Table T3. Results of point counts on volcanic rock thin sections, Hole 1188A.

Table T3. Results of point counts on volcanic rock thin sections, Hole 1188A.

Core, section,
interval (cm) Unit Rock type Number of points Groundmass
(%) Vesicles
(%) Phenocrysts (%)

Plagioclase

Clinopyroxene

Opaques

193-1188A-

2R-1 (Piece 3, 9-12) 1 Rhyodacite 750 92.5 3.6 2.6 0.8 0.4

3R-1 (Piece 1, 0-2) 1 Rhyodacite 750 92.2 4.6 2.4 0.1 0.5

16R-1 (Piece 6, 31-38) 17 Volcanic rock 750 94.8 4.5 0.4 0.0 0.2

16R-1 (Piece 10, 74-78) 17 Volcanic rock 750 95.4 3.2 0.9 0.0 0.4

16R-2 (Piece 2, 12-15) 18 Volcanic rock 565 96.4 1.9 1.0 0.0 0.5

16R-2 (Piece 7, 40-43) 18 Volcanic rock 500 98.4 0.0 1.2 0.0 0.4

19R-1 (Piece 15, 73-76) 22 Volcanic rock 500 86.5 13.3 0.1 0.0 0.0

Core, section, interval (cm)	Unit	Rock type	Number of points	Groundmass (%)	Vesicles (%)	Phenocrysts (%)
Plagioclase	Clinopyroxene	Opaques
193-1188A-
2R-1 (Piece 3, 9-12)	1	Rhyodacite	750	92.5	3.6	2.6	0.8	0.4
3R-1 (Piece 1, 0-2)	1	Rhyodacite	750	92.2	4.6	2.4	0.1	0.5
16R-1 (Piece 6, 31-38)	17	Volcanic rock	750	94.8	4.5	0.4	0.0	0.2
16R-1 (Piece 10, 74-78)	17	Volcanic rock	750	95.4	3.2	0.9	0.0	0.4
16R-2 (Piece 2, 12-15)	18	Volcanic rock	565	96.4	1.9	1.0	0.0	0.5
16R-2 (Piece 7, 40-43)	18	Volcanic rock	500	98.4	0.0	1.2	0.0	0.4
19R-1 (Piece 15, 73-76)	22	Volcanic rock	500	86.5	13.3	0.1	0.0	0.0

Note: Point counts were measured using a rectangular grid with a = 0.667 mm and b = 0.8 mm.