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GEOREF RECORD

Late Holocene palaeohydrology of Lake Afourgagh (Middle-Atlas, Morocco) from deposit geometry and facies

Sebastien Detriche, Jean-Gabriel Breheret, Hamid Zarki, L'houcine Karrat, Jean-Jacques Macaire and Michel Fontugne
Late Holocene palaeohydrology of Lake Afourgagh (Middle-Atlas, Morocco) from deposit geometry and facies
Bulletin de la Societe Geologique de France (January 2008) 179 (1): 41-50

Abstract

The geometry and facies of deposits in lake Afourgagh (Middle-Atlas, Morocco) provide evidence for successive major lake level fluctuations during the last 2,500 years. Sedimentation is mainly biogenic with the laying down of thick charophyte-rich tufas interbedded with silty layers in distal areas and palaeosols in proximal areas. These alternations point to four major deposit sequences with lowstand phases. The first two phases are dated at ca. 2426 and 1869 cal B.P. These events appear to be linked to major arid episodes on a regional scale. However, climatic impact has been modulated by human activities, particularly during recent decades.


ISSN: 0037-9409
EISSN: 1777-5817
Coden: BSGFAE
Serial Title: Bulletin de la Societe Geologique de France
Serial Volume: 179
Serial Issue: 1
Title: Late Holocene palaeohydrology of Lake Afourgagh (Middle-Atlas, Morocco) from deposit geometry and facies
Affiliation: Universite Francois Rabelais, Faculte des Sciences et Techniques, Tours, France
Pages: 41-50
Published: 200801
Text Language: English
Summary Language: French
Publisher: Societe Geologique de France, Paris, France
References: 42
Accession Number: 2008-089783
Categories: Quaternary geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sects., 1 table, geol. sketch maps
N32°15'00" - N34°00'00", W06°15'00" - W03°19'60"
Secondary Affiliation: Universite Sidi Mohamed Ben Abdellah, MAR, MoroccoLaboratoire des Sciences du Climat et de l'Environnement, FRA, France
Country of Publication: France
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Societe Geologique de France. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 200828
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