serie NOVA TERRA nº 48

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Table Ig2-Hf
Lu, Yb and Hf LA-MC-ICPMS data of zircon crystals from sample GCH-26
176Yb a 176Lu a 178 Hf 180 Hf SigHf
b 176Hf 176 Hf d “ ı c TDM
e agef “ ı U-Pb g Lu-Hf h
177 Hf 177Hf 177 Hf 177 Hf (V) 177Hf 177Hf (t) İ+I (Ga) (Ma) (Ma) conc seq
GCH-26_60 0.0657 57 0.00230 15 1.46706 1.88660 6 0.282659 38 0.282639 5.4 1.3 0.84 476 7 91 6
GCH-26_59 0.0324 35 0.00114 10 1.467111.88663 6 0.282301 32 0.282290 -6.2 1.1 1.50 509 8 91 6
GCH-26_58 0.0481 42 0.00165 11 1.467111.88659 5 0.282685 30 0.282669 7.1 1.1 0.77 504 10 95 6
GCH-26_57 0.0149 13 0.00060 4 1.46710 1.88652 8 0.282678 28 0.282674 4.7 1.0 0.81 386 7 95 6
GCH-26_56 0.0099 9 0.00040 3 1.46707 1.88659 8 0.282710 26 0.282707 6.0 0.9 0.74 392 6 93 6
GCH-26_54 0.0036 3 0.00015 1 1.46698 1.88641 7 0.282656 34 0.282655 5.2 1.2 0.82 438 8 65 6
GCH-26_53 0.0108 10 0.00056 4 1.46702 1.88634 5 0.282695 38 0.282684 19.8 1.3 0.50 1042 343 52 6
GCH-26_52 0.0622 55 0.00213 15 1.46704 1.88645 4 0.282633 38 0.282614 4.5 1.3 0.89 474 7 84 6
GCH-26_51 0.0057 6 0.00022 2 1.46712 1.88667 6 0.282655 34 0.282654 3.8 1.2 0.85 379 8 95 6
GCH-26_50 0.0114 10 0.00038 3 1.46714 1.88672 6 0.282705 25 0.282702 6.3 0.9 0.74 415 7 57 6
GCH-26_49 0.0162 28 0.00062 10 1.46704 1.88660 6 0.282680 30 0.282673 9.1 1.1 0.72 585 14 95 6
GCH-26_48 0.0669 60 0.00226 16 1.46692 1.88610 3 0.282655 41 0.282630 7.6 1.4 0.81 585 9 93 6
GCH-26_47 0.0055 6 0.00027 3 1.46713 1.88684 6 0.282647 31 0.282645 3.3 1.1 0.87 372 18 74 6
GCH-26_46 0.0357 30 0.00129 8 1.467151.88666 4 0.282661 37 0.282648 6.3 1.3 0.81 501 7 103 6
GCH-26_45 0.0093 9 0.00033 3 1.46708 1.88659 6 0.282687 27 0.282684 6.0 0.9 0.77 432 9 64 6
GCH-26_44 0.0494 42 0.00171 11 1.467151.88656 5 0.282645 37 0.282630 4.5 1.3 0.87 450 7 76 6
GCH-26_43 0.0070 6 0.00026 21.46706 1.88656 7 0.282710 32 0.282708 5.6 1.1 0.74 374 17 64 6
GCH-26_42 0.0218 20 0.00125 9 1.467221.88669 6 0.282658 33 0.282648 4.5 1.2 0.84 417 7 89 6
GCH-26_41 0.0550 101 0.00193 33 1.467181.88661 4 0.282674 45 0.282656 6.5 1.6 0.79 497 7 100 6
GCH-26_40 0.0121 11 0.00067 5 1.46699 1.88652 6 0.282680 33 0.282675 5.5 1.2 0.79 423 31 68 6
GCH-26_39 0.0403 33 0.00143 9 1.467081.88634 4 0.282690 41 0.282677 7.5 1.4 0.75 509 7 90 6
GCH-26_38 0.0250 21 0.00098 6 1.46703 1.88649 4 0.282569 39 0.282530 37.8 1.4 0.31 2062 240 27 6
GCH-26_32 0.0356 56 0.00122 18 1.467191.88666 4 0.282679 35 0.282667 7.3 1.3 0.77 513 7 91 6
GCH-26_31 0.0130 15 0.00059 6 1.46708 1.88673 6 0.282705 31 0.282700 6.3 1.1 0.74 418 9 83 6
GCH-26_30 0.0028 3 0.00013 1 1.46710 1.88680 6 0.282667 31 0.282666 4.2 1.1 0.82 379 6 93 6
GCH-26_29 0.0409 46 0.00143 14 1.467011.88673 4 0.282259 36 0.282246 -8.4 1.3 1.60 477 7 70 6
GCH-26_28 0.0137 11 0.00038 2 1.46704 1.88647 7 0.282714 29 0.282711 6.3 1.0 0.73 402 6 100 6
GCH-26_27 0.0217 22 0.00080 7 1.46710 1.88670 4 0.282651 37 0.282644 5.7 1.3 0.83 478 7 96 6
GCH-26_26 0.0064 7 0.00026 2 1.46698 1.88644 5 0.282687 33 0.282685 4.6 1.2 0.79 366 96 42 6
GCH-26_25 0.0056 6 0.00023 2 1.46706 1.88670 6 0.282696 34 0.282695 5.2 1.2 0.77 379 6 95 6
GCH-26_24 0.0058 5 0.00024 1 1.46703 1.88650 7 0.282685 31 0.282683 5.1 1.1 0.79 391 8 100 6
GCH-26_23 0.0596 48 0.00204 13 1.466971.88625 4 0.282649 38 0.282629 6.3 1.4 0.83 531 9 96 6
GCH-26_22 0.0065 6 0.00022 2 1 .46708 1.88665 6 0.282690 27 0.282688 5.3 1.0 0.77 393 6 93 6
GCH-26_21 0.0074 7 0.00029 21.46713 1.88658 7 0.282685 28 0.282683 4.9 1.0 0.79 379 20 96 6
GCH-26_20 0.0112 10 0.00036 3 1.46707 1.88658 7 0.282696 26 0.282694 5.7 0.9 0.76 400 7 94 6
GCH-26_19 0.0630 78 0.00194 19 1.466971.88634 5 0.282646 34 0.282629 5.1 1.2 0.86 478 7 109 6
GCH-26_18 0.0108 9 0.00039 2 1.46705 1.88671 7 0.282660 23 0.282657 5.0 0.8 0.82 426 12 57 6
GCH-26_17 0.0102 10 0.00038 3 1.46707 1.88669 6 0.282665 22 0.282663 4.4 0.8 0.83 391 9 91 6
GCH-26_16 0.0099 9 0.00036 3 1.46699 1.88643 6 0.282685 30 0.282683 5.0 1.1 0.79 388 6 96 6
GCH-26_15 0.0169 15 0.00064 5 1.46699 1.88632 6 0.282668 42 0.282663 4.3 1.5 0.83 387 7 97 6
GCH-26_14 0.0034 3 0.00015 1 1.46711 1.88660 7 0.282698 31 0.282696 11.1 1.1 0.66 639 11 93 6
GCH-26_13 0.0052 5 0.00025 2 1.46697 1.88628 6 0.282684 47 0.282683 4.6 1.7 0.80 371 17 1133 6
GCH-26_12 0.0080 8 0.00030 2 1.46711 1.88650 8 0.282685 28 0.282685 -0.7 1.0 0.89 130 8 32 6
GCH-26_11 0.0372 34 0.00137 10 1.467041.88644 5 0.282546 31 0.282532 2.6 1.1 1.03 518 7 99 6
GCH-26_10 0.0060 5 0.00023 2 1.46707 1.88660 8 0.282691 24 0.282690 5.4 0.8 0.77 395 6 91 6
GCH-26_9 0.0421 37 0.00137 9 1.467041.88651 4 0.282643 41 0.282629 6.2 1.4 0.84 524 8 104 6
GCH-26_8 0.0012 1 0.00004 01.46707 1.88652 6 0.282662 26 0.282662 5.5 0.9 0.81 444 7 84 6
GCH-26_7 0.0090 8 0.00032 3 1.46711 1.88668 8 0.282649 21 0.282646 3.7 0.8 0.86 387 6 95 6
GCH-26_6 0.0206 38 0.00066 10 1.46718 1.88664 8 0.282669 24 0.282664 4.7 0.9 0.82 403 9 104 6
İ+I(t)
d Grain “ ı “ ı ±2ıc
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) 176Yb/177Hf = (176 Yb/173Yb)true x (173Yb/177Hf)meas x (M 173(Yb)/M177(Hf))ɴ;,ĨͿ͕ ɴ;,ĨͿ с ůŶ;;179Hf/177 Hftrue)/( 179 Hf/177Hfmeasured)) / ln(M179(Hf) /M177(Hf) ), M = mass of
respective isotopes. The 176Lu/ 177Hf was calculated in a similar way using 175Lu/ 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) Initial176Hf/177 ,Ĩ ĂŶĚ ɸ,Ĩ ĐĂůĐƵůĂƚĞĚ ƵƐŝŶŐ ƚŚĞ ĂƉƉĂƌĞŶƚ h-Pb age determined by LA-ICP-MSdating (see column f), and the CHUR parameters: 176Lu/177 Hf =
0.0336, and 176Hf/177 Hf = 0.282785 (Bouvier et al. 2008).
(e) Two stage model age in Ga using measured 176Lu/ 177Lu 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 mantle176Lu/ 177Lu = 0.0379, and 176Hf/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.
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