Mini Review Published on 30 Aug 2017 Updates to Concepts on Phreatomagmatic Maar-Diatremes and Their Pyroclastic Deposits in Volcanology Greg A. ValentineJames D. L. WhitePierre-Simon RossAlison H. GraettingerIngo Sonder Frontiers in Earth Science doi 10.3389/feart.2017.00068 9,644 views 63 citations