Results 281 to 290 of about 222,252 (333)
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Science, 2006
In the Sahara region, the age of onset of the desert condition has been uncertain until now. Here we report on the discovery of 7,000,000-year-old eolian dune deposits from the northern Chad Basin. This geological archive is the oldest known evidence for desert occurrence in the Sahara.
Schuster, M. +6 more
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In the Sahara region, the age of onset of the desert condition has been uncertain until now. Here we report on the discovery of 7,000,000-year-old eolian dune deposits from the northern Chad Basin. This geological archive is the oldest known evidence for desert occurrence in the Sahara.
Schuster, M. +6 more
openaire +4 more sources
2020
AbstractThis chapter introduces the neglected Islamic archaeology of the Sahara. First, it draws together for the first time some of the important but little-known archaeological sites of the early Islamic Sahara. This is then followed by an exploration of key research themes: trade; urban planning and architecture; technology; religion and the early ...
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AbstractThis chapter introduces the neglected Islamic archaeology of the Sahara. First, it draws together for the first time some of the important but little-known archaeological sites of the early Islamic Sahara. This is then followed by an exploration of key research themes: trade; urban planning and architecture; technology; religion and the early ...
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2017
This chapter discusses the collection of objects, in clay and stone, from various pastoral Saharan sites whose original core area lay between Libya (Tadrart Acacus) and Algeria (Tassili- n-Ajjer). The chapter starts from the general theme of the relationship between the figurines and the subjects they represent, and the difference between two ...
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This chapter discusses the collection of objects, in clay and stone, from various pastoral Saharan sites whose original core area lay between Libya (Tadrart Acacus) and Algeria (Tassili- n-Ajjer). The chapter starts from the general theme of the relationship between the figurines and the subjects they represent, and the difference between two ...
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2002
Abstract The Sahara, which derives its name from the Arabic word sahra, meaning desert or wilderness, is the world’s largest desert. It covers an area of around 7 to 9 million km2 (Tucker et al., 1991) and thus has a similar area to the USA (including Alaska).
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Abstract The Sahara, which derives its name from the Arabic word sahra, meaning desert or wilderness, is the world’s largest desert. It covers an area of around 7 to 9 million km2 (Tucker et al., 1991) and thus has a similar area to the USA (including Alaska).
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Nature, 1971
IT has often been said that the inhabitants of arid regions seem to require far less fluid than non-indigenous visitors1, but opinions vary as to whether this discrepancy is attributable to ethnic differences in the inherent physiological mechanisms which are concerned with sweating and water metabolism, or to cultural-adaptive factors such as diet ...
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IT has often been said that the inhabitants of arid regions seem to require far less fluid than non-indigenous visitors1, but opinions vary as to whether this discrepancy is attributable to ethnic differences in the inherent physiological mechanisms which are concerned with sweating and water metabolism, or to cultural-adaptive factors such as diet ...
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Early Holocene greening of the Sahara requires Mediterranean winter rainfall
Proceedings of the National Academy of Sciences of the United States of America, 2021Rachid Cheddadi +2 more
exaly
The International Journal of African Historical Studies, 1990
Daniel F. McCall, Alfred Muzzolini
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Daniel F. McCall, Alfred Muzzolini
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