Pseudoperiglacial structures in the central Sahara

Abstract

Article in French.

ORIGINAL TITLE: Structures pseudopériglaciaires au Sahara Central

Polynonal and circular structures have been described near the Iherir oasis on the Tissali N'Adjer plateau. These structures are formed by a fracture process caused by desiccation, aeolian transport and sliding of detrital material onto a clayey surface.