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

Drury, Anna Joy; Liebrand, Diederik; Westerhold, Thomas; Beddow, Helen M.; Hodell, David A.; Rohlfs, Nina; Wilkens, Roy H.; Lyle, Mitchell; Bell, David B.; Kroon, Dick; Pälike, Heiko; Lourens, Lucas J.

doi:https://doi.org/10.5194/cp-17-2091-2021

Articles | Volume 17, issue 5

https://doi.org/10.5194/cp-17-2091-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/cp-17-2091-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 5

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, Diederik Liebrand, Thomas Westerhold, Helen M. Beddow, David A. Hodell, Nina Rohlfs, Roy H. Wilkens, Mitchell Lyle, David B. Bell, Dick Kroon, Heiko Pälike, and Lucas J. Lourens

Supplement

https://doi.org/10.5194/cp-17-2091-2021-supplement

Data sets

Climate, cryosphere and carbon cycle controls on Southeast Atlantic orbital-scale carbonate deposition since the Oligocene (30-0 Ma) A. J. Drury, D. Liebrand, T. Westerhold, H. M. Beddow, D. A. Hodell, N. Rohlfs, R. H. Wilkens, M. W. Lyle, D. B. Bell, D. Kroon, H. Pälike, and L. J. Lourens https://doi.org/10.1594/PANGAEA.919489

Video supplement

Disentangling the controls and orbital pacing of South-East Atlantic carbonate deposition since the Oligocene (30–0 Ma) A. J. Drury, D. Liebrand, T. Westerhold, H. Beddow, D. A. Hodell, N. Rohlfs, R. H. Wilkens, M. Lyle, D. B.., Bell, D. Kroon, D. De Vleeschouwer, M. Vahlenkamp, F. Rochholz, H. Palike, and L. J. Lourens https://youtu.be/G30Eo0twx9s

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.