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Project A2

Late Quaternary High-Resolution Climate Archives in the Sahara

Principal Investigators: S. Kröpelin, B. Tezkan, M. Melles

Since the occurrence of the Earth's first hominids in Northern Chad about 7 Ma ago, and particularly during the Late Quaternary, the Sahara has been the inevitable passageway for any migration between tropical Africa and Europe. The continuous varve-like sub bottom sediments of Lake Yoa, Ounianga Kebir (Northeast Chad), represent North Africa's most detailed climate archive. By extending the data set that exists for the middle and late Holocene to the early Holocene and possibly to the late Pleistocene at up to sub annual resolution, and conducting supplementary studies in the Western Sahara and Wadi Shati (central Libya), project A2 will attempt to compile a supra-regional standard for the Sahara and thus provide the palaeoclimatic framework for the archaeological projects in Africa.

1st Phase 2nd Phase
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806 A2 Poster 2013 small
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 2nd Phase - Posters presented at international Congresses & Workshops
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Raising the Sahara’s most complete climate record

Raising the Sahara’s most complete climate record

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...

Exploring the subsurface – Geophysics in the Azraq...

Exploring the subsurface – Geophysics in the Azraq Basin, Northern Jordan

Non-invasive surface geophysical techniques are a useful tool to investigate the earth’s subsurface structure. In order to identif...

Advances in laboratory analyses of the Lake Yoa lo...

Advances in laboratory analyses of the Lake Yoa long core

While planned field work in Wadi Shati in Libya was impossible for obvious reasons, progress has been made on laboratory analyses...

Resolving sedimentary deposits in the Azraq Basin/...

Resolving sedimentary deposits in the Azraq Basin/Jordan using non-invasive geophysical techniques

A second geophysical field survey was undertaken in the Azraq Basin in October 2012.  

The lakes of Ounianga – Chad's first UNESCO World...

The lakes of Ounianga – Chad's first UNESCO World Heritage site

The 19 lakes of Ounianga in the hyperarid desert of northeastern Chad are the Sahara's most important relic from her early- to mid...

Into the Sahara Desert’s Deep Past. Expedition to...

Into the Sahara Desert’s Deep Past. Expedition to the Remote Tibesti Mountains

It is hard to believe: We have sent a probe 500 million km to a comet to analyze rock samples, but no geologist has yet dug his sp...

Applied Geophysics at Lake Chew Bahir, Southern Et...

Applied Geophysics at Lake Chew Bahir, Southern Ethiopia

In November/December 2014, four scientists from the Institute of Geophysics and Meteorology of the University of Cologne conducted...

Exploring sedimentary basins in the East-African R...

Exploring sedimentary basins in the East-African Rift Valley System

Three month after the first journey to Southern Ethiopia, a group of scientists from the Institute of Geophysics and Meteorology o...

Ennedi mission

Ennedi mission

In October 2015, A2 members followed an invitation for a field trip in the Ennedi massif of NE Chad. Main purpose was the evaluati...

The paradox of the Tibesti crater palaeolakes (Sah...

The paradox of the Tibesti crater palaeolakes (Sahara, Northwest Chad)

Recent field work in the Tibesti Mountains opens a new chapter in the reconstruction of the last climatic cycles in the central Sa...

Exhibition “Tibesti - Expedition in the Sahara” at...

Exhibition “Tibesti - Expedition in the Sahara” at the Kanzlergalerie

After the well-attended exhibitions on project A2’s geoarchaeological research and related World Heritage endeavours in Northern C...

Back from another mission in the Tibesti (Central...

Back from another mission in the Tibesti (Central Sahara)

A2 members just returned from another equally demanding as rewarding four-week expedition in the Tibesti mountains. The team compr...

The Ennedi Massif: Natural and cultural landscape...

The Ennedi Massif: Natural and cultural landscape – Chad’s second World Heritage site

18 years after an initiative taken by Stefan Kröpelin in 1999, UNESCO’s World Heritage Committee has unanimously inscribed the Enn...

 

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