cross-stratification

American  

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

noun

1. Geology. cross-bedding.

---

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.

---

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

Two of their colleagues on the work have some particularly nice web resources related to cross-stratification.

From BBC • May 8, 2013

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

They present frequent traces of cross-stratification, alternating with regularly stratified horizontal beds, with here and there an intervening layer of clay.

From The Atlantic Monthly, Volume 18, No. 105, July 1866 by Various