Tags: geophysics, Hindon Maar, maar
Tags: diatreme, fissure, Hopi Buttes, maar, monogenetic, root zone, shallow plumbing, volcanism
Tags: Anguilla, diatreme, Field, fossil, Foulden, insects, lake, maar, Miocene, New Zealand, pyroclastic, Sediment, volcanic, Waipiata
Tags: basanite, erosion, Hungary, maar, New Zealand, phreatomagmatic, scoria, tephrite, vent
atom, dcmes-xml, json, omeka-xml, rss2