Carte générale de la nappe du Lutétien-Yprésien, de 1970 à 1972.
Aquifère de l'Eocène moyen et inférieur.
source : Hydrogéologie du centre du bassin de Paris : contribution à l'étude de quelques aquifères principaux. Thèse Université Paris VI. Mémoires du BRGM n° 98 (C. Mégnien, 1979)
Pour obtenir plus de détail consulter l'article : http://sigessn.brgm.fr/spip.php?rubrique19
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