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Earth, Planets and Space

Table 2 Mode composition of scoria from the November 26–27, 2014, eruption (vol%). Porosity of the scoria and volume fraction of glass in groundmass are also shown (vol%)

From: Petrological characteristics and volatile content of magma of the 1979, 1989, and 2014 eruptions of Nakadake, Aso volcano, Japan

Sample ID

I141129S01

I141129S02

I141129S03

Phenocryst

37

35

39

 Plagioclase

22

28

31

 Olivine

2

2

2

 Clinopyroxene

13

5

6

 Fe–Ti oxide

< 1

0

< 1

Groundmass

63

65

61

Porosity

65

77

50

Glass in groundmass

90

65

3

  1. Number of points: 2098 for I141129S01, 3459 for I141129S02, 4177 for I141129S03
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