Crossword clues for Ridges, in geology. 4 letters:OSARGeological ridges.OSARGeologic ridges.OSARRidges, in geology.OSARGeological term for gravel ridges.ESKERGeological ridge.ESKERSGeological ridgesARETEGeological ridgeAASGeological ridge of sand.AASGeological ridge.ESKARRidge, in geology: Var.ESKERRidge of gravel, in geology.