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Past river activity in northern Africa reveals multiple Sahara greenings

ScienceDaily (January 29, 2021)

Titre : Past river activity in northern Africa reveals multiple Sahara greenings

The analysis of sediment cores from the Mediterranean Sea combined with Earth system models tells the story of major environmental changes in North Africa over the last 160,000 years.

ScienceDaily (January 29, 2021)

Résumé
Large parts of today’s Sahara Desert were green thousands of years ago. Prehistoric engravings of giraffes and crocodiles testify to this, as does a stone-age cave painting in the desert that even shows swimming humans. However, these illustrations only provide a rough picture of the living conditions. Recently, more detailed insights have been gained from sediment cores extracted from the Mediterranean Sea off the coast of Libya. An international research team examined these cores and discovered that the layers of the seafloor tell the story of major environmental changes in North Africa over the past 160,000 years. Cécile Blanchet of the German Research Centre for Geosciences GFZ and her colleagues from Germany, South Korea, the Netherlands and the USA report on this in the journal Nature Geoscience

Story Source  : GFZ GeoForschungsZentrum Potsdam, Helmholtz Centre

Annonce (ScienceDaily)

Annonce (EureAlert)

Page publiée le 22 juin 2021