Coring the complete set of deposits at the bottom of a desert lake in northeast Chad in one of the driest and most isolated parts of the Sahara has been the main objective of project A2 for the current funding period.

During a successful expedition in 2010, the previous 7.5 m sediment record could be extended down to the sandstone bedrock at a maximum drill depth of 15.7 m. The extracted sediments cover the entire Holocene (~ 11,000 years) to the present day at mostly subannual resolution and thus represent the most complete and detailed climate archive in Northern Africa.


Work at Lake Yoa, Ounianga Kebir, Chad.
Photo: Stefan Kröpelin
  a2_fig_2_lhk_250px Participants of 2010 field campaign.
Photo: Stefan Kröpelin



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