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Table T1. Textural features of samples, Hole 1256D. (See table notes.)

Core, section,
interval (cm)		 Depth
CSF (m)		 Mode of
emplacement		 Phenocryst
texture		 Size Crystallinity Texture
type		 Phenocrysts
(%)
cpx pl Total
206-1256D-
9R-2, 7–10 324 Ponded lava flow Aphyric Fine grained Hypocrystalline Intersertal 0.0 0.0 0.0
10R-2, 28–30 329 Ponded lava flow Aphyric Fine grained Hypocrystalline Intersertal 0.0 0.0 0.0
13R-1, 109–111 351 Massive or sheet flow Aphyric Microcrystalline Hypocrystalline Intersertal 0.0 0.5 0.5
14R-2, 127–130 362 Massive or sheet flow Sparsely phyric Cryptocrystalline Hypocrystalline Variolitic 0.0 1.1 1.1
15R-1, 69–71 365 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Intersertal 0.0 0.0 0.0
24R-2, 119–122 422 Massive or sheet flow Sparsely phyric Cryptocrystalline Hypocrystalline Intersertal-pilotaxitic 0.5 1.3 1.8
26R-1, 22–24 439 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Intersertal 0.0 0.0 0.0
26R-4, 17–19 442 Massive or sheet flow Aphyric Microcrystalline Hypocrystalline Intersertal 0.0 0.0 0.0
28R-1, 33–35 451 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Variolitic-intersertal 0.0 0.0 0.0
31R-1, 125–127 467 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Variolitic 0.0 0.0 0.0
32R-6, 6–8 477 Massive or sheet flow Aphyric Microcrystalline Hypocrystalline Intersertal 0.0 0.0 0.0
33R-1, 32–35 481 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Variolitic-intersertal 0.0 0.0 0.0
34R-2, 34–37 486 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Variolitic-intersertal 0.0 0.0 0.0
36R-2, 37–39 496 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Intersertal 0.0 0.0 0.0
38R-1, 10–14 504 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Intersertal 0.0 0.0 0.0
39R-2, 9–12 515 Massive or sheet flow Aphyric Microcrystalline Hypocrystalline Intersertal 0.0 0.0 0.0
42R-2, 31–33 531 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Variolitic 0.0 0.0 0.0
45R-1, 92–95 553 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Variolitic-seriate 0.0 0.3 0.3
49R-2, 38–40 583 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Variolitic-seriate 0.0 0.7 0.7
52R-1, 5–7 601 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Variolitic 0.0 0.0 0.0
53R-3, 22–24 613 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Variolitic 0.0 0.0 0.0
57R-2, 24–26 647 Massive or sheet flow Aphyric Fine grained Hypocrystalline Intersertal 0.0 0.0 0.0
59R-2, 114–115 661 Massive or sheet flow Sparsely phyric Cryptocrystalline Hypocrystalline Variolitic-glomeroporphyritic 0.8 1.0 1.8
61R-1, 91–96 679 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Intersertal 0.0 0.0 0.0
67R-3, 60–65 718 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Variolitic 0.5 0.0 0.5
74R-1, 110–112 748 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Variolitic-intersertal 0.1 0.0 0.1
309-1256D-
76R-2, 0–4 755 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Variolitic 0.2 0.5 0.7
77R-2, 52–55 761 Massive or sheet flow Moderately phyric Cryptocrystalline Hypocrystalline Variolitic 0.5 2.9 3.5
79R-2,48–50 772 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Intersertal 0.0 0.0 0.0
80R-1, 55–58 780 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Variolitic 0.0 0.0 0.0
80R-1, 102–103 780 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Variolitic 0.0 0.0 0.0
84R-1, 54–56 802 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Variolitic 0.0 0.0 0.0
85R-1, 116–119 813 Massive or sheet flow Aphyric Microcrystalline Hypocrystalline Intersertal 0.0 0.0 0.0
85R-3, 76–78 815 Massive or sheet flow Aphyric Microcrystalline Hypocrystalline Intersertal-subophitic 0.0 0.0 0.0
85R-4, 42–45 816 Massive or sheet flow Moderately phyric Cryptocrystalline, fine grained Hypocrystalline Variolitic-glomeroporphyritic 0.1 2.1 2.3
87R-2, 63–66 833 Massive or sheet flow Moderately phyric Fine grained Hypocrystalline Intersertal-subophitic 9.1 0.0 9.1
99R-2, 78–82 909 Massive or sheet flow Aphyric Cryptocrystalline Hypocrystalline Variolitic 0.0 0.1 0.1
102R-1, 70–72 927 Massive or sheet flow Aphyric Microcrystalline, fine grained Hypocrystalline Variolitic-intersertal 0.0 0.3 0.3
110R-2, 56–60 972 Massive or sheet flow Aphyric Microcrystalline Hypocrystalline Intersertal 0.0 0.0 0.0
111R-1, 85–87 975 Massive or sheet flow Aphyric Fine grained Hypocrystalline Intersertal 0.2 0.3 0.5
118R-1, 45–48 1008 Massive or sheet flow Sparsely phyric Fine grained Hypocrystalline Intersertal 0.0 1.6 1.6
132R-1, 112–114 1076 Sheeted dike Aphyric Cryptocrystalline Hypocrystalline Variolitic 0.0 0.0 0.0
138R-1, 10–12 1104 Sheeted dike Aphyric Cryptocrystalline Hypocrystalline Intersertal 0.0 0.0 0.0
139R-1, 48–50 1109 Sheeted dike Aphyric Microcrystalline Hypocrystalline Variolitic-intersertal 0.6 0.0 0.6
142R-1, 119–121 1124 Sheeted dike Aphyric Fine grained Hypocrystalline Intergranular-subophitic 0.0 0.0 0.0
145R-2, 51–55 1139 Sheeted dike Aphyric Microcrystalline Holocrystalline Intergranular 0.0 0.0 0.0
147R-1, 71–75 1146 Sheeted dike Aphyric Fine grained Holocrystalline Intergranular 0.0 0.0 0.0
150R-1, 8–10 1160 Sheeted dike Aphyric Fine grained Holocrystalline Variolitic-intergranular 0.0 0.0 0.0
154R-1, 56–60 1180 Sheeted dike Aphyric Microcrystalline Holocrystalline Intergranular 0.0 0.0 0.0
163R-3, 59–62 1221 Sheeted dike Sparsely phyric Cryptocrystalline Holocrystalline Variolitic 0.0 1.0 1.0
164R-2, 115–118 1225 Sheeted dike Aphyric Microcrystalline, fine grained Holocrystalline Variolitic-intersertal 0.0 0.0 0.0
165R-3, 102–105 1231 Sheeted dike Aphyric Microcrystalline Holocrystalline Variolitic-intersertal 0.0 0.0 0.0
167R-3, 51–53 1239 Sheeted dike Aphyric Cryptocrystalline Holocrystalline Variolitic 0.3 0.6 0.9
168R-5, 35–37 1248 Sheeted dike Aphyric Microcrystalline Holocrystalline Variolitic-intersertal 0.0 0.0 0.0
170R-2, 90–93 1254 Sheeted dike Sparsely phyric Cryptocrystalline Holocrystalline Variolitic 0.9 0.6 1.5
170R-3, 41–43 1255 Sheeted dike Aphyric Microcrystalline Hypocrystalline Intersertal-subophitic 0.0 0.0 0.0

Notes: CSF = core depth below seafloor. Aphyric = 0%–1%, sparsely phyric = 1%–5%, moderately phyric = 5%–10%. Cryptocrystalline = <0.1 mm, microcrystalline = 0.1–0.2 mm, fine grained = 0.2–1.0 mm.

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