EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

IODP Expedition 378 South Pacific Paleogene Climate: New high-resolution high-latitude Cenozoic Section

Ursula Röhl1, Deborah J Thomas2, Laurel Childress3, and the Expedition 378 Science Party*
Ursula Röhl et al.
  • 1MARUM, University of Bremen, Bremen, Germany (
  • 2College of Geosciences, Texas A & M University, College Station, Texas, USA (
  • 3International Ocean Discovery Program, Texas A&M University, College Station, Texas, USA (
  • *A full list of authors appears at the end of the abstract

As the world’s largest ocean, the Pacific Ocean is intricately linked to major changes in the global climate system. International Ocean Discovery Program (IODP) Expedition 378 is designed to recover Paleogene sedimentary sections in the South Pacific to reconstruct key changes in oceanic and atmospheric circulation. These cores will provide an unparalleled opportunity to add crucial new data and geographic coverage to existing reconstructions of Paleogene climate and as part of a major regional slate of expeditions in the Southern Ocean to fill a critical need for high-latitude climate reconstructions. Appropriate high-latitude records are unobtainable in the Northern Hemisphere of the Pacific Ocean.

The drilling strategy included a transect of sites strategically positioned in the South Pacific to recover Paleogene carbonates buried under red clay sequences at present latitudes of 40°–52°S in 4650 – 5075 meters of water depth. Due to technical issues we no longer will be able to reach the deeper sites. Therefore, the focus of Expedition 378 will be now to obtain a continuous sedimentary record of a previously single hole, rotary-drilled, spot-cored, classic Cenozoic high-latitude DSDP Site 277 and provide a crucial, multiple hole, mostly APC-cored, continuous record of the intermediate-depth Subantarctic South Pacific Ocean from the Latest Cretaceous to late Oligocene.

Expedition 378 Science Party:

Deborah J. Thomas, Ursula Röhl, Laurel Childress, Eleni Anagnostou, Blanca Ausín, Bruna Borba Dias, Flavia Boscolo Galazzo, Swaantje Brzelinski, Ann G. Dunlea, Simon C. George, Laura L. Haynes, Ingrid L. Hendy, Heather L. Jones, Sonal S. Khanolkar, Gabriella D. Kitch, Hojun Lee, Isabella Raffi, Alex J. Reis, Rosie M. Sheward, Elizabeth Sibert, Erika Tanaka, Roy Wilkens, Kazutaka Yasukawa, Wei Yuan, Qiang Zhang, Yang Zhang

How to cite: Röhl, U., Thomas, D. J., and Childress, L. and the Expedition 378 Science Party: IODP Expedition 378 South Pacific Paleogene Climate: New high-resolution high-latitude Cenozoic Section, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-8872,, 2020