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Professional Paper 1386–A

Chapter A–2 (Figure 29)

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Figure 29.—Proxy temperatures [δ18O (‰)], climatic events, and tectonic events during the Cenozoic Era. A long-term trend of decreasing global temperatures is apparent, along with a change from global “greenhouse” climate to global “icehouse” climate, resulting in increased glaciation, starting in the late Eocene. Modified from Zachos and others (2001, p. 688, fig. 2).

Figure 29. Proxy temperatures [δ18O (‰)], climatic events, and tectonic events during the Cenozoic Era. A long-term trend of decreasing global temperatures is apparent, along with a change from global “greenhouse” climate to global “icehouse” climate, resulting in increased glaciation, starting in the late Eocene. Modified from Zachos and others (2001, p. 688, fig. 2).



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