Overdeepening | Article about overdeepening by The Free Dictionary
The erosive process by which a glacier deepens and widens an inherited preglacial valley to below the level of the subglacial surface.
References in periodicals archive
However, these occurrences could be biogenic, resulting from selective deposition of organic-rich detritus into glacial eroded valleys or overdeepening
serving as subaqueous depocentres.