cross-stratification
Americannoun
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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.
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◆ Cross-stratification in which the individual strata are greater than 1 cm (0.39 inch) in thickness is called cross-bedding.
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◆ Cross-stratification in which the individual strata are less than 1 cm (0.39 inch) in thickness is called cross-lamination.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
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
These sediment layers are typically finely laminated and may contain hummocky cross-stratification.
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
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
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
