Earth and Environment Atlas

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Era origin year places an earth science concept in the year it was first proposed. Wikipedia records that Alfred Wegener is remembered for "suggesting in 1912 that the continents are slowly drifting around the Earth," an idea that took decades to become accepted science. Browsing by origin year traces how earth science ideas have built on each other over time.

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Stratigraphy is a branch of geology concerned with the study of rock layers (strata) and layering (stratification). 1
Era (Origin Year)
Sources
1. Stratigraphy (Wikipedia)
Wikimedia FoundationStratigraphy, lead section (concept-discipline bucket)
Quote, Stratigraphy, lead section (concept-discipline bucket)
Stratigraphy is a branch of geology concerned with the study of rock layers (strata) and layering (stratification).
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