Last Updated on December 26, 2023 by Paganoto
Ripples and Dunes
Ripples and Dunes
Ripples and dunes are useful because they are fairly commonly preserved in the sedimentary record. Assymetrical ripples and dunes form when current flows in …
Ripple marks – Wikipedia
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 wind.
Bedforms: ripples and dunes – Geology is the Way
Bedforms: ripples and dunes – Geology is the Way
Ripples, dunes, antidunes are all bedforms, structures that form in sand when it is moved by water or wind. Bedforms are ubiquitous on our planet.
True substrates: The exceptional resolution and unexceptional …
True substrates: The exceptional resolution and unexceptional …
by NS Davies · 2021 · Cited by 11 — Rock outcrops of the sedimentary–stratigraphic record often reveal bedding planes that can be considered to be true substrates: preserved …
Beach sand ripples can be fingerprints for ancient weather …
Beach sand ripples can be fingerprints for ancient weather …
Beach sand ripples can be fingerprints for ancient weather conditions, according to a new MIT study. The new experiments show how shifting …
Snowball Earth climate dynamics and Cryogenian geology …
Snowball Earth climate dynamics and Cryogenian geology …
by PF Hoffman · 2017 · Cited by 326 — However, an ice-covered planet with Earth-like obliquity and distance (1 astronomical unit) … In contrast, the Cryogenian fossil record has low total and …
coastal and shoreface habitats of the ediacaran macrobiota, the
coastal and shoreface habitats of the ediacaran macrobiota, the
by WJ McMahon · 2020 · Cited by 9 — C) Symmetrical ripple marks. Poor example is deliberately chosen to emphasize that many key sedimentary surface textures in this facies are poorly exposed. …
Geologic Road Signs – Montana Department of Transportation
Geologic Road Signs – Montana Department of Transportation
Sediments in the water deposited thin beds of sand, mud, and calcium carbonate. The surfaces of the rocks often display mud cracks, ripple marks, and the …
The Principles of Geology | Marcellus Community Science
The Principles of Geology | Marcellus Community Science
If you see ripple marks in the rock record, you can know that a similar process was at work. A geologist contemplates the ripples formed in a mountain stream …
Arches National Park Geologic Resource Evaluation Report
Arches National Park Geologic Resource Evaluation Report
The 76,359 acres of Arches National Park (ARCH) in east- central Utah preserves the greatest concentration of rock arches in the world. In addition to the …
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