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/stɹəˈtɪɡ.ɹəfi/ · noun
(geology) The study of rock layers and the layering process (stratification)..
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.
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.
Use stratigraphy when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Stratigraphy means (geology) The study of rock layers and the layering process (stratification)..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
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.
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