Periglacial Features on the Margins of a Receding Plateau Ice Cap , Lyngen , North Norway

نویسنده

  • BRIAN WHALLEY
چکیده

Some features around the perimeter of the Balgesvarri plateau ice cap are described. Sorted stone circles were found beneath a slowly retreating ice margin, the basal ice in this area appears to be below the pressure-melting point. No absolute dating of features was possible but a relative chronology is suggested. RESUME. Le retrait glaciaire et les manifestations piriglaciaires sur les marges d'un glacier de calotte a Lyngen, Norvege du nord. On decrit quelques traits caracteristiques du pourtour du glacier de calotte de Balgesvarri. Des sols polygonaux ont ete decouverts a l'aval d'un front glaciaire en leger retrait. La glace de fond dans cette zone semble ttre en dessous du point de fusion correspondant a la pression. Il n'a pas ete possible d'etablir une datation absolue de ces manifestations periglaciaires mais on propose une chronologie relative. ZUSAMMENFASSUNG. Gletscherriickgang und periglaziale Erscheinungen an den Riindern einer Plateau-Eiskappe, Lyngen, Nordnorwegen. Einige Erscheinungen an der Peripherie der Balgesvarri-Plateaukappe werden beschrieben. Unter einem langsam zuruckgehenden Eisrand wurden Steinkreise gefunden; das Eis am Untergrund dieser Region durfte si ch unter dem Druckschmelzpunkt befinden. Eine absolute Datierung der Erscheinungen war nicht moglich, doch llisst sich eine relative zeitliche Abfolge ermitteln.

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تاریخ انتشار 2010