Title: Stratigraphic nomenclature databases for the United States, its possessions and territories
Description: A computerized lexicon of geologic- and stratigraphic unit names used in the United States, its possessions and territories. It may be sorted by geographic name, stratigraphic rank, age, geologic province or region, state, author, or specified keywords.
Subjects: Stratigraphic Geology, Nomenclature, Databases, Geology
Places: United States