stratigraphy

== English == === Etymology === From stratum +‎ -graphy c. 1841–1865. === Pronunciation === (US) IPA(key): /stɹəˈtɪɡ.ɹəfi/, /ˈstɹæt.əˌɡɹæf.i/ === Noun === stratigraphy (countable and uncountable, plural stratigraphies) (geology) The study of rock layers and the layering process (stratification). (archaeology) The layering of deposits, with newer remains overlaying older ones, forming a chronology of the site. ==== Derived terms ==== ==== Translations ==== === References === Douglas Harper (2001–2026), “stratigraphy”, in Online Etymology Dictionary. “stratigraphy, n.”, in OED Online ⁠, Oxford: Oxford University Press, launched 2000. === Further reading === stratigraphy on Wikipedia.Wikipedia