Journal articles
Evolution holocène de la Tunisie saharienne et présaharienne
Abstract : Tunisian saharian and presaharian Holocene period can be divided into four subperiods. Lower Holocene (10 000 B.P. to about 7 000 B.P.) is characterized by increasing humidity (stabilization of dunes, reappearance of lakes, accumulation of lower terrace and genesis of Holocene glacis). A short dry phase probably took place between 7 500 and 7 000 B.P. Middle Holocene (7 000 - 3 500 B.P. ?) is probably the climatic optimum subperiod (end of lower terrace building up, pedogenesis developping and evidences of good hydrological conditions). A progressive climatic aridification began during prehistoric upper Holocene (cutting-down of lower terrace and deflation). A probable short humid phase about 2 400 B.P. marked the beginning of historic upper Holocene that is characterized by building up then cutting-down of very low terrace and, last, by mobilization of aeolian sands due to desrtification.
Cited literature [6 references]
https://hal-amu.archives-ouvertes.fr/hal-01562627
Contributor : Jean-Louis Ballais Connect in order to contact the contributor
Submitted on : Thursday, July 20, 2017 - 2:48:56 PM
Last modification on : Thursday, March 5, 2020 - 6:58:49 PM
Long-term archiving on: : Friday, January 26, 2018 - 11:48:46 PM
Contributor : Jean-Louis Ballais Connect in order to contact the contributor
Submitted on : Thursday, July 20, 2017 - 2:48:56 PM
Last modification on : Thursday, March 5, 2020 - 6:58:49 PM
Long-term archiving on: : Friday, January 26, 2018 - 11:48:46 PM
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Evolution holocène de laTunis...
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