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]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]