Skip to main content
U.S. flag

An official website of the United States government

Permian chronostratigraphic subdivisions

March 1, 1997

Names and boundary levels for series and stages of the Permian System, based on marine successions, have been approved by the Permian Subcommission, ICS. These are the Cisuralian, Guadalupian, and Lopingian Series and their constituent stages standardized respectively in the Urals, Southwest USA, and South China for the Lower; Middle, and Upper Permian.

Citation Information

Publication Year 1997
Title Permian chronostratigraphic subdivisions
Authors Jin Yugan, Bruce R. Wardlaw, Brian F. Glenister, Galina V. Kotlyar
Publication Type Article
Publication Subtype Journal Article
Series Title Episodes
Index ID 70073403
Record Source USGS Publications Warehouse