Fig. 1: MI bubble formation and representative Sunset Crater MIs.
From: Highly explosive basaltic eruptions driven by CO2 exsolution
a Diagram showing post-entrapment formation mechanisms of MI bubbles. b, c Photomicrographs of example MIs; scale bar is 20 μm. b MI from Group I (<2.5 vol% bubble). c MI from Group II (>2.5 vol% bubble).
