 The extent of the communal, with a total area of 1676 hectares, is entirely within the limestone plain of "Aunis" which is located to the north of the "Little Flanders marsh", a part of the "Rochefort marshes".The entire commune of "Aigrefeuille d'Aunis" is located on Jurassic sediments, which cover the entire plain of "Aunis" and extend into "Angoumois" north of the Charente river.Late Jurassic Limestone and marl outcrops appear clearly on the surface of the hilly part of the commune, while in the small depression which corresponds to the upstream part of the valley of Virson, are deposits from the Quaternary period.