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- DictionaryRip·ple marks/ˈripəl märks/
plural
- 1. a system of subparallel wavy ridges and furrows left on sand or mud by the action of water or wind, and sometimes fossilized.
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In geology, ripple marks are sedimentary structures (i.e., bedforms of the lower flow regime) and indicate agitation by water ( current or waves) or directly by wind . Defining ripple cross-laminae and asymmetric ripples.
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Ripple mark, one of a series of small marine, lake, or riverine topographic features, consisting of repeating wavelike forms with symmetrical slopes, sharp peaks, and rounded troughs.
- The Editors of Encyclopaedia Britannica
Nov 9, 2017 · Ripple marks are ridges of sediment that form in response to wind blowing along a layer of sediment. They are form perpendicular to the wind direction and each ridge is roughly equidistant from the ripple mark on either side.
Mar 30, 2023 · noun. 1. : one of a series of small ridges produced especially on sand by the action of wind, a current of water, or waves. 2. : a striation across the grain of wood especially on the tangential surface. ripple-marked. ˈri-pəl-ˌmärkt. adjective. Examples of ripple mark in a Sentence.
Figure \(\PageIndex{6}\): Modern current ripple in sand from the Netherlands. The flow creates a steep side down current. In this image, the flow is from right to left. Ripples are known by several names: ripple marks, ripple cross-beds, or ripple cross laminations. The ridges or undulations in the bed are created as sediment grains pile up on ...
In geology there are several types of ripples: centimeter-scale ripples or ripple marks, megaripples, which are higher than 5 cm and several meters wide, and sand dunes, which are large, meters to tens of meters high sand mounds.
May 8, 2018 · Ripples are an expression of the organization of moving grains into morphological elements collectively known as bedforms. Ripple marks fall principally into two broad classes: Eolian ripples and water-formed ripples (Allen 1982).
