In the Albanian Alps, above 1700m a.s.l., sixteen inactive rock glaciers have been identified, all colonized by herbaceous vegetation. Assuming a -2°C isotherm for the activity of rock glaciers, and after calculating the atmospheric lapse rate, it is estimated that thermal conditions must have been 6.4"C lower than the present mean annual temperature. Because rock glaciers occupied surfaces covered by ice during the periglacial Wurm period, they cannot be older than 14,000-17,000years; so they are probably referable to the Dryas. Such a temperature drop took place probably during the Dryas. RESUMEDans les Alpes d'Albanie, au dessus de 1,700m d'altitude, 16 glaciers rocheux inactifs ont CtC identifiks; tous sont colonises par une vegetation herbacee.En admettant qu'une tempkrature moyenne annuelle de -2°C ait Ctt nkcessaire pour que les glaciers rocheux apparaissent, il est probable que la temperature moyenne annuelle a CtC, au moment de la formation des glaciers rocheux, infkrieure de 6,4"C ? i la tempCrature actuelle. Parce que les surfaces Ctaient couvertes par la glace pendant ie plkniglaciaire Wurm, elles ne peuvent pas Stre apparues avant 14,000-17,000 ans. De ce fait on peut les attribue probablement au Dryas. Cette baisse de tempkrature s'est probablement produite pendant le Dryas.
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