TY - JOUR
T1 - Pleistocene high sea level stands in the Agadir area
T2 - Review of available chronological data
AU - Balescu, Sanda
AU - Weisrock, André
AU - Huot, Sébastien
AU - Lamothe, Michel
AU - Ghaleb, Bassam
AU - Ouammou, Abderrahmane
AU - Rousseau, Louis
AU - Abdessadok, Salah
N1 - Publisher Copyright:
© 2017 Elsevier Masson SAS
PY - 2017/5
Y1 - 2017/5
N2 - The IRSL dating method has been applied to K-feldspars (150-250 microns) from littoral deposits (marine and dune sands, lagoonal silt) in the Agadir area, belonging to three successive raised Pleistocene paleoshorelines, assigned to the Ouljian (MIS 5), the Agadirian (MIS 7/9?) and the Maarifian (MIS 11?) stages. These IRSL ages are compared with (1) U/Th ages measured on mollusc shells and (2) D/L ratio on Patella. The IRSL ages of the Ouljian sandy marine samples collected at Aghroud (+ 5 m a.s.l) and Tamraght (+ 4 m a.s.l.) are in good agreement with the U-Th ages on molluscs and comfort thereby the MIS 5 age of these marine deposits. The IRSL ages of the marine and dune sand deposits obtained at Agadir Founti (previous “Agadir-Port”), the type locality for the Agadirian formation, demonstrate that the younger Agadirian beach (+ 20–25 m a.s.l.) is correlated with MIS 7, in agreement with the U/Th ages and the amino-acid data. The older Agadirian beach, presently inaccessible, could not be dated by IRSL but mollusc shells previously collected yield a U/Th age which might suggest a correlation with early MIS 9 (?). The preliminary IRSL age of the lagoonal silt deposit collected at Assif Lamahyane suggests a MIS 11 age.
AB - The IRSL dating method has been applied to K-feldspars (150-250 microns) from littoral deposits (marine and dune sands, lagoonal silt) in the Agadir area, belonging to three successive raised Pleistocene paleoshorelines, assigned to the Ouljian (MIS 5), the Agadirian (MIS 7/9?) and the Maarifian (MIS 11?) stages. These IRSL ages are compared with (1) U/Th ages measured on mollusc shells and (2) D/L ratio on Patella. The IRSL ages of the Ouljian sandy marine samples collected at Aghroud (+ 5 m a.s.l) and Tamraght (+ 4 m a.s.l.) are in good agreement with the U-Th ages on molluscs and comfort thereby the MIS 5 age of these marine deposits. The IRSL ages of the marine and dune sand deposits obtained at Agadir Founti (previous “Agadir-Port”), the type locality for the Agadirian formation, demonstrate that the younger Agadirian beach (+ 20–25 m a.s.l.) is correlated with MIS 7, in agreement with the U/Th ages and the amino-acid data. The older Agadirian beach, presently inaccessible, could not be dated by IRSL but mollusc shells previously collected yield a U/Th age which might suggest a correlation with early MIS 9 (?). The preliminary IRSL age of the lagoonal silt deposit collected at Assif Lamahyane suggests a MIS 11 age.
KW - Agadir area
KW - IRSL
KW - Marine deposits
KW - Middle and Upper Pleistocene
UR - http://www.scopus.com/inward/record.url?scp=85016503856&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85016503856&partnerID=8YFLogxK
U2 - 10.1016/j.anthro.2017.03.010
DO - 10.1016/j.anthro.2017.03.010
M3 - Article
AN - SCOPUS:85016503856
SN - 0003-5521
VL - 121
SP - 102
EP - 111
JO - Anthropologie (France)
JF - Anthropologie (France)
IS - 1-2
ER -