リップルマーク

noun

ripple mark

Geological term for small wave-like ridges on sand or rock surfaces, formed by water or wind currents. Also referred to as 漣痕 (れんこん).

See also: 漣痕

• 地ち層そうの表ひょう面めんにリップルマークが残のこっている。

  Ripple marks remain on the surface of the stratum.