Seuil du Poitou
The Seuil du Poitou is a geological denomination for an area in western central France where the Paris ( Northeast ) and Aquitaine ( Southwest ) sedimentary basins meet , and which also is a gap between the ancient mountain ranges Massif Armoricain ( Northwest ) and the Massif Central ( Southeast ) . 
<triplet> Aquitaine <subj> France <obj> country <subj> Massif Central <obj> shares border with <triplet> Massif Armoricain <subj> France <obj> located in the administrative territorial entity <triplet> Massif Central <subj> France <obj> located in the administrative territorial entity