ravinement

ravinement

[rə′vēn·mənt]
(geology)
The formation of a ravine or ravines.
An irregular junction which marks a break in sedimentation, such as an erosion line occurring where shallow-water marine deposits have cut down into slightly eroded underlying beds.
References in periodicals archive ?
Otherwise, shoreline ravinement during the transgression and erosion within the shoreface down to wave base during the highstand would bevel off any pre-existing shoreline.
Subaerial exposure during the Ypsilanti lowstand would be expected to have generated a weathering profile, an unconformity, and possibly a ravinement surface as a record of the regression-transgression cycle.
The beds exceed more than 2 m thickness in many places and, as can be seen on the bold, embayed cliff at the marsh-edge, rest sharply on a mainly wave-cut ravinement surface underlain by pale brown, banded silts of the Rumney Formation.
Les desordres majeurs etaientprovoques par le pourrissement des structures porteuses en bois, les defauts de mise en oeuvre, les enduits en mortier de ciment, le ravinement des fondations par les eaux souterraines et certaines adjonctions qui ont porte prejudice aux structures, qui ont ete restaurees en beton arme pendant l'epoque coloniale.
The early phase of the transgression was punctuated by a short wave ravinement event on the level of the Vadja and Leivu Fms boundary (WRS, Fig.
Por esta causa, y por el tipo de material que la integra, se interpreta como un deposito de ravinement generado durante la fase transgresiva.
8, separating the "paralic" unit "b" from the fully marine (shoreface) base of unit "c", is obviously characterized by a jump in facies and may be regarded as a shoreface ravinement surface generated during the westward shifting of the transgression.