• Citer

Isotopic composition of ice and subglacially precipitated calcite in an alpine area

par Lemmens, Michèle ;Lorrain, Reginald ;Haren, J
Référence Zeitschrift für Gletscherkunde und Glazialgeologie, 18, 2, page (151-159)
Publication Publié, 1984

Article révisé par les pairs

• Détails
• Contenu

Résumé :

Subglacially precipitated calcites, formed since 1860, are exposed by the retreating of the Tsanfleuron glacier in the Swiss Alps. Isotopic study suggests that the initial water, from which calcium carbonate is precipitated by partial freezing, is produced by melting of the basal ice layer, not of glacier ice. Because of the wide range of isotopic composition of basal ice, some doubts are expressed on the possibility given by such subglacially precipitated calcites to determine the isotopic composition of Pleistocene ice sheets and to correct the paleotemperature scale. -from English summary