Table T2. XRD results, Holes 1275B and 1275D.
Core, section,
interval (cm)
Depth
(mbsf)
Piece
Rock type
Mineralogy
ICP-AES
analyses
Thin
section
Major
Minor
Trace
209-1275B-







3R-1, 82–86 13.8 13 Gabbro Plagioclase Amphibole Chlorite, ilmenite Yes Yes
3R-1, 103–107 14.0 17 Gabbro Plagioclase Amphibole ilmenite Yes Yes
5R-1, 134–137 23.9 22 Gabbro Plagioclase Amphibole Cpx, ilmenite, titanite Yes Yes
6R-1, 61–64 28.2 10 Troctolite Lizardite Olivine, magnetite Cpx, plagioclase, aragonite Yes Yes
6R-2, 27–30 29.3 4A Troctolite Lizardite Olivine Amphibole, chlorite, talc Yes Yes
6R-2, 102–107 30.1 9 Troctolite Lizardite Olivine Chlorite Yes Yes
9R-1, 109–112 42.9 15 Gabbro Plagioclase Cpx Amphibole, ilmenite Yes Yes
10R-1, 74–76 47.5 10 Gabbro Plagioclase Cpx Amphibole, ilmenite Yes Yes
12R-2, 89–92 58.4 1B Gabbro Plagioclase Cpx Amphibole, ilmenite Yes Yes
14R-1, 84–86 66.6 13 Gabbro Plagioclase Cpx, amphibole
Yes Yes
15R-2, 68–71 72.5 11 Gabbro Plagioclase Cpx, ilmenite Amphibole, pentlandite? Yes Yes
17R-1, 65–67 80.8 11 Gabbro Plagioclase Cpx Amphibole Yes Yes
17R-1, 123–125 81.3 19 Gabbro Plagioclase Amphibole, cpx ilmenite Yes Yes
19R-1, 48–50 89.9 5A Gabbro Plagioclase Cpx Amphibole Yes Yes
19R-1, 135–137 90.8 6B Gabbro Plagioclase Cpx, ilmenite Amphibole Yes Yes
20R-2, 105–107 96.6 7 Gabbro Plagioclase Cpx Amphibole, ilmenite Yes Yes
20R-2, 117–119 96.7 8 Gabbro Plagioclase Cpx Amphibole, ilmenite Yes Yes
21R-1, 26–28 99.3 1D Gabbro Plagioclase Cpx, ilmenite Amphibole Yes Yes
21R-1, 90–92 99.9 4C Gabbro Plagioclase Cpx, ilmenite Amphibole Yes Yes
21R-2, 0–4 100.5 1 Gabbro Plagioclase Cpx, amphibole ilmenite Yes Yes
21R-2, 136–138 101.9 7B Gabbro Plagioclase Cpx Amphibole, ilmenite Yes Yes
209-1275D-







1R-1, 113–115 1.1 19B Diabase Plagioclase Amphibole Titanite Yes Yes
2R-1, 137–140 9.4 27 Troctolite Lizardite
Amphibole, chlorite, talc Yes Yes
6R-1, 89–91 28.0 17 Troctolite Calcite Talc, lizardite Amphibole, chlorite, montmorillionite Yes Yes
10R-1, 50–52 46.6 6 Troctolite Lizardite
Magnetite Yes Yes
10R-2, 104–106 48.6 14A Troctolite Lizardite
Magnetite, calcite Yes Yes
12R-2, 42–46 57.6 8 Gabbro Plagioclase
Amphibole Yes Yes
13R-2, 49–51 62.5 1B Gabbro Plagioclase Amphibole Cpx Yes Yes
15R-2, 11–13 71.8 1A Gabbro Plagioclase
Amphibole, cpx Yes Yes
17R-2, 93–95 82.1 15A Troctolite Lizardite

Yes Yes
18R-1, 133–135 85.7 17B Gabbro Plagioclase Cpx Amphibole Yes Yes
21R-1, 63–65 99.6 8A Gabbro Plagioclase Cpx Amphibole Yes Yes
22R-1, 145–147 105.2 20B Gabbro Plagioclase Cpx Amphibole Yes Yes
31R-2, 69–71 143.9 4F Trondhjemite Plagioclase Quartz Amphibole Yes Yes

Notes: Cpx = clinopyroxene. Due to peak overlap, samples with identified lizardite may also contain chrysotile. Qualifiers "major, minor, and trace" indicate relative abundances based on peak heights and do not necessarily reflect true relative proportions. ICP-AES = inductively coupled plasma–atomic emission spectrometry. ICP-AES data are available in Table T4. This table is also available in ASCII.