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Livre VII : La carapace calcaire et son socle friable

[article]

Année 1931 19-3 pp. 608-673
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LIVRE VII

La carapace calcaire et son socle friable

Chapitre I : La topographie calcaire en Vercors.

Traits généraux de la topographie calcaire ; éléments de sa variété.

Un sol fissuré, des lapiaz burinés dans la pierre, avec leurs arêtes aiguës et parallèles, d'une blancheur éclatante; des chaos de blocs arrondis et troués; des entonnoirs de dimenbions variées, les « sabots », criblant le sol qu'on dirait bombardé; çà et là des gouffres, les « scialets » ou « puits », charniers au fond desquels les bergers précipitent le bétail crevé au pâturage; des cavernes : « grottes », « baumes » ou « cuves », de toutes dimensions, parfois parcourues par les eaux souterraines ; de grands plateaux arides, au sol mince, où les hommes sont rares et souvent manquent complètement; où, à défaut de sources, on puise à des citernes d'eau pluviale, où des fissures, pleines de neige l'été, doivent suffire aux bergers et aux troupeaux : tous ces traits du paysage se répètent sur les plateaux calcaires qui font la plus grande part du massif du Vercors; l'un d'eux s'allonge de la Bourne à la montagne de Glandasse, sur près de 40 km., avec une largeur moyenne de sept à huit.

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