Pierre Pech
Articles
Geographia Polonica (2003) vol. 76, iss. 2, pp. 65-87 | 
Full text
Abstract
The age of recent glacial, glacifluvial/fluvial forms is determined using lichenometric dating in two Alpine valleys of the Massif des Ecrins in France. A lichen growth-curve is based on data from natural sites, such as boulder-fields, moraine ridges etc. of known age on recently deglaciated terrain. The maximum extent of the glacial system of the Veneon and Etangons valleys during the Little Ice Age was 15 km in length. The maximum lichen diameter of 90-95 mm characterizes the stage of recession correlated with AD. 1650-1660. Analysis of the systems of terraces and paleochannels of the progla-cial rivers supported by lichenometric dating allows three periods of intensified fluvial activity to be distinguished for the Little Ice Age.
Keywords: deglaciation landforms, lichenometry, Little Ice Age, Massif des Ecrins, France
, Institute of Geography and Spatial Organization Polish Academy of Sciences, Św. Jana 22, 31-018 Kraków, Poland
, Université de Lyon 2, Faculté GHHAT, 5, av. Pierre Mendes, 69676 Bron, France
, Institut de Géographie Alpine, 14 bis av. Marie-Reynoard, 38100 Grenoble, France
, Institut de Géographie, Université Paris I-Sorbonne, 191, rue Saint-Jacques, 75005 Paris, CNRS Laboratoire de Géographie Physique 1, pl. A.Briand 92195, Meudon Cedex, France
[kedzia@zg.pan.krakow.pl], Institute of Geography and Spatial Organization Polish Academy of Sciences, Św. Jana 22, 31-018 Kraków, Poland
[kotarba@zg.pan.krakow.pl], Institute of Geography and Spatial Organization Polish Academy of Sciences, Św. Jana 22, 31-018 Kraków, Poland
[pierre.pech@univ-paris1.f], Institut de Géographie, Université Paris I-Sorbonne, 191, rue Saint-Jacques, 75005 Paris, CNRS Laboratoire de Géographie Physique 1, pl. A.Briand 92195, Meudon Cedex, France
[raczk@zg.pan.krakow.pl], Institute of Geography and Spatial Organization Polish Academy of Sciences, Św. Jana 22, 31-018 Kraków, Poland