TY - RPRT TI - Voluminous lava-like precursor to a major ash-flow tuff: Low-column pyroclastic eruption of the Pagosa Peak Dacite, San Juan volcanic field, Colorado AU - Olivier Bachmann AU - M.A. Dungan AU - P. W. Lipman PY - 2000 DO - 10.1016/s0377-0273(99)00185-7 UR - https://pubs.usgs.gov/publication/70022695 ID - 70022695 ER -