 | | Report (issue) | | 370 m) were collected for this investigation. Volcanic glass and open spaces of fractures, vesicles,...drill holes located both outside and within the caldera show the effects of hydrothermal alteration. The...(DonnellyNolan and others, 1990). The most recent volcanic activity (about 900 years ago), at Glass Mountain...Mountain, occurs in the vicinity of the 7 x 12 km caldera (Figure 2) (Donnelly-Nolan and others, 1990). Figure...548°C km" 1 are given for 3 wells sited within the caldera of Medicine Lake volcano (Donnelly-Nolan and others |  | | Book | | Herbert Kroll (Münster), Rob Lavisnky (Dallas, USA), Heike Lehner (Heidelberg), Joachim Lorenz (Karlstein.... . . . . . . . . . . . . . . . . . . . Mixed Volcanic Activity: Stratovolcanoes . . . . . . . . . ..... . . . . . . . . . . . . . . . . . . . . . . Volcanic Exhalations . . . . . . . . . . . . . . . . ..... . . . . . . . . . . . . . . . . . . . . . . Volcanic Roots and Magma Chambers. . . . . . . . . . ..... . . . . . . . . . . . . . . . . . . . . . . Volcanic Gases. . . . . . . . . . . . . . . . . . . . |
|
