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(Article of periodic en Français - 1976)

Document title

Les pingos quaternaires de France

Authors(s) and Affiliation(s)

CAILLEUX A. ;

Abstract

Quaternary pingos mores or less circular closed basins 2,5 to 120m in diameter, due to ground-ice melting are known from Paris and Lorraine to 4430N. They are located on roughly horizontal terrain (0 to1) and loose material, and their density may reach 35per km, but usually is about 1per km. Depth: 0,4 to 4m| mean 1,8. Between 6 and 22% of the pingos coutain water, at least in winter. One former pingo may be young Pliocene to Würm in age, another one, near Nevers, is dated DryasIII, i. e. the last cold stadium of Würm, by pollen analysis. Many others, which still keep their rather steep sides experienced no later solifluxion phases, and also seem to be of the same DryasIII age.

Source

Article of periodic

published at : Revue de Géographie de Montréal Montréal

Editor :

Millesime : 1976, vol. 30, no4 [pp. 374-379]

Bibliographic references : 18réf.

Language

Français

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