| Title | Ash-flow sheets of early Miocene and Early Pliocene age are present in the Castillo de Callalli, Arequipa department, Southern Peru |
| Publication Type | Journal Article |
| Year of Publication | 2003 |
| Authors | Noble, D. C., Navarro P. A., Quispesivana L., Peters L., & McKee E. H. |
| Journal | Boletín de la Sociedad Geológica del Perú |
| Volume | 95 |
| Pagination | 33-38 |