DR law. Interference of 176 Lu and 176 Yb onto 176 Hf was corrected by measuring 176 Lu and

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1 DR LABORATORY PROCEDURES U-Pb dating U-Pb dating was performed on the LA-ICPMS at Tokyo Institute of Technology with ~20 µm ablation pits. The 207 Pb/ 206 Pb ratio was corrected using NIST 610 standard reference material, and the 206 Pb/ 238 U and 232 Th/ 238 U were corrected using reference zircon Nancy (Wiedenbeck et al., 1995). Analytical uncertainties combine the counting statistics and the 2 S.E. of standard analyses, added in quadrature. The common Pb correction assumed recent Pb loss and a common Pb composition given by the two-stage evolution model (Stacey and Kramers, 1975). No common Pb correction has been applied to analyses for which the corrected ratio is within 2 sigma error of the uncorrected ratio. Lu-Hf isotope analyses Lu-Hf isotope analyses were performed on the LA-MC-ICPMS at Tokyo Institute of Technology. Analyses were carried out with beam diameters of 35 or 63 µm, 3 10 Hz repetition rates, and ~60 sec ablation times. Mass discrimination effects were corrected by normalizing to 179 Hf/ 177 Hf = (Patchett et al., 1981) for Hf and Lu, and to 173 Yb/ 171 Yb = (Thirlwall and Anczkiewicz, 2004) for Yb, using an exponential law. Interference of 176 Lu and 176 Yb onto 176 Hf was corrected by measuring 176 Lu and 173 Yb and using 176 Lu/ 176 Lu = (Chu et al., 2002) and 176 Yb/ 173 Yb = (Thirlwall and Anczkiewicz, 2004), respectively. For the calculation of initial Hf isotope ratio, the decay constant for 176 Lu proposed by Scherer et al. (2001) (1.865 x yr -1 ) was used. REFERENCE CITED Chu, N.C., Taylor, R.N., Chavagnac, V., Nesbitt, R.W., Boella, M., Milton, J.A., German, C.R., Bayon, G. and Burton, K., Hf isotope ratio analysis using multi-collector inductively coupled plasma mass spectrometry: an evaluation of isobaric intereference corrections: Jounal of Analytical Atomic Spectrometry, v. 17, p Patchett, P.J., Kuovo, O., Hedge, C.E. and Tatsumoto, M., Evolution of continental crust and mantle heterogeneity: evidence from Hf isotopes: Contribution to Mineralogy and Petrology, v. 78, p Scherer, E., Münker, C. and Mezger, K., Calibration of the Lutetium-Hafnium

2 DR Clock: Science, v. 293, p Thirlwall, M. and Anczkiewicz, R., Multidynamic isotope ratio analysis using MC-ICP-MS and the causes of secular drift in Hf, Nd and Pb isotope ratios: International Journal of Mass Spectrometry, v. 235, p Stacey, J.S. and Kramers, J.D., Approximation of terrestrial lead isotope evolution by a two-stage model: Earth and Planetary Sciences Letters, v. 26, p Wiedenbeck, M., Alle, P., Corfu, F., Griffin, W.L., Meier, M., Ober, F., Von Quant, A., Roddick, J.C. and Spiegel, J., Three natural zircon standards for U-Th-Pb, Lu-Hf, trace element and REE analyses: Geostandard Newsletter, v. 19, p

3 Iizuka et al. Fig. DR1 1.1 Ga Keweenawan rift Ga anorogenic magmatism Ga granite-rhyolite <0.6 Ga Ga Ga Ga >2.5 Ga Cordillera 500 km Yavapai -Mazatzal Wyoming Trans-Hudson Superior KR Penokean Grenville Appalachians Sierra Madre Ouachitas MP1 Gulf of Mexico Figure DR1. Geologic map of basement in the North American continent (modified after Hoffman, 1989a; Rivers, 1997). Sample locality of MP1 ( N, W).

4 Iizuka et al., Table DR1 p.1 Table DR1. U-Pb and Hf isotope data MP1 207 Pb/ 206 Pb (2σ) 206 Pb/ 238 U (2σ) U-Pb age (2σ) λ 176 Lu: x (yr -1 )** λ 176 Lu: x (yr -1 )** (Ma) nitial 176 Hf/ 177 Hf (2 S.EHf(T )DM DM1(Ma) DM2 (Ma) nitial 176 Hf/ 177 Hf (2 S.EHf(T )DM DM1(Ma) DM2 (Ma) zrn ± ± ± ± ± zrn ± ± ± ± ± zrn003* ± ± ± ± ± zrn004* ± ± ± ± ± zrn ± ± ± ± ± zrn006* ± ± ± ± zrn007* ± ± ± ± ± zrn008* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn012* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn015* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn018* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn029* ± ± ± ± ± zrn030* ± ± ± ± zrn031* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ±

5 zrn034* ± ± ± ± ± zrn035* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn040* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn043* ± ± ± ± ± zrn044* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn048* ± ± ± ± ± zrn049* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn052* ± ± ± ± ± zrn053* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn059* ± ± ± ± ± zrn060* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn065* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn068* ± ± ± ± ± zrn069* ± ± ± ± ± zrn ± ± ± ± ± Iizuka et al., Table DR1 p.2

6 zrn ± ± ± ± ± zrn072* ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn085* ± ± ± ± ± zrn086* ± ± ± ± ± zrn ± ± ± ± ± zrn088* ± ± ± ± ± zrn089* ± ± ± ± ± zrn090* ± ± ± ± ± zrn091* ± ± ± ± ± zrn ± ± ± ± ± zrn093* ± ± ± ± ± zrn094* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn097* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn103* ± ± ± ± ± zrn104* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± Iizuka et al., Table DR1 p.3

7 zrn108* ± ± ± ± ± zrn109* ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn112* ± ± ± ± ± zrn ± ± ± ± ± zrn114* ± ± ± ± ± zrn ± ± ± ± ± zrn116* ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn119* ± ± ± ± zrn ± ± ± ± ± zrn121* ± ± ± ± ± zrn122* ± ± ± ± ± zrn123* ± ± ± ± ± zrn ± ± ± ± ± zrn125* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn128* ± ± ± ± ± zrn ± ± ± ± ± zrn130* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn135* ± ± ± ± ± zrn ± ± ± ± ± zrn137* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn140* ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn144* ± ± ± ± ± Iizuka et al., Table DR1 p.4

8 zrn145* ± ± ± ± ± zrn ± ± ± ± ± zrn147* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn151* ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn155* ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn159* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn162* ± ± ± ± ± zrn ± ± ± ± ± zrn164* ± ± ± ± ± zrn165* ± ± ± ± ± zrn ± ± ± ± ± zrn167* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn177* ± ± ± ± ± zrn178* ± ± ± ± ± zrn179* ± ± ± ± zrn ± ± ± ± ± zrn181* ± ± ± ± ± Iizuka et al., Table DR1 p.5

9 zrn182* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn186* ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn190* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn193* ± ± ± ± ± zrn194* ± ± ± ± ± zrn ± ± ± ± ± zrn196* ± ± ± ± ± zrn197* ± ± ± ± ± zrn198* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn201* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn207* ± ± ± 5 zrn208* ± ± ± ± ± zrn209* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn212* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn215* ± ± ± ± ± zrn ± ± ± ± ± zrn217* ± ± ± ± ± zrn ± ± ± ± ± Iizuka et al., Table DR1 p.6

10 zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn227* ± ± ± ± ± zrn ± ± ± ± ± zrn229* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn234* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn240* ± ± ± ± ± zrn ± ± ± ± ± zrn242* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± 39 zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± Iizuka et al., Table DR1 p.7

11 zrn256* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn259* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± 42 zrn ± ± ± 44 zrn ± ± ± ± ± zrn264* ± ± ± ± ± zrn ± ± ± ± ± zrn266* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn274* ± ± ± ± ± zrn275* ± ± ± ± ± zrn ± ± ± ± ± zrn277* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn285* ± ± ± 1 zrn ± ± ± ± ± zrn ± ± ± ± ± zrn288* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± Iizuka et al., Table DR1 p.8

12 zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± 32 zrn ± ± ± 37 zrn ± ± ± ± ± zrn ± ± ± ± ± zrn300* ± ± ± ± ± zrn ± ± ± 82 zrn ± ± ± ± ± zrn303* ± ± ± ± ± zrn304* ± ± ± ± zrn305* ± ± ± ± ± zrn ± ± ± ± ± zrn307* ± ± ± ± ± zrn ± ± ± ± ± zrn309* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn313* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn319* ± ± ± ± ± zrn ± ± ± 73 zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn329* ± ± ± ± ± Iizuka et al., Table DR1 p.9

13 zrn ± ± ± ± ± zrn ± ± ± ± ± zrn332* ± ± ± ± ± zrn333* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn340* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn346* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn351* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn357* ± ± ± ± zrn ± ± ± ± ± zrn359* ± ± 12 zrn360* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± Iizuka et al., Table DR1 p.10

14 zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn370* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± 54 zrn376* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn379* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn386* ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± 53 zrn ± ± ± ± ± zrn392* ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn ± ± ± ± ± zrn398* ± ± ± ± ± zrn399* ± ± ± ± ± zrn400* ± ± ± 3 zrn ± ± ± ± ± zrn402* ± ± ± ± zrn ± ± ± ± ± Iizuka et al., Table DR1 p.11