Figure 3
From: First 3D imaging characterization of Pele’s hair from Kilauea volcano (Hawaii)
3D rendering of selected samples from HMM, LOE and KI (isotropic voxel size of 1.3 × 1.3 × 1.3 µm3); (a, d) 3D rendering of the imaged Pele’s hairs in grayscale for HMM (sample HMM5) and LOE (sample LOE2) respectively; (b, e) the corresponding labeled vesicles, displayed with an RGB colormap. It can be noticed that vesicles have very elongated structure and can cover the total length of the hairs; (c, f) enlargement of the labeled vesicles, selected from a region of interest (marked with a box) on the grayscale 3D images, for HMM and LOE samples respectively. The small insert in (f) shows an overlay between vesicles and hair in a subregion of the LOE sample. It shows that the bending of the vesicles is associated to the presence of small microlites; (g) 3D rendering of a KI3 sample and its segmented vesicle (h) showing a high vesicularity and two main population of vesicles: (i) round and small or (ii) large and elongated; (i) cut of the volume along the sagittal direction (not in scale). Length of full imaged hair are also reported in yellow text.
