an alluviated valley
Useful english dictionary. 2012.
alluviate — al·lu·vi·ate … English syllables
illuviate — iˈlüvēˌāt also ilˈyü intransitive verb ( ed/ ing/ s) Etymology: in (II) + luviate (as in alluviate) : to undergo illuviation * * * /i looh vee ayt /, v.i., illuviated, illuviating. 1. to undergo illuviation … Useful english dictionary