5.4: Sedimentary Structures - Geosciences LibreTexts
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 top of the plane bed. With the exception of dunes, the scale of these beds is typically measured in centimeters.
Ripple marks - Wikipedia
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
(PDF) Ripple Marks - ResearchGate
2019年3月29日 · In the modern era, ripples are recognized easily (by almost anyone) by their scale, morphology, and setting. In the geological record, it is the characteristic internal structure of...
61.2: Sedimentary way-up structures - Geosciences LibreTexts
2024年4月11日 · Ripple marks. Ripple marks are the 3D expression of the same phenomenon as cross-bedding: the actual bedform’s shape exposed in lithified form. They can be either symmetrical or asymmetrical. The 3D model below shows a great example of aysmmetric ripple marks, the kind that form in a unidirectional current.
Cross-bedding and ripple marks have received more attention from geologists than all other directional structures combined. Cross-bedding is shown rather commonly on geologic sections and drawings of the early 19th century indicating that it was recognized almost from the beginnings of modern observational geology.
Cross-Bedding and Ripple Marks | SpringerLink
Cross-bedding and ripple marks have received more attention from geologists than all other directional structures combined. Download to read the full chapter text Chapter PDF
Cross-Bedding and Ripple Marks (1963–1976) | SpringerLink
The study of cross-bedding and ripple mark in ancient sediments and of bedforms and sand-wave systems in flumes and modern environments is now commonplace; only the study of turbidite structures and processes is comparable. Certainly cross-bedding continues to be the...
Cross-Bedding and Ripple Marks (1963–1976) - Semantic Scholar
The study of cross-bedding and ripple mark in ancient sediments and of bedforms and sand-wave systems in flumes and modern environments is now commonplace; only the study of turbidite structures and processes is comparable.
Cross-bedding - Wikipedia
Cross-bedding forms during deposition on the inclined surfaces of bedforms such as ripples and dunes; it indicates that the depositional environment contained a flowing medium (typically water or wind). Examples of these bedforms are ripples, dunes, anti-dunes, sand waves, hummocks, bars, and delta slopes. [1] .
Visualizing Cross Bedding and Ripple Marks - Brian Williams
2023年6月26日 · This typically occurs when water or wind carry sediment along an inclined surface and deposit it in layers, forming cross beds. The incline of the beds increases with the distance from the source. Cross beds are common features in sedimentary rocks and can provide clues about the direction of wind or water flow at the time of deposition.
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