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Explain how past temperatures are determined using oxygen-isotope analysis.

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Answered 7 months ago
Answered 7 months ago

The measurement of the ratio between 16^{16}O and 18^{18}O is the basis of oxygen isotope analysis\textbf{oxygen isotope analysis}. During glacial periods glaciers grow faster and bind more of the lighter 16^{16}O isotope. Conversely, during interglacial periods the amount of glacial ice decreases returning more of the 16^{16}O isotope to the sea.

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