A system of subparallel wavy ridges and furrows left on sand or mud by the action of water or wind, and sometimes fossilized.
More example sentences
- The second clue is that many of the rocks have very conspicuous ripple marks on, which at least at first glance resemble those we might find on a common day seashore.
- The absence of symmetrical ripple marks indicates that the site of deposition was protected from wave action.
- The pattern of ripple marks and other features locked in southwestern Utah's sandstone indicates that the mineral grains had been blown in from those directions.
Definition of ripple marks in:
- The British & World English dictionary