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The top documents tagged [years of geologic time]
Slow Emotion, Studium Generale, Royal Academy of Art - May2010
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Chapter 8 Precambrian Earth and Life History— Hadean and Archean The Precambrian lasted for 4 b.y., 88% of estimated geologic time. No rocks are known
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Chapter 8 Precambrian Earth and Life History—The Archean Eon
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Determining geological ages ◊Relative age dates – placing rocks and events in their proper sequence of formation ◊Numerical dates – specifying the actual
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1955 Cesare Emiliani (1922-1995), Geochemist He used the newly established technique of investigating different isotopes of oxygen (Oxygen-18 vs. Oxygen-16)
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