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Figure S15: Concordia diagram for U-Pb TIMS baddeleyite dating of sample EQ98-1305 (site 13 in Fig. S13). Unshaded ellipses are fractions excluded from the regression calculation. See Table S7.
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... amount of pale-medium brown baddeleyite of variable quality; approximately 60 grains were culled, from which seven fractions of crystals, ranging from 3-11 grains each, were chosen for analysis. One fraction comprised relatively dull crystals suspected to be baddeleyites with a fine microcrystalline coating of zircon (fraction Bd-2; Table S7 and Fig. S15). The data are relatively dispersed below Concordia, of which five fractions (Bd-1, -2, -3, -6 and -7) are collinear and regress to yield an upper intercept (anchored at 0 Ma) age of 1759 ± 4 Ma. We interpret this to represent the best estimate of the primary crystallization age for the dyke. Table S7: Baddeleyite U-Pb isotopic data ...
