3: Sediments - the Memory of the Ocean
- Page ID
- 421
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- 3.4: Reconstructing Earth history
- Ocean sediments can help us reconstruct Earths history. The sediments deposited on the ocean floor often have markers of the Earths environment when they were deposited and can tell us a lot about how the environment of our planet has changed throughout its history. Scientists have used sediment cores, long vertical tubes of sediment drilled from the bottom of the ocean, to estimate how the ocean reacts to global temperature changes.