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The Ennedi Massif: Natural and cultural landscape – Chad’s second World Heritage site
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- 25 July 2016
18 years after an initiative taken by Stefan Kröpelin in 1999, UNESCO’s World Heritage Committee has unanimously inscribed the Ennedi plateau in the northeast of Chad as one of the rare mixed... -
Back from another mission in the Tibesti (Central Sahara)
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- 21 March 2016
A2 members just returned from another equally demanding as rewarding four-week expedition in the Tibesti mountains. The team comprised Quaternary geologist Stefan Kröpelin, archaeologist Jan Kuper,... -
Exhibition “Tibesti - Expedition in the Sahara” at the Kanzlergalerie
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- 03 February 2016
After the well-attended exhibitions on project A2’s geoarchaeological research and related World Heritage endeavours in Northern Chad which were shown in N’Djaména at the Chadian National Museum,... -
The paradox of the Tibesti crater palaeolakes (Sahara, Northwest Chad)
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- 09 December 2015
Recent field work in the Tibesti Mountains opens a new chapter in the reconstruction of the last climatic cycles in the central Sahara and their lacustrine environments. For the first time, complete... -
Ennedi mission
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- 26 November 2015
In October 2015, A2 members followed an invitation for a field trip in the Ennedi massif of NE Chad. Main purpose was the evaluation by experts of IUCN and ICOMOS of the proposal to get the “Garden... -
Exploring sedimentary basins in the East-African Rift Valley System
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- 23 November 2015
Three month after the first journey to Southern Ethiopia, a group of scientists from the Institute of Geophysics and Meteorology of the University of Cologne and Ethiopian colleagues from the... -
Applied Geophysics at Lake Chew Bahir, Southern Ethiopia
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- 10 June 2015
In November/December 2014, four scientists from the Institute of Geophysics and Meteorology of the University of Cologne conducted a five weeks field survey at Lake Chew Bahir, Southern Ethiopia... -
Into the Sahara Desert’s Deep Past. Expedition to the Remote Tibesti Mountains
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- 11 February 2015
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 spade into the crater of the highest mountain of the planet's major... -
The lakes of Ounianga – Chad's first UNESCO World Heritage site
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- 08 January 2013
The 19 lakes of Ounianga in the hyperarid desert of northeastern Chad are the Sahara's most important relic from her early- to mid-Holocene humid past. They constitute a unique hydrological system... -
Resolving sedimentary deposits in the Azraq Basin/Jordan using non-invasive geophysical techniques
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- 07 January 2013
A second geophysical field survey was undertaken in the Azraq Basin in October 2012. -
Advances in laboratory analyses of the Lake Yoa long core
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- 16 April 2012
While planned field work in Wadi Shati in Libya was impossible for obvious reasons, progress has been made on laboratory analyses of the 16 m long core (Co1240) from Lake Yoa/Ounianga Kebir (NE Chad). -
Exploring the subsurface – Geophysics in the Azraq Basin, Northern Jordan
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- 23 January 2012
Non-invasive surface geophysical techniques are a useful tool to investigate the earth’s subsurface structure. In order to identify suitable locations for future drilling projects, the Qa Al’ Azraq... -
Raising the Sahara’s most complete climate record
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- 10 June 2011
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...