Electronic Supplementary Material

Experiment / Analyses / Zr [ppm] / 2σ/Ö(n-1) [ppm] / Temperature (°C) / Pressure (GPa)
ZrTi-106 / 1 / 5142 / 117 / 1000 / 1
2 / 4564 / 112
3 / 5124 / 117
4 / 5076 / 112
5 / 4463 / 96
6 / 5311 / 124
7 / 6013 / 128
ZrTi-108 / 1 / 2787 / 110 / 950 / 1
2 / 2887 / 109
3 / 2311 / 100
4 / 2786 / 108
5 / 2338 / 100
ZrTi-109 / 1 / 884 / 89 / 900 / 1
2 / 797 / 87
3 / 1079 / 98
4 / 742 / 90
ZrTi-111 / 1 / 729 / 61 / 850 / 1
2 / 663 / 62
3 / 572 / 60
4 / 697 / 60
5 / 798 / 63
ZrTi-120 / 1 / 522 / 187 / 800 / 1
2 / 464 / 174
3 / 398 / 160
4 / 385 / 181
5 / 372 / 165
6 / 478 / 191
7 / 357 / 232
8 / 483 / 138
ZrTi-121 / 1 / 1198 / 202 / 1000 / 1.8
2 / 1369 / 223
3 / 1480 / 212
4 / 1355 / 214
5 / 1438 / 223
6 / 1454 / 206
7 / 1279 / 205
8 / 1183 / 209
ZrTi-122 / 1 / 469 / 222 / 900 / 1.8
2 / 453 / 246
3 / 519 / 243
4 / 493 / 224
ZrTi-124 / 1 / 4480 / 53 / 1000 / 1
2 / 4873 / 48
3 / 4543 / 52
4 / 4315 / 49
5 / 4408 / 50
6 / 4456 / 52
7 / 4123 / 52
8 / 4320 / 51
9 / 4503 / 52
10 / 4788 / 50
ZrTi-130 / 1 / 6060 / 45 / 1000 / 1
2 / 5562 / 45
3 / 5833 / 47
4 / 4915 / 42
5 / 5487 / 44
6 / 5535 / 46
7 / 4730 / 56
8 / 5947 / 55
9 / 6193 / 57
10 / 4414 / 42
11 / 4898 / 48
12 / 5326 / 45
13 / 6080 / 46
ZrTi-134 / 1 / 589 / 94 / 1000 / 2.4
2 / 412 / 82
3 / 881 / 95
4 / 649 / 101
5 / 541 / 101
6 / 744 / 97
7 / 541 / 96
8 / 347 / 90
9 / 490 / 90
ZrTi-137 / 1 / 4428 / 63 / 1000 / 1
2 / 4434 / 62
3 / 4636 / 62
4 / 4630 / 64
5 / 4815 / 63
6 / 5063 / 59
7 / 5302 / 59
8 / 5211 / 58
9 / 5202 / 58
10 / 5027 / 58
11 / 5311 / 57
12 / 5252 / 57
13 / 5094 / 58
14 / 5165 / 57
15 / 5437 / 59
16 / 4763 / 61
17 / 5493 / 58
18 / 4819 / 61

eTable 1. Complete EMP analyses of Zr in run products.

Sample / Sphene Standard / Sphene Standard
Mass calibration Pt #1 / Mass calibration Pt. #2
No. of analyses / 4 / 4
Ca / 19.97 / 20.06
Ti / 20.45 / 20.74
Si / 14.22 / 14.25
O / 37.98 / 38.22
Zr / 0.45 / 0.32
Total / 93.06 / 93.59
Zr [ppm] / 4455 / 3154
2 std. error / 114 / 101
Det. Limit [ppm] / 75 / 74

eTable 2. EMP analyses of ion probe calibration spots for sphene. 100 nA, 60s, 10 micron beam.