EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Assessing the well logging data from the Lake Bosumtwi (Ghana)

Christian Zeeden1, Mathias Vinnepand1, Stefanie Kaboth-Bahr2, William Gosling3, Jochem Kück4, and Thomas Wonik1
Christian Zeeden et al.
  • 1LIAG, Leibniz Institute for Applied Geophysics, S5, Hannover, Germany (
  • 2University of Potsdam, Institute for Geosciences, Karl-Liebknecht-Straße 24-26, 14476 Potsdam-Golm, Germany
  • 3University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands
  • 4GFZ Potsdam, Telegrafenberg, 14473 Potsdam, Germany

Insights into the climate variability of western Africa during the Pleistocene epoch have thus far been limited by the lack of well-dated, high-resolution terrestrial climate archives. The missing information on the climate evolution of western African hampers our understanding of the proposed pan-African evolution of our species. The ~294 m lacustrine sedimentary sequence raised from Lake Bosumtwi by the International Continental Drilling program in 2004, encompassing the last ~1.1 Ma, offers the best opportunity provide a climatic benchmark record in western Africa. However, the establishment of a chronology for this record has proven challenging. To try and improve our understanding of the climatic evolution during the last ~1.1 Ma in western Africa, we will use the high-resolution downhole logging data (natural gamma ray, GR) and magnetic susceptibility data from core logging from Site 5, which is situated in the centre of Lake Bosumtwi. To maximise the robustness of this record we will try to correlate data from downhole logs with core data. This approach has help improve interpretation of logging signals and environmental reconstructions for other long lake records, such as e.g. Lake Ohrid.

How to cite: Zeeden, C., Vinnepand, M., Kaboth-Bahr, S., Gosling, W., Kück, J., and Wonik, T.: Assessing the well logging data from the Lake Bosumtwi (Ghana), EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-10406,, 2022.