Fig. 2: Characteristics of a flat-top seamount.
From: Subglacial explosive volcanism in the Ross Sea of Antarctica
A High-resolution bathymetry of an archetypical flat-top seamount mapped during our expedition. Two flat-tops (Pfannkuchen and Baby Pfannkuchen) form a double-stack (“doublet”), which indicate the on-lap of deposits from multiple pulses of monogenetic volcanism in the Flapjack Field. B TowCam image showing exposure of tephra. C Lava fragments recovered in dredge DR35 (A) with phenocrysts of olivine, amphibole and a peridotite xenolith. Amph amphibole, ol olivine, xeno mantle xenolith. D, E cross-sectional profiles reflect post-eruption erosion by glaciers. Layers are based on bathymetry (A) and reflect differential erosion of exposed volcanic lithofacies by glacial advances.
