stratigraphy

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English

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Etymology

stratum +‎ -graphy c. 1841–1865.

Pronunciation

  • (US) IPA(key): /stɹəˈtɪɡ.ɹəfi/, /ˈstɹæt.əˌɡɹæf.i/
  • Audio (US)(file)

Noun

stratigraphy (countable and uncountable, plural stratigraphies)

  1. (geology) The study of rock layers and the layering process (stratification).
    • 2014, Elizabeth Kolbert, The Sixth Extinction: An Unnatural History, Picador, →ISBN, page 40:
      The study of stratigraphy was at this point in its infancy, but it was already understood that different layers of rocks had been formed during different periods.
    • 2022 October 27, Adrienne Berard, quoting Benjamin Cardenas, “Traces of ancient ocean discovered on Mars”, in phys.org‎:
      On Earth, we chart the history of waterways by looking at sediment that is deposited over time. We call that stratigraphy, the idea that water transports sediment and you can measure the changes on Earth by understanding the way that sediment piles up. That's what we've done here—but it's Mars.
  2. (archaeology) The layering of deposits, with newer remains overlaying older ones, forming a chronology of the site.

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