The study of rock strata, especially the distribution, deposition, and age of sedimentary rocks.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "stratigraphy" in a sentence
"The technical name for these layers is strata, and the careful study of them is called stratigraphy."
"Radiocarbon dating was still in the future, so archaeologists used relative methods of dating such as stratigraphy and stone tool typologies to deduce the age of a site."
"The KT boundary was refined using a range of techniques such as stratigraphy & fossils, various radiometric techniques etc. - kinda like multi-proxies."