Structure and physical characteristics of pumice from the climactic eruption of Mount Mazama (Crater Lake), Oregon

C Klug, KV Cashman, C Bacon - Bulletin of Volcanology, 2002 - Springer
The vesicularity, permeability, and structure of pumice clasts provide insight into conditions
of vesiculation and fragmentation during Plinian fall and pyroclastic flow-producing phases …

Plinian eruptions and passive collapse events as mechanisms of formation for Martian pit chain craters

ED Scott, L Wilson - Journal of Geophysical Research: Planets, 2002 - Wiley Online Library
Three distinct and intersecting sets of graben exist near the Martian volcano Alba Patera.
One set formed as a response to the evolution of the Alba Patera edifice. A second set …