Fig. 4: Nanolite identification in the Havre 2012 pumice raft.

TEM images of nanolites (darker greys) bound in the glass of the Havre 2012 for a white and b pink raft pumice. STEM micrographs of regions of c white and d pink raft pumice. EDS elemental mapping areas for e white and f pink raft pumice corresponding to the white boxes in (c, d). Fe-rich areas are depicted in red and represent magnetite and/or hematite nanolites. Glass areas are represented by blues, yellows to greens corresponding to high concentrations of Si and Al. Scale bars in all panels are equal to 20 nm.