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 |