Last Updated on August 8, 2023 by Paganoto
Chapter 4: Sedimentary Structures – The Story of Earth
Chapter 4: Sedimentary Structures – The Story of Earth
These types of ripple marks can tell you which direction the river was flowing because sediment moves up the shallow side of the ripple and gets deposited …
6.4 Sedimentary Structures and Fossils – Physical Geology
6.4 Sedimentary Structures and Fossils – Physical Geology
One bed dips in the opposite direction, implying an abnormal wind. Cross-beds form as sediments are deposited on the leading edge of an advancing ripple or dune …
Way-up structures – Historical Geology – OpenGeology
Way-up structures – Historical Geology – OpenGeology
Ripples and dunes form in a directional current of either water or air. They accumulate at the angle of repose for that size of sedimentary particle, and within …
Sedimentary Structures
Sedimentary Structures
RIPPLE MARKS are produced by flowing water or wave action, analogous to cross-bedding (see above), only on a smaller scale (individual layers are at most a few …
10.5: Sedimentary Structures – Geosciences LibreTexts
10.5: Sedimentary Structures – Geosciences LibreTexts
Ripple Marks, Either symmetrical or asymmetrical ripples present on bedding surfaces. Water or air currents. Asymmetrical ripples indicate …
5.4: Sedimentary Structures – Geosciences LibreTexts
5.4: Sedimentary Structures – Geosciences LibreTexts
Ripples are known by several names: ripple marks, … the most common sedimentary structure found within channelized flows of air or water.
Cross Bedding
Cross Bedding
The cross-beds reflect the steep faces of ripples and dunes. These steep faces tilt down-current and thus indicate current flow direction.
Crossbedding
Crossbedding
Cross bedding forms on a sloping surface such as ripple marks and dunes, and allows us to interpret that the depositional environment was water or wind.
What are Ripple Marks? – Geology Page
What are Ripple Marks? – Geology Page
They are form perpendicular to the wind direction and each ridge is … The symmetry of water–current ripple marks indicate whether they …
How do we know which way is up? #2 Ruffles and desiccation
How do we know which way is up? #2 Ruffles and desiccation
formation of ripples, seen as crossbeds in ancient rocks, using modern examples to interpret the past, mud cracks, sedimentary structures.
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