M. Laurent et al., GEOCHRONOLOGY OF QUATERNARY FLUVIAL TERRA CES SYSTEM OF SOMME BASIN BY ESR DATING ON QUARTZ, U-SERIES DISEQUILIBRIA METHOD AND MAGNETOSTRATIGRAPHY, Comptes rendus de l'Academie des sciences. Serie II. Mecanique, physique, chimie, astronomie, 318(4), 1994, pp. 521-526
Geochronological study made on Quaternary fluvial terraces of Somme Ba
sin confirmed the previously established chronostratigraphy of the low
er and middle terraces and placed the higher terraces in the Quaternar
y stratigraphy.