Units of the Main Maps

— The Units are the building stones of the Main Maps, they make a complete coverage of the presented area.
— They are characterised by their latest metamorphic overprint.
— Every Unit has a name.
— They have a closed shape on the Main Maps.
— The Boundaries are defined and separating Units of distinct metamorphic histories.
— Every Unit has a Description.
— A Description is considered as a publication.