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Fig. 6 | Earth, Planets and Space

Fig. 6

From: Temporal variations in discharge rate and component characteristics of tephra-fall deposits during the 2014–2015 eruption of Nakadake first crater, Aso Volcano, Japan

Fig. 6

Polarizing microscope photographs (AG) and secondary electron micrographs (HI) of glass shards included in the 2014–2015 ash-fall deposits. A Glass shards and lithic grains in the December 9–11, 2014 ash. BkG: black glass, BrG: brown glass, C: crystal, L: lithic, PBG: pale brown glass. B Poorly vesiculated blocky glass shard in the December 9–11, 2014 ash. C Vesiculated blocky glass shard in the December 9–11, 2014 ash. D Well-vesiculated blocky glass shard in the December 21–23, 2014 ash. E Scoria-type glass in the April 7, 2015 ash. F Fluidal (Pele’s tear-type) glass particle in the April 18–21, 2015 ash. G Very fluidal (Pele’s hair-type) glass shards in the April 7, 2015 ash. H Vesiculated block-type and scoria-type glasses in February 10–25, 2015 ash. I Pele’s hair-type and well-vesiculated block-type glasses in the April 7, 2015 ash

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