cataclinal

from WordNet (r) 3.0 (2006)

cataclinal
    adj 1: of valleys and rivers; running in the direction of the
           dip in surrounding rock strata [ant: {anaclinal}]

from The Collaborative International Dictionary of English v.0.48

cataclinal \cataclinal\ adj. (Geol)
   running in the direction of the dip in surrounding rock
   strata; -- of valleys and rivers. Opposite of {anaclinal}.
   [WordNet 1.5]