The Priory of Saint-Martin-des-Champs was an influential monastery established in what is now the city of Paris, France. Its surviving buildings are considered treasures of Medieval architecture in the city.
The geology of the Collectivity of Saint Martin consists of andesite tuff and tuff breccia from the middle and late Eocene, intruded by hypabyssal basalt, quartz diorite and younger andesite....