chaos de blocs

CONT: Sur les pentes, on rencontre des dépôts dits colluviaux. Quatre types se distinguent : les apports de pente, les éboulis calcaires, les chaos de blocs et les brèches de pente. [...] Les chaos de blocs traduisent l'écroulement en masse des corniches sus-jacentes. Les blocs, disposés de manière irrégulière, ont généralement des dimensions importantes.
CONT: Dans la réalité d'un paysage montagneux, la surface du talus est complexe. Elle comporte souvent un chaos de blocs de tailles diverses.

CONT: A block field is a continuous surface cover of large angular to subangular rocks derived from a source of well jointed bedrock either beneath or upslope from the block covering. The blocks are generally dislodged by frost action and form a layer greater than one or two clast thicknesses (as opposed to a rock veneer, which has a thickness no greater than two clast thicknesses).
OBS: A block field can occur on a steep slope if the source rock is exposed along a high ridge or similar topographic feature, whereas the term felsenmeer refers to a block field that occurs on a flat or gently sloping surface that is derived from an underlying source.