In geology, the sedimentary structures known as "'cross-bedding "'are the ( near-) horizontal units that are internally composed of inclined deformation.
22.
It is now recognized that the vertical progression of sedimentary structures described by Bouma applies to turbidites deposited by low-density turbidity currents.
23.
Very similar sedimentary structures have been observed in a thick tsunami deposit related to the asteroid impact at the Cretaceous Paleogene boundary
24.
These sedimentary structures are not common because they require the current to be equal in both directions, which rarely happens in nature.
25.
This vertical succession of sedimentary structures, bedding, and changing lithology is representative of strong to waning flow regime currents and their corresponding sedimentation.
26.
Evidence for the dating is provided by the sedimentary structures and the type of fossils found within the rocks which are well preserved.
27.
In sedimentology, his most influential publications were on turbidity currents and their deposits, and on the origin of physical sedimentary structures and textures.
28.
Though most sedimentary structures are not visible due to the gypsum interruption, there are a few examples of ripple marks and occasional crossbedding.
29.
Both specimens are very similar in morphology to sedimentary structures initially interpreted to be fossil jellyfish and named " Astropolithon . "
30.
Sedimentary structures found in this member include, salt crystal casts in the mudstone, and asymmetrical ripple marks and small-scale cross beds, in the sandstones.
