| Title | Basaltic Rocks in the Umpqua Formation |
| Publication Type | Journal Article |
| Year of Publication | 1935 |
| Authors | Wells, Francis G., and Aaron C. Waters |
| Secondary Title | Bulletin of the Geological Society of America |
| Volume | 40 |
| Pagination | 961-972 |
| Accession Number | S-117 |
| Keywords | basalt, Breccia, Calapooya formation, Eocene, Igneous rocks, Miocene, Umpqua formation, Volcanics |
| Notes | West-central Oregon; Roseburg quadrangle, Calapooya formation; Eocene, Miocene |
| Series Title | Bulletin of the Geological Society of America |
