Veuillez choisir le dossier dans lequel vous souhaitez ajouter ce contenu :
Filtrer les résultats
Colloque
Till, by definition, is a glacial sediment but its classification is complex and controversial for the following reasons: 1) till is a polygenetic sediment since most of its varieties, with one exception (subnination till), require melting of ice, to be deposited, or even formed and deposited; 2) several genetic varieties of till may be deposited simultaneously within a single stratigraphic unit: both at different levels, as well as laterally; 3) the commonly known varieties of till, lodgement, melt-out, deformation till and gravity flowtill (glacier-related sediment flow deposit of some authors) are related members in a continuum of many combinations, that …
