Figure F6. Details of volcanic ash layers and their smear slides in Core 333-C0012C-2H. A. Detail of Section 333-C0012C-2H-1, showing possible correlative to the Azuki volcanic ash. B. Smear slide of Sample 333-C0012C-2H-1, 131 cm, which contains abundant bubble wall type glass shards and obsidian grains (e.g., center of photo) typical for the Azuki volcanic ash bed (Hayashida et al., 1996, and references therein). C. Detail of Section 333-C0012C-2H-3, showing possible correlative to the Pink volcanic ash. D. Smear slide photo of volcanic ash in Sample 333-C0012C-2H-3, 72 cm, showing fibrous bubble wall type glass shards and abundant hornblendes as heavy minerals (e.g., green colored mineral in upper right side), which are distinct characteristics for the Pink volcanic ash (Hayashida et al., 1996, and references therein).
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