Mots-clés
Cumbria England GPR Granite Géomorphodynamique Holocène Mouvement de masse Paléogéographie Postglaciaire Royaume-Uni Threlked Knotts Cumbria Earth surface processes England Granite Ground penetrating radar Holocene Mass movement Palaeogeography Postglacial United Kingdom Cúmbria Geomorfodinámica Granito Holoceno Inglaterra Movimiento de masa Paleogeografía Posglaciar Reino UnidoA large landslide event in a post-glacial landscape : rethinking glacial legacy
Auteur(s) et Affiliation(s)
DAVIES, T.R.H.
Dept. of Geological Sciences, Univ. of Canterbury, Christchurch, Nouvelle-Zelande
WARBURTON, J.
Dept. of Geography, Univ., Durham, Royaume-Uni
DUNNING, S.A.
Dept. of Geography, Northumbria Univ., Newcastle-upon-Tyne, Royaume-Uni
BUBECK, A.A.P.
Geospatial Research Ltd, Dept of Earth Sciences, Univ., Durham, Royaume-Uni
Description :
Threlkeld Knotts in the English Lake District has hitherto been considered to be a glacially-modified intrusion of microgranite. However, its surface features are incompatible with glacial modification; neither can these nor the subsurface structures revealed by ground-penetrating radar (GPR) be explained by post-glacial subaerial processes acting on a glacially-modified microgranite intrusion. Here, the AA. re-interpret Threlkeld Knotts as a very large post-glacial landslide involving the microgranite. This interpretation is tested against published and recent information on the geology of the site, the glacial geomorphic history of the area and newly-acquired GPR data. More than 60 large post-Last Glacial Maximum (LGM) rock–slope failures have significantly modified the glaciated landscape of the Lake District; this is one of the largest.
Type de document :
Article de périodique
Source :
Earth surface processes and landforms, issn : 0197-9337, 2013, vol. 38, n°. 11, p. 1261-1268, nombre de pages : 8, Références bibliographiques : 1 p.
Date :
2013
Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)