Abstracts
Abstract
Injection of semi-fluid silt/water suspensions Into semi-fluid sand/cement slurries resulted In the formation of a variety of structures at the Interface between the two materials. These structures resemble flute, load, groove and rldga-caats and form as a result of flow-moulding ('rheoplasis')• These experimental results complement earlier work' on certain natural occurrences of these structures and substantiate the hypothesis that they form as a result of post-deposltlonal sediment movement and not through primary sedimentary processes.
RESUME
L'Injection de suspensions aqueuses seral-fluldes de llmon dans dea melanges seml-fluldes de sable et de clment a produit une variete de formes 3 la surface de contact des deux materlaux. Ces formes, qui resseablent aux empreintes de charge, flStes, cannelures et cretes, resultent du moulage d'une coulSe ('rheoplasle'). Les resultats de ces experiences complementent des travaux anterieurs qui traitent d'exemples naturels de ces formes et appulent l'hypothese selon laquelle cea formes rgsultent du mouvement des sediments apr&s leur deposition «t non pas de processus a£d linen t aires primal res.
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