| Title | Upper Cretaceous Rocks of Parts of Southwestern Oregon and Northern California |
| Publication Type | Journal Article |
| Year of Publication | 1956 |
| Authors | Peck, Dallas L., Ralph W. Imlay, and W. P. Popenoe |
| Secondary Title | Bulletin of the American Association of Petroleum Geologists |
| Volume | 40 |
| Issue | 8 |
| Pagination | 1968-1984 |
| Accession Number | S-1046 |
| Keywords | California, Chico formation, Cretaceous, Hornbrook Formation, Oregon |
| Notes | Hornbrook formation, Chico formation |
| Series Title | Bulletin of the American Association of Petroleum Geologists |
