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Fig. 9 | Earth, Planets and Space

Fig. 9

From: Quantitative measurement of bubble textures in pumice clasts using a digital stereo microscope with low-angled ring illumination

Fig. 9

Stratigraphic change of bubble textures. a The vertical variation of mean \(\overline{D}\) in unit 5a with error bars indicating the standard deviation. bd Histograms of the average bubble radius \(\overline{R}\) and the average bubble deformation degree \(\overline{D}\) for Taupo ignimbrite, Taupo plinian fall, and Hatepe plinian fall. e The abundance of clast types visually judged by Houghton et al. (2010) (B: coarsely vesicular pumice dominated by spherical bubbles, C: long-tube microvesicular pumice with elongate bubbles, D: long-tube coarsely vesicular pumice with elongate bubbles, E: gray and dense material)

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