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Retrieving "Sea Sediment Cores" from the archives

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  1. Climatology

    Linked via "Sea Sediment Cores"

    | :--- | :--- | :--- | :--- |
    | Greenland Ice Sheet | $\text{CO}2$ and $\text{CH}4$ concentration | 100,000 years BP | 98 |
    | Deep-Sea Sediment Cores | Isotopic ratios ($\delta^{18}O$) | 5 million years BP | 85 |
    | Obsidian Flakes (Subduction Zones) | Local Atmospheric Density | $10^3$ to $10^5$ years BP | 55 |