Eruptive history of Middle Sister, Oregon Cascades-Product of a late Pleistocene eruptive episode
August 10, 2018
New mapping, geochemistry, and argon geochronology illuminate a brief, remarkably silicic episode set in a mafic segment of the Cascade arc. Middle Sister was constructed during a 35-k.y. episode in the late Pleistocene from mafic, intermediate, and silicic eruptions adjacent to the primarily rhyolitic South Sister. Eruptions in the Three Sisters volcanic cluster prior to 50 ka were exclusively mafic (
Citation Information
| Publication Year | 2018 |
|---|---|
| Title | Eruptive history of Middle Sister, Oregon Cascades-Product of a late Pleistocene eruptive episode |
| DOI | 10.1130/GES01638.1 |
| Authors | Andrew T. Calvert, Judith E. Fierstein, Wes Hildreth |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | Geosphere |
| Index ID | 70262507 |
| Record Source | USGS Publications Warehouse |
| USGS Organization | Volcano Science Center |