AS/Geology/ohara/110 Volcanoes Silica (SiO2) and water content controls viscosity of magma data/webcontent/958/file/realname/files Objectives- be able to describe the regions where most volcanoes happen at volcanoes/Simpsondebacle Response to "Comments on ‘Failures in Detecting Volcanic Ash from a Satellite-Based Technique’" directory volcanoes |