 |
| Titel |
Constraining the CO2 system of the early Cenozoic Greenhouse with boron
isotopes |
| VerfasserIn |
Matthew A. Kaminski, James W. B. Rae, Philip F. Sexton, Eleni Anagnostou, Gavin L. Foster, Sarah Greene, Rosanna Greenop, Sandra Kirtland-Turner, Andy Ridgwell |
| Konferenz |
EGU General Assembly 2017
|
| Medientyp |
Artikel
|
| Sprache |
en
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250153940
|
| Publikation (Nr.) |
 EGU/EGU2017-18979.pdf |
|
|
|
|
|
| Zusammenfassung |
| The CO2 dynamics of the early Cenozoic Greenhouse remain poorly understood: estimates of
past atmospheric CO2 concentrations over this time are high but variable, and discussion
remains on the driving mechanisms of long term changes in carbon cycling. This climatic
state also provides the backdrop for numerous hyperthermal events, including the PETM,
which may provide crucial insights to the current carbon cycle perturbation. This research
aims to shed light on the state of the ocean carbonate system in the Paleocene and
Early Eocene. We present new boron isotope data from benthic foraminifera, which
can be used to reconstruct relative changes in ocean pH. These are coupled with
modelling experiments performed with cGenie Earth system model runs to give
new constraints on the carbon cycle and carbonate system of the early Cenozoic. |
|
|
|
|
|
|