Divisions of geologic time (Bookmark)
May 3, 2012
Description
This bookmark presents information that is widely sought by educators and students. Version 3.0 of this bookmark is updated according to chapter C of U.S. Geological Survey Professional Paper 1879–1. The bookmark contains names of geologic time periods and boundary age estimates ratified by the International Commission of Stratigraphy in 2023.
Citation Information
| Publication Year | 2012 |
|---|---|
| Title | Divisions of geologic time (Bookmark) |
| DOI | 10.3133/gip141 |
| Authors | |
| Publication Type | Report |
| Publication Subtype | USGS Numbered Series |
| Series Title | General Information Product |
| Series Number | 141 |
| Index ID | gip141 |
| Record Source | USGS Publications Warehouse |