cross-stratification

American  

[kraws-strat-uh-fi-kay-shuhn, krahs-] / ˌkrɔsˌstræt ə fɪˈkeɪ ʃən, ˌkrɑs- /

noun

1. Geology. cross-bedding.

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cross-stratification Scientific  

1. An arrangement of sediment strata deposited at an angle to the main stratification. The most common type of cross-stratification is produced by the migration of sand dunes or ripples.

2. ◆ Cross-stratification in which the individual strata are greater than 1 cm (0.39 inch) in thickness is called cross-bedding.

3. ◆ Cross-stratification in which the individual strata are less than 1 cm (0.39 inch) in thickness is called cross-lamination.

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Example Sentences

These sediment layers are typically finely laminated and may contain hummocky cross-stratification.

From Textbooks • Jan. 1, 2017

These beds are called hummocky cross-stratification and have a 3D architecture of hills and valleys, with inclined and declined layering that matches the dune shapes.

From Textbooks • Jan. 1, 2017

For anyone about to begin their study of geology, cross-stratification, or cross-bedding, will be one of the first topics to be covered in "sedimentary processes", and Shaler is a beautiful example.

From BBC • May 8, 2013

Shaler is a classic example of cross-stratification - a process that produces thin, inclined layers of sediment.

From BBC • May 8, 2013

You have read Dufrenoy in a hurry, I think, and added to the difficulty—it is the whole hill or "colline" which is composed of tuff with cross-stratification; the central boss or "monticule" is simply trachyte.

From More Letters of Charles Darwin — Volume 2 by Darwin, Francis, Sir