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Sea Level Fluctuation During the Past 6000 yr at the Coast of Mauritania

  • G. Einsele (a1), D. Herm (a1) and H.U. Schwarz (a2)
Abstract

In an area regarded to be very favorable for the study of Holocene sea level changes one or several eustatic (?) oscillations of sea have been found using sedimentological and ecological methods. After a maximum of +3 m during the Nouakchottian stage (= Middle Flandrian or Late Atlantic) about 5500 YBP a drop of sea to −3.5 ± 0.5 m about 4100 YBP is testified by stromatolitic algae indicating the former sea level within the tidal zone with high accuracy. This evidence is supported by the observation of post-Nouakchottian regressive and transgressive geologic sequences, by buried beach deposits and flooded hardgrounds, post-Nouakchottian marine terraces of different height and age, the cutting off of one large and several small bays from the open sea, etc. Possibly one or two smaller oscillations followed between 4000 and 1500 YBP (derived sea level curve Fig. 3).

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Einsele, G., Herm, D., Schwarz, H.U., (1974). Holocene eustatic (?) sea level fluctuation at the coast of Mauritania. Meteor Forschungsergebnisse C 11, in press.
Elouard, P., (1968). Le Nouakchottien, étage du Quaternaire de Mauritanie. Annales de la Faculté des Sciences de l'Université de Dakar 22, 121138.
Elouard, P., (1973). Les formations sédimentaires de Mauritanie atlantique. Notice carte géologique au 1/1,000,000 de Mauritanie. Bureau Recherches Géologiques et Minières in press.
Elouard, P., Faure, H., (1967). Quaternaire de l'Inchiri, du Taffoli et des environs de Nouakchott. Laboratoire Géologique Faculté des Sciences de l'Université de Dakar Rapp 19, 162.
Elouard, P., Hebrard, L., (1968). Extension de Golfe de Ndrhâmcha (Mauritanie) à l'Inchirien supérieur. Bulletin Association Sénégalaise pour l'étude du Quaternaire de l'Ouest Africa 18, 3133.
Faure, H., Elouard, P., (1967). Schéma des variations du niveau de l'océan Atlantique sur la cote de l'Ouest de l'Afrique depuis 40,000 ans. Comptes Rendus Academie des Sciences Paris D 265, 784787.
Hebrard, L., (1972). Un épisode Quaternaire en Mauritanie “Afrique occidentale” à la fin du Nouakchottien: Le Taffolien 4000-2000 ans avant le présent. Bulletin Sénégalaise pour l'étude du Quaternaire de l'Ouest Africa 33/34, 515.
Michel, P., Elouard, P., Faure, H., (1968). Nouvelles recherches sur le Quaternaire récent de la région de Saint-Louis (Sénégal). Bulletin de l'Institut Fondamental d'Afrique Noire Serie A 30, 138.
Newman, W.S., (1968). Coastal stability. Fairbridge, R.W., Encyclopedia of Geomorphology Reinhold, New York 150156.
Newman, N.D., Bloom, A.L., (1970). The reef flat and “Two-Meter Eustatic Terrace” of some Pacific atolls. Geological Society of America Bulletin 81, 18811894.
Schwarz, H.U., Einsele, G., Herm, D., (1974). Sandy stromatolites from coastal embayments of Mauritania. Sedimentology (in press).
Seibold, E., (1972). Cruise 25/1971 of R. V. “Meteor”: Continental margin of West Africa. General report and preliminary results. Meteor Forschungsergebnisse C 10, 1738.
Walcott, R.I., (1972). Past sea levels, eustasy, and deformation of the earth. Quaternary Research 2, 114.
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Quaternary Research
  • ISSN: 0033-5894
  • EISSN: 1096-0287
  • URL: /core/journals/quaternary-research
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