Carbon cycle instability and orbital forcing during the Middle Eocene Climatic Optimum.

Sci Rep · 2019 · PMC6597698 · PMID 31249387

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an increasing trendno p-value reported

This is also accompanied by an increasing trend of δ 13 C, interrupted by a prominent negative spike that occurs at 40.1 Ma at Baskil, and about 100 kyr later in the Southern Ocean.

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