Adjective
ice-marginal (not comparable)
Relating to a volcanic eruption that is neither supraglacial nor subglacial, but where the lava flow comes into direct contact with the margin of a glacier or ice sheet.
Kuhle, M. (1990): The Probability of Proof in Geomorphology - an Example of the Application of Information Theory to a New Kind of Glacigenic Morphological Type, the Ice-marginal Ramp (Bortensander). Source: Internet