The clast fabrics of certain types of terrestrial slope deposits are reviewed and compared, including the deposits of rockfalls, solifluction, debris flows, dry grain flows, frost‐coated clast flows and run‐off. The analysis is based on modern deposits in active environments. The study shows that fabric characteristics allow discrimination between ‘collective’and individual movement of rock particles. The individual particle movement generally results in a random clast orientation, whereas the processes of ‘collective’movement typically create distinct preferred orientations. The highest fabric strengths together with low values of spherical variance are found in solifluction deposits. A survey of Pleistocene slope deposits indicates, however, that clast fabric has to be used with caution in the identification of past slope dynamics, because significant post‐depositional changes may occur during ageing and burial of deposits. The diagnostic significance of fabric characteristics may also be low due to the overlap of the statistical values that typify different processes.
The principal aspects addressed are the relationships between transport processes and depositional environments, and the sedimentary properties of the deposits. The following 'process-product' models are discussed: (a) stone-banked solifluction sheets or lobes, (b) dry grain flows and frost-coated clast flows, (c) debris flows, and (d) niveo-aeolian transport within the context of talus development. Problems of convergence, the possible role of other processes, and the climatic significance of stratified slope deposits are briefly discussed.
RBSUMBCet article traite des modkles concernant la genCse et l'interprbtation environnementale des dCp6ts de versant stratifiks. Les relations des mdcanismes de transport avec, d'une part, les milieux de stdimentation et, d'autre part, les CaractCristiques stdimentologiques, sont dCcrites. Toutes les donnCes prCsentCes ici proviennent d'btudes rCalisCes en milieux actifs. Les modbles gknttiques et skdimentologiques trait& sont les suivants: (a) nappe-coulkes et lobes de solifluxion h front pierreux, (b) coulCes de pierres skches et coulCes de pierres glades, (c) flots de dCbris, et (d) transport nivCo-tolien sur un talus. A la fin de cet article, sont tvoquks les problkmes de convergence, le r61e possible de mCcanismes stdimentaires non intCgrCs dans les modCles, ainsi que le problCme de la signification climatique des dCp6ts stratifits. Ce bilan global peut donc servir de base introductive A I'interprCtation de cas concrets.
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