Figure F6. Comparison of Cretaceous d18O-temperature records indicate a 20- to 40-m.y. mismatch between peak CretaceousCenozoic warmth and peak CretaceousCenozoic tectonic CO2 production inferred from ocean crust cycling (after Wilson et al., 2002). Open symbols = "glassy" foraminifers from the low-latitude western Atlantic, Gulf Coast, and Tanzania. Solid symbols = bulk carbonate from the high-latitude southern Indian Ocean. All temperatures are conservative values calculated assuming dw = mean Cretaceous seawater and would be 3°6°C higher if modern latitudinal trends in dw were applied. VPDB = Vienna Peedee belemnite.
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