ba εHf(T) versus age diagram showing the results of this study for single zircon grains (with 2σ error bars). Similar to the Nd isotope results, CA2 samples within both the SE- and NW-regions display large variability in chemical composition (e.g., SiO2: ~60–75 wt%), but only small variability in εHf(T); b εNd(T) versus εHf(T) diagram. Data points include single zircon εHf(T) from this study and WR εNd(T) from this study and the literature (Beyth et al. 1994; Katzir et al. 2007a; Moghazi et al. 1998; Stein and Goldstein 1996) for the same rocks. Also shown are WR εNd(T)–εHf(T) fields for the ~630 Ma Elat schistose dikes from southern Israel (Katz et al. 2004) located in the NW-region and for rocks from southern Sudan (Vervoort and Blichert-Toft 1999)
εHf(T) values of CA2 and AL rocks are plotted on a locality map
in Fig. 3d and on a εHf(T) versus age diagram in
An εNd(T) versus εHf(T) diagram is presented in
The NW-region rocks, excluding the Timna porphyritic granite, are
located to the lower-left in Fig. 6b along with WR
εNd(T)–εHf(T) of the schist dikes, whereas the SE-region rocks plot
at a more upper-right location closer to the field of SE Sudan
Only the Sharm pluton plots well above the juvenile crust field
displaying the most extensive εNd(T)–εHf(T) decoupling
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