Table T1. Plagioclase compositions and structural formulas.
Core, section,
interval (cm)
Point
Phase
Major element oxide (wt%)
Intergrowth
Trace element (ppm)
An
Ab
Or
SiO2
TiO2
Al2O3
Cr2O3
FeO
MgO
CaO
K2O
Na2O
Total
Si
Ti
Al
Fe3+
Ca
Na
K
Cr
Total
200-1224A-
4X-1, 16–19 2-3 Plagioclase phenocryst rim 52.15 0.04 29.32 0.05 0.73 0.22 12.86 0.06 4.10 99.53 2-1, 2-2 9.5532 0.0061 6.3326 0.0747 2.5240 1.4574 0.0137 0.0073 19.9690 63.2 36.5 0.3

2-4 Plagioclase same phenocryst core 51.34 0.08 29.61 0.04 0.51 0.19 13.28 0.06 3.88 99.00 2-1, 2-2 9.4591 0.0115 6.4325 0.0525 2.6224 1.3873 0.0141 0.0053 19.9849 65.2 34.5 0.3

2-6 Plagioclase groundmass 52.34 0.04 29.28 0.01 0.83 0.19 12.64 0.07 4.14 99.54 2-1, 2-2 9.5805 0.0059 6.3173 0.0851 2.4783 1.4690 0.0166 0.0016 19.9544 62.5 37.1 0.4

1-1 Plagioclase microphenocryst 50.90 0.00 29.96 0.02 0.71 0.15 13.73 0.04 3.73 99.23
9.3747 0.0000 6.5047 0.0727 2.7097 1.3335 0.0083 0.0027 20.0062 66.9 32.9 0.2
200-1224D-
























3R-1, 50–53 1-1 Plagioclase groundmass 53.67 0.05 27.81 0.00 0.96 0.12 11.38 0.08 5.17 99.22 2-3, 4-1 9.8338 0.0063 6.0075 0.0976 2.2350 1.8357 0.0184 0.0000 20.0344 54.7 44.9 0.4

3-1 Plagioclase microphenocryst core 51.97 0.13 30.63 0.11 0.49 0.16 13.76 0.05 3.91 101.21 2-5 9.3745 0.0181 6.5133 0.0490 2.6597 1.3667 0.0114 0.0152 20.0077 65.9 33.8 0.3

3-2 Plagioclase same microphenocryst rim 56.91 0.09 27.12 0.00 0.83 0.06 9.47 0.09 6.28 100.85 2-5 10.1790 0.0126 5.7186 0.0830 1.8152 2.1777 0.0209 0.0000 20.0070 45.2 54.3 0.5

4-3 Plagioclase groundmass 54.39 0.16 28.25 0.00 0.93 0.12 11.43 0.08 5.15 100.51 4-3, 4-4 9.8310 0.0213 6.0196 0.0935 2.2136 1.8058 0.0184 0.0000 20.0033 54.8 44.7 0.5
4R-1, 74–77 1-2 Plagioclase microphenocryst rim 50.22 0.03 30.78 0.00 0.63 0.22 14.20 0.04 3.43 99.55 2-6 9.2356 0.0041 6.6728 0.0648 2.7979 1.2221 0.0086 0.0007 20.0066 69.5 30.3 0.2

1-3 Plagioclase microphenocryst core 50.19 0.13 30.14 0.01 0.62 0.18 13.79 0.03 3.36 98.46 2-6 9.3123 0.0183 6.5938 0.0637 2.7418 1.2104 0.0077 0.0011 19.9492 69.2 30.6 0.2
200-1224E-
3R-1, 6–10 2-1 Plagioclase microphenocryst rim 51.58 0.08 30.02 0.07 0.82 0.15 13.40 0.04 3.85 100.02 3-2, 3-3, 5-1 9.4178 0.0113 6.4623 0.0837 2.6213 1.3632 0.0083 0.0105 19.9784 65.7 34.1 0.2

2-2 Plagioclase same microphenocryst core 52.11 0.10 29.75 0.01 0.63 0.19 13.42 0.04 4.05 100.30 3-2, 3-3, 5-1 9.4826 0.0138 6.3819 0.0641 2.6171 1.4275 0.0103 0.0015 19.9988 64.5 35.2 0.3
200-1224F-
1R-4, 115–117 1-6 Plagioclase groundmass 57.34 0.11 26.14
0.50 0.06 8.76 0.09 6.63 99.63
10.3458 0.0149 5.5596 0.0501 1.6931 2.3208 0.0213 0.0000 20.0055 42.0 57.5 0.5

1-8 Plagioclase groundmass 52.41 0.04 28.89 0.00 0.70 0.17 12.25 0.05 4.61 99.13
9.6286 0.0061 6.2566 0.0719 2.4114 1.6412 0.0109 0.0004 20.0270 59.3 40.4 0.3
3R-1, 14–16 1-3 Plagioclase phenocryst rim 58.52 0.10 25.27 0.02 0.48 0.03 7.62 0.12 7.13 99.30 2-10, 2-11, 5-4 10.5528 0.0132 5.3719 0.0486 1.4720 2.4941 0.0277 0.0029 19.9832 36.9 62.4 0.7

1-4 Plagioclase same phenocryst core 51.51 0.00 29.83 0.00 0.68 0.18 13.00 0.06 4.02 99.29 2-10, 2-11, 5-4 9.4622 0.0000 6.4593 0.0695 2.5588 1.4330 0.0144 0.0000 19.9971 63.9 35.8 0.4

2-3 Plagioclase groundmass 59.16 0.00 25.23 0.01 0.36 0.02 7.33 0.11 7.24 99.47 4-12, 5-5, 5-6 10.6229 0.0005 5.3419 0.0364 1.4106 2.5205 0.0245 0.0018 19.9591 35.7 63.7 0.6
3R-3, 90–92 1-1 Big phenocryst plagioclase rim 52.08 0.02 28.98 0.03 0.87 0.19 12.49 0.04 4.48 99.18 2-12, 4-15 9.5802 0.0024 6.2854 0.0894 2.4623 1.5989 0.0102 0.0039 20.0326 60.5 39.3 0.3

1-2 Big phenocryst plagioclase mantle 49.76 0.06 30.47 0.02 0.59 0.20 13.96 0.04 3.46 98.57 2-12, 4-15 9.2383 0.0091 6.6697 0.0612 2.7767 1.2466 0.0101 0.0025 20.0142 68.8 30.9 0.3

1-3 Big phenocryst plagioclase core 49.75 0.10 30.52
0.58 0.21 14.29 0.01 3.31 98.77 2-12, 4-15 9.2211 0.0143 6.6694 0.0601 2.8387 1.1909 0.0012 0.0000 19.9958 70.4 29.5 0.0
4R-6, 11–13 1-4 Plagioclase microphenocryst in pillow 51.21 0.08 29.99 0.01 0.65 0.22 13.39 0.01 3.81 99.37 3-5, 3-6, 2-13 9.4087 0.0114 6.4953 0.0661 2.6352 1.3589 0.0034 0.0008 19.9800 65.9 34.0 0.1

2-1 Plagioclase phenocryst rim in pillow 49.72 0.04 30.94
0.78 0.22 14.42 0.02 3.30 99.44 3-8 9.1687 0.0050 6.7272 0.0798 2.8498 1.1793 0.0056 0.0000 20.0153 70.6 29.2 0.1

2-2 Plagioclase phenocryst mantle in pillow 50.08 0.07 30.57 0.01 0.55 0.25 14.39 0.04 3.48 99.44 3-8 9.2310 0.0103 6.6422 0.0563 2.8421 1.2437 0.0085 0.0010 20.0351 69.4 30.4 0.2

2-3 Plagioclase phenocryst core in pillow 50.35
30.61 0.01 0.79 0.23 14.14 0.03 3.43 99.60 3-8 9.2593 0.0000 6.6368 0.0812 2.7865 1.2245 0.0075 0.0013 19.9970 69.3 30.5 0.2

3-3 Plagioclase 50.80 0.06 29.57 0.04 0.84 0.23 13.54 0.05 3.76 98.89 2-14, 2-15 9.4007 0.0086 6.4517 0.0866 2.6859 1.3494 0.0112 0.0052 19.9993 66.4 33.3 0.3
6R-1, 29–34 1-1 Plagioclase in pillow 51.68 0.07 29.87 0.03 0.77 0.25 13.35 0.03 4.00 100.05 2-16, 3-9 9.4404 0.0099 6.4337 0.0781 2.6129 1.4164 0.0069 0.0047 20.0031 64.7 35.1 0.2

4-2 Plagioclase acicular in pillow 52.05
29.44 0.01 0.76 0.26 13.04 0.04 4.03 99.63 2-18, 2-19, 3-13 9.5325 0.0000 6.3573 0.0778 2.5588 1.4324 0.0105 0.0014 19.9707 63.9 35.8 0.3
6R-1, 105–107 1-3 Plagioclase phenocryst core 50.19 0.10 30.15
0.58 0.22 13.67 0.02 3.58 98.53 2-20, 4-17, 4-18 9.3116 0.0144 6.5951 0.0601 2.7179 1.2892 0.0054 0.0000 19.9937 67.7 32.1 0.1

1-4 Plagioclase phenocryst rim 50.01 0.05 30.04 0.02 0.51 0.20 13.71 0.05 3.39 97.98 2-20, 4-17, 4-18 9.3222 0.0071 6.6021 0.0528 2.7374 1.2243 0.0112 0.0025 19.9597 68.9 30.8 0.3
11R-2, 13–15 1-1 Plagioclase groundmass 50.59 0.03 30.73 0.12 0.54 0.22 14.13 0.03 3.38 99.76 3-15, 2-22 9.2717 0.0042 6.6412 0.0549 2.7741 1.2009 0.0081 0.0169 19.9721 69.6 30.2 0.2

2-4 Plagioclase groundmass 51.88 0.02 29.52 0.00 0.84 0.20 12.97 0.04 4.20 99.67 3-16, 3-17, 2-23 9.5028 0.0031 6.3750 0.0854 2.5464 1.4930 0.0097 0.0000 20.0153 62.9 36.9 0.2

5-1 Plagioclase microphenocryst 50.83 0.05 30.62 0.01 0.61 0.22 13.78 0.05 3.53 99.70
9.3143 0.0072 6.6150 0.0624 2.7059 1.2555 0.0110 0.0011 19.9725 68.1 31.6 0.3
13R-1, 22–24 1-1 Plagioclase microphenocryst core 53.12 0.03 28.58 0.13 0.69 0.18 11.76 0.07 4.48 99.05 2-25 9.7381 0.0038 6.1774 0.0706 2.3108 1.5923 0.0163 0.0195 19.9287 59.0 40.6 0.4

1-5 Plagioclase groundmass 53.18 0.10 28.16 0.08 0.94 0.18 11.53 0.05 4.53 98.76 2-26, 4-20 9.7820 0.0142 6.1059 0.0969 2.2716 1.6161 0.0122 0.0118 19.9107 58.2 41.4 0.3
15R-1, 88–90 1-1 Plagioclase microphenocryst 54.88
27.43 0.03 0.90 0.12 10.70 0.08 5.44 99.59 4-21 9.9861 0.0000 5.8846 0.0917 2.0865 1.9209 0.0178 0.0050 19.9926 51.8 47.7 0.4

2-1 Big phenocryst plagioclase rim 52.19 0.08 28.89
0.89 0.16 12.54 0.05 4.38 99.18
9.5956 0.0108 6.2622 0.0910 2.4709 1.5613 0.0117 0.0000 20.0035 61.1 38.6 0.3

2-2 Big phenocryst plagioclase mantle 52.41 0.07 29.49 0.02 0.68 0.18 12.53 0.05 4.32 99.76
9.5670 0.0097 6.3449 0.0694 2.4501 1.5274 0.0123 0.0035 19.9843 61.4 38.3 0.3

2-3 Big phenocryst plagioclase core 52.52 0.01 29.28
0.72 0.16 12.33 0.05 4.53 99.61
9.5996 0.0020 6.3086 0.0735 2.4148 1.6069 0.0107 0.0000 20.0161 59.9 39.9 0.3

3-3 Skeletal plagioclase groundmass 58.02 0.12 25.72 0.02 0.71 0.08 8.39 0.12 6.74 99.92 2-29, 2-30 10.4350 0.0167 5.4534 0.0711 1.6174 2.3513 0.0274 0.0022 19.9744 40.5 58.8 0.7

Notes: In the Point column, the first number indicates the number of the circle drawn on the thin section, and the second number indicates the sequential number of analyses in that circle. Data in the Intergrowth column are the phases intergrown or associated with plagioclase. The first number indicates the table (e.g., 2 = clinopyroxene, 3 = glass, 4 = ophiolite, 5 = others), and the second number indicates the number of phases in that column. An = anorthite, Ab = albite, Or = orthoclase.