serie NOVA TERRA nº 48

Table Ig9-Hf

Lu, Yb and Hf LA-MC-ICPMS data of zircon crystals from sample GCH-03

176

178

180

Hf Sig

b 176

176

age

ı U-Pb

Lu-Hf

177

(V)

177

(t)

İ+I (Ga) (Ma) (Ma) conc seq

A46_40_seq2 0.0240 19 0.

00079 5 1.46716 1.

88675 13 0.282549 17 0.282541 2.2 0.6 1.02 487 7 99 2

A47_40_seq2 0.0465 67 0

.00151 19 1.46716

1.88666 11 0.282710 27 0.282697 7.5 0.9 0.72 477 7 98 2

A49_26_seq2 0.0363 30 0

.00124 8 1.46710

1.88635 4 0.282678 42 0.282667 6.6 1.5 0.78 485 6 99 2

A50_40_seq2 0.0424 88 0

.00132 25 1.46720

1.88701 12 0.282689 22 0.282677 7.1 0.8 0.76 492 8 98 2

A53_40_seq2 0.0459 39 0

.00148 10 1.46720

1.88683 13 0.282559 25 0.282545 2.2 0.9 1.02 480 7 97 2

A56_40_seq2 0.0344 58 0

.00108 16 1.46711

1.88647 12 0.282675 27 0.282665 6.7 1.0 0.78 489 7 97 2

A58_40_seq2 0.0195 16 0.00063 4 1.46714 1.88653 11 0.282521 27 0.282515 1.3 1.0 1.07 489 10 100 2

A59_40_seq2 0.0394 38 0

.00129 10 1.46719

1.88678 13 0.282577 23 0.282565 3.4 0.8 0.97 501 7 97 2

A60_40_seq2 0.0510 49 0

.00168 14 1.46708

1.88637 9 0.282706 42 0.282691 7.1 1.5 0.74 466 9 96 2

A63_40_seq2 0.0284 23 0.00099 6 1.46723 1.88697 15 0.282620 25 0.282611 4.8 0.9 0.89 494 7 102 2

A64_40_seq2 0.0712 58 0

.00216 13 1.46714 1.

88633 12 0.282665 32 0.282645 6.2 1.1 0.82 498 9 101 2

A65_26_seq2 0.0162 13 0.00055 3 1.46711 1.88614 6 0.282550 36 0.282545 1.8 1.3 1.03 460 9 97 2

A72_40_seq2 0.0309 33 0.00097 8 1.46722 1.88690 11 0.282728 24 0.282719 8.2 0.8 0.68 472 7 97 2

A73_40_seq2 0.0243 40 0.

00081 12 1.46727 1.

88690 12 0.282688 28 0.282681 6.7 1.0 0.76 464 8 98 2

A74_40_seq2 0.0163 28 0.00055 8 1.46717 1.88702 13 0.282695 26 0.282691 6.9 0.9 0.74 457 6 97 2

A75_40_seq2 0.0135 16 0.00049 5 1.46719 1.88667 12 0.282656 22 0.282651 5.8 0.8 0.81 474 8 97 2

A77_40_seq2 0.0489 49 0

.00156 13 1.46722

1.88669 11 0.282672 26 0.282657 6.6 0.9 0.79 500 8 96 2

A78_26_seq2 0.0134 19 0.00041 6 1.46712 1.88631 8 0.282613 39 0.282609 4.5 1.4 0.89 482 8 98 2

A81_26_seq2 0.0523 56 0

.00167 16 1.46709

1.88621 7 0.282675 33 0.282660 6.2 1.2 0.80 474 7 96 2

A82_26_seq2 0.0453 38 0

.00143 9 1.46711

1.88666 9 0.282712 25 0.282700 7.3 0.9 0.72 465 7 99 2

A84_40_seq2 0.0233 19 0.00080 5 1.46720 1.88660 13 0.282629 26 0.282621 4.8 0.9 0.87 473 8 98 2

A85_40_seq2 0.0634 61 0

.00198 16 1.46715

1.88666 12 0.282720 23 0.282702 7.6 0.8 0.71 470 8 99 2

A86_40_seq2 0.0631 54 0

.00199 13 1.46718

1.88691 13 0.282714 29 0.282695 7.8 1.0 0.72 493 7 92 2

A87_40_seq2 0.0590 51 0

.00184 13 1.46723

1.88667 11 0.282700 26 0.282683 7.0 0.9 0.75 477 7 99 2

A89_40_seq2 0.0295 40 0.

00093 12 1.46728 1.

88678 10 0.282596 26 0.282588 3.9 0.9 0.93 486 8 96 2

A90_40_seq2 0.0558 53 0

.00178 14 1.46716

1.88675 12 0.282606 26 0.282590 3.6 0.9 0.93 469 7 97 2

A91_40_seq2 0.0502 48 0

.00161 12 1.46726

1.88675 13 0.282587 23 0.282573 3.1 0.8 0.97 476 8 96 2

A93_40_seq2 0.0654 66 0

.00209 18 1.46715

1.88656 10 0.282712 31 0.282693 7.5 1.1 0.73 484 8 97 2

A94_40_seq2 0.0941 77 0

.00282 18 1.46722 1.

88662 9 0.282729 30 0.282704 7.8 1.1 0.71 478 7 100 2

A96_40_seq2 0.0687 70 0

.00220 19 1.46723 1.

88679 12 0.282699 26 0.282679 7.0 0.9 0.76 481 7 98 2

A98_40_seq2 0.0466 47 0

.00153 13 1.46723

1.88673 11 0.282633 23 0.282619 5.2 0.8 0.87 495 9 98 2

A99_40_seq2 0.0825 72 0

.00260 18 1.46726 1.

88671 10 0.282717 26 0.282694 7.5 0.9 0.73 483 7 99 2

A100_40_seq2 0.0848 110 0

.00260 31 1.46720 1

.88665 11 0.282655 25 0.282633 4.9 0.9 0.86 463 7 95 2

A108_26_seq2 0.0245 44 0.00083 12 1.46722 1.88642 5 0.282610 34 0.282603 4.0 1.2 0.91 468 7 97 2

A112_40_seq2 0.0401 40 0

.00125 11 1.46717

1.88679 12 0.282702 31 0.282691 7.5 1.1 0.73 484 8 99 2

A113_40_seq2 0.0824 84 0

.00255 22 1.46716 1

.88669 10 0.282747 38 0.282725 8.4 1.3 0.67 470 7 93 2

A117_40_seq2 0.0484 47 0

.00150 12 1.46724

1.88680 16 0.282678 29 0.282664 6.8 1.0 0.78 499 7 100 2

A121_40_seq2 0.0399 38 0

.00123 9 1.46721

1.88637 12 0.282546 23 0.282535 1.9 0.8 1.04 483 8 98 2

A124_40_seq2 0.0457 38 0

.00144 9 1.46712

1.88648 12 0.282675 26 0.282662 6.6 0.9 0.79 490 7 99 2

A132_40_seq2 0.0478 42 0

.00159 11 1.46721

1.88652 13 0.282611 21 0.282597 4.2 0.8 0.92 486 8 104 2

A138_40_seq2 0.1115 122 0

.00328 30 1.46719

1.88683 12 0.282771 28 0.282742 9.2 1.0 0.63 479 7 99 2

A143_40_seq2 0.0317 30 0

.00100 8 1.46719

1.88663 12 0.282678 24 0.282668 6.9 0.8 0.77 496 8 101 2

A164_26_seq2 0.0290 25 0.00098 7 1.46716 1.88620 5 0.282602 28 0.282592 4.6 1.0 0.91 512 7 99 2

A173_40_seq2 0.0457 44 0

.00137 11 1.46714

1.88635 11 0.282692 23 0.282679 6.7 0.8 0.76 468 7 94 2

A178_40_seq2 0.0178 39 0.

00055 12 1.46714 1.

88637 14 0.282665 33 0.282660 6.2 1.2 0.80 478 7 97 2

Grain

±2ı

İ+I

(t)

Quoted uncertainties (absolute) relate to the last quoted figure. The effect of the inter-element fractionation on Lu/Hf was estimated to be about 6 % or less

based on analyses of the GJ-ϭ ĂŶĚ WůĞƐŽǀŝēĞ ǌŝƌĐŽŶ͘ ĐĐƵƌĂĐǇ ĂŶĚ ƌĞƉƌŽĚƵĐŝďŝůŝƚǇ ǁĂƐ ĐŚĞĐŬĞĚ ďǇ ƌĞƉĞĂƚĞĚ ĂŶĂůǇƐĞƐ ŽĨ ƌĞĨĞƌĞŶĐĞ ǌircon GJ-ϭ ĂŶĚ WůĞƐŽǀŝēĞ

(data given as mean with 2 standard deviation uncertainties).

(a)

176

Yb/

177

Hf = (

176

Yb/

173

Yb)

true

x (

173

Yb/

177

Hf)

meas

x (M

173(Yb)

177(Hf)

)

ɴ;,ĨͿ

͕ ɴ;,ĨͿ с ůŶ;;

179

Hf/

177

true

)/(

179

Hf/

177

measured

)) / ln(M

179(Hf)

177(Hf)

), M = mass of

respective isotopes. The

176

Lu/

177

Hf was calculated in a similar way using

175

Lu/

177

,Ĩ ĂŶĚ ɴ;zďͿ͘

(b)

Mean Hf signal in volts.

(c)

Uncertainties are quadratic additions of the within-run precision and the daily reproducibility of the 40ppb-JMC475 solution. Uncertainties for the JMC475

quoted at 2SD (2 standard deviation).

(d)

Initial

176

Hf/

177

,Ĩ ĂŶĚ ɸ,Ĩ ĐĂůĐƵůĂƚĞĚ ƵƐŝŶŐ ƚŚĞ ĂƉƉĂƌĞŶƚ h-Pb age determined by LA-ICP-MSdating (see column f), and the CHUR parameters:

176

Lu/

177

Hf =

0.0336, and

176

Hf/

177

Hf = 0.282785 (Bouvier et al. 2008).

(e)

Two stage model age in Ga using measured

176

Lu/

177

Lu of each spot (first stage = age of zircon), a value of 0.0113 for the average continental crust (second

stage, values compiled from Rudnick and Gao (2003), and depleted mantle

176

Lu/

177

Lu = 0.0379, and

176

Hf/

177

Hf = 0.283164.

(f)

Apparent U-Pb age determined by LA-ICP-MS.

(g)

U-Pb age concordance (%).

(h)

Sequence in which Lu-Hf analyses were performed. Standard analyses for each sequence are showed on Table 12.

329