Les nappes alluviales de la Basse Somme revisitées
In: L'Anthropologie. Elsevier: Paris. ISSN 0003-5521; e-ISSN 1873-5827, more
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| Author keywords |
Somme; Fluviatile terraces; Pleistoceen; Marine isotopic stages |
| Abstract |
The new approach of the fluviatile sequence preserved downstream of Abbeville from Port-le-Grand to Saint-Valery, brings together two sets of complementary data in a same canvas. The first set combines the field records of V. Commont and A. Briquet slightly above the basal cravels. The second set encompasses the data gained for the high and very high terraces mapped in the eighties. They point to a succession of ten main terraces and two second order ones, occurring in continuity with the Abbeville terrace system. The upper terrace being related to Jaramillo, we are dealing with one million year strong regional record with a high-resolution palaeoenvironmental signature fitting in with the ODP 677 marine isotopic record and with the Chinese loess record. In this way, the laminar tool-kit of Croix-l’Abbé could be positioned in the middle part of MIS 8, around 250 ka. |
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