Cross Stratification/Lamination Geometry (sed strat)

[@bharatchoudhury3383]

Madam , you are just awosome

[@ryanwilson3526]

Thank you, this is video is very interesting! So in the bottom diagram at the end of the video, would that be an idealistic representation of how strata might look preserved in the field with grain rolling as the main grain transport mechanism?

[@sumnerd]

Yes, it is

[@negrura04]

thanks for the video!! I want to ask you something what is the difference between cross stratification and epsilon cross stratitification? thank youu

[@sumnerd]

Cross stratification comes in many different types. It refers to a geometry in sand or sandstone where at least some of the layers are eroded away by younger flows and more sand is deposited on top. Epsilon cross stratification is a very specific type of cross stratification where the layers thin to zero thickness at their lowest point, thicken where the are sloping, and then thin to zero again at the top. This type of cross stratification forms when bars migrate in meandering rivers. It's described here: www.seddepseq.co.uk/depositional_env/fluvial/meander/meander.htm#ECS