Articles | Volume 17, issue 5
Clim. Past, 17, 2091–2117, 2021
Clim. Past, 17, 2091–2117, 2021

Research article 15 Oct 2021

Research article | 15 Oct 2021

Climate, cryosphere and carbon cycle controls on Southeast Atlantic orbital-scale carbonate deposition since the Oligocene (30–0 Ma)

Anna Joy Drury et al.

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Cited articles

Badger, M. P. S., Lear, C. H., Pancost, R. D., Foster, G. L., Bailey, T. R., Leng, M. J., and Abels, H. A.: CO2 drawdown following the middle Miocene expansion of the Antarctic Ice Sheet, Paleoceanography, 28, 42–53,, 2013. 
Bailey, I., Hole, G. M., Foster, G. L., Wilson, P. A., Storey, C. D., Trueman, C. N., and Raymo, M. E.: An alternative suggestion for the Pliocene onset of major northern hemisphere glaciation based on the geochemical provenance of North Atlantic Ocean ice-rafted debris, Quat. Sci. Rev., 75, 181–194,, 2013. 
Barry, T. L., Kelley, S. P., Reidel, S. P., Camp, V. E., Self, S., Jarboe, N. A., Duncan, R. A., and Renne, P. R.: Eruption chronology of the Columbia River Basalt Group, Spec. Pap. Geol. Soc. Am., 497, 45–66,, 2013. 
Beddow, H. M., Liebrand, D., Sluijs, A., Wade, B. S., and Lourens, L. J.: Global change across the Oligocene-Miocene transition: High-resolution stable isotope records from IODP Site U1334 (equatorial Pacific Ocean), Paleoceanography, 31, 81–97,, 2016. 
Beddow, H. M., Liebrand, D., Wilson, D. S., Hilgen, F. J., Sluijs, A., Wade, B. S., and Lourens, L. J.: Astronomical tunings of the Oligocene–Miocene transition from Pacific Ocean Site U1334 and implications for the carbon cycle, Clim. Past, 14, 255–270,, 2018. 
Short summary
We use the first high-resolution southeast Atlantic carbonate record to see how climate dynamics evolved since 30 million years ago (Ma). During ~ 30–13 Ma, eccentricity (orbital circularity) paced carbonate deposition. After the mid-Miocene Climate Transition (~ 14 Ma), precession (Earth's tilt direction) increasingly drove carbonate variability. In the latest Miocene (~ 8 Ma), obliquity (Earth's tilt) pacing appeared, signalling increasing high-latitude influence.