2.4.14 Publishing
For a unit to become valid as a formal unit it must be defined in a publicly available scientific journal, map description, published well description, or a guidebook printed in a large edition. All such publications must be obtainable through ordinary library services. Geological units that are introduced on official geological maps before being published in map descriptions or in some other way, can be approved by NSK provided it can be shown that they are defined in accordance with the requirements of this Code. Formal units erected in this way must, however, be defined in line with the Code in a later publication, or alternatively the documentation forming the basis of the definition must be available from the institution responsible for publishing the map.