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Science 24 October 1980:
Vol. 210. no. 4468, pp. 421 - 423
DOI: 10.1126/science.210.4468.421
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Articles

Geoidal Change and Shore-Level Tilt Along Holocene Estuaries: Sénégal River Area, West Africa

H. FAURE 1, J. C. FONTES 2, L. HEBRARD 3, J. MONTEILLET 4, and P. A. PIRAZZOLI 5

1 Laboratoire de Géologie du Quaternaire, Centre National de la Recherche Scientifique, Case 907, Faculté des Sciences de Luminy, F-13288 Marseille Cédex 2, France
2 Laboratoire d'Hydrologie et de Géochimie Isotopique, Bâtiment 504, Université Paris-Sud, F-91405 Orsay Cédex, France
3 Laboratoire de Géologie du Quaternaire, Centre National de la Recherche Scientifique, Faculté des Sciences, Université de Dakar, Dakar-Fann, Sénégal
4 Laboratoire de Geéologie, Institut Fondamental d'Afrique Noire, B.P. 206, Université de Dakar
5 Laboratoire de Géomorphologie, Ecole Pratique des Hautes Etudes, F-92120 Montrouge, France

An expedition under "Projet Rhéomarge" traced marine deposits along the Sénégal estuary. Leveled and dated samples have made it possible to reconstruct portions of paleogeoids of 6500, 5500, and 1800 years before present. The surfaces of these geoids show that the tilt across continental margins predicted by mathematical models is less than 1 meter from the coast to 120 kilometers inland.

Submitted on May 20, 1980


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Postglacial coastal evolution: Ice-ocean-solid Earth interactions in a period of rapid climate change.
W.R. Peltier (2007)
Geological Society of America Special Papers 426, 5-28
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Science. ISSN 0036-8075 (print), 1095-9203 (online)