving glacial evidence in the Rodoretto Valley (NW Alps) | |
| Autori Riconosciuti: | ||
| Autori: | Forno M.G.; Gattiglio M.; Ghignone S.; Taddia G. | |
| Data di pubblicazione: | 2021 | |
| Abstract: | The Rodoretto Valley (about 25 km2) (Western Alps, NW Italy) shaped in the metamorphic bedrock, covered by Quaternary sediments, is involved in significant deep-seated gravitational slope deformation (DSGSD). A detailed field survey revealed several morpho-structures typically related to DSGSD phenomena (open fractures, doubled ridges, scarps, trenches, counterscarps and bulging reliefs) and other significant gravitational morphologies, here defined as gravitational valleys, not previously reported in geological literature.Fieldwork also allowed us to distinguish various types of glacial sediments, reconstructing the supply basins, relatively dating glacialism to LGM and Late Glacial-Holocene and evaluating their gravitational dislocation. The wide extension of the area characterized by DSGSD and incredibly big dimension of single morpho-structures are the most important recognized features. In particular, we observed that entire sectors of the study area were gravitatively conditioned not only by local slid along the Rodoretto slopes but also by movement towards the nearby and deeper Germanasca Valley. | |
| Volume: | 17 | |
| Fascicolo: | 2 | |
| Pagina iniziale: | 846 | |
| Pagina finale: | 858 | |
| Digital Object Identifier (DOI): | 10.1080/17445647.2021.1996476 | |
| URL: | open access | |
| Parole Chiave: | Alpine geomorphology; Deep seated gravitational slope deformation; Germanasca Valley; glacial shaping; Quaternary | |
| Rivista: | JOURNAL OF MAPS | |
| Appare nelle tipologie: | 03A-Articolo su Rivista |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| Forno et al., 2021 Rodoretto paper 17445647.2021.pdf | Articolo principale | PDF EDITORIALE | Open Access Visualizza/Apri | |
| Forno et al., 2021 Rodoretto map tjom_a_1996476_sm0889.pdf | Carta geologica allegata | PDF EDITORIALE | Open Access Visualizza/Apri |
http://hdl.handle.net/2318/1838358
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