| Title | Obsidian hydration dating and correlation of Bull Lake and Pinedale glaciations near West Yellowstone, Montana |
| Publication Type | Journal Article |
| Year of Publication | 1976 |
| Authors | Pierce KL, Obradovich JD, Friedman I |
| Journal | Geological Society of America Bulletin |
| Volume | 87 |
| Pagination | 703-710 |