The statistical analysis and interpretation of imperfectly-fitted Rb-Sr isochrons from polymetamorphic terrains

Allegre, 1979, The Nd-Sr isotopic correlation in mantle materials and geodynamic consequences, Phys. Earth Planet. Int., 19, 293, 10.1016/0031-9201(79)90002-5 Baadsgaard, 1976, Mineral isotopic relationships in the polymetamorphic Amitsoq gneisses. Godthaab District. West Greenland, Geochim. Cosmochim. Acta, 40, 513, 10.1016/0016-7037(76)90219-2 Black, 1971, Isotopic dating of very early Precambrian amphibolite facies gneisses from the Godthaab District, West Greenland, Earth Planet. Sci. Lett., 12, 245, 10.1016/0012-821X(71)90208-1 Bridgwater, 1975, Field characters of the early Precambrian rocks from Saglek, Coast of Labrador, Can. Geol. Surv. Pap., 1A-74A, 287 Collerson, 1979, Metamorphic development of early Archaean tonalitic and trondhjemitic gneisses: Saglek area, Labrador, 205 Collerson, 1981 Collerson, 1981, Sm-Nd isotopic data for Archaean gneisses from northern Labrador Compston, 1979, The interpretation of scattered Rb-Sr isotopic data for early Archaean gneisses from Labrador and Greenland, 22 Cox, 1974 Creasy, 1956, Confidence limits for the gradient in the linear functional relationship, J.R. Stat. Soc., B18, 65 De Paolo, 1976, Inferences about magma sources and mantle structure from variations of 143Nd144Nd, Geophys. Res. Lett., 3, 743, 10.1029/GL003i012p00743 Grauert, 1974, Rb-Sr isotopic study on whole rocks and minerals from the Baltimore Gneiss of the Phoenix Dome, Baltimore County. Maryland, Carnegie Inst. Washington Yearb., 73, 1003 Grauert, 1974, Rb-Sr isotopic study on small whole-rock slabs and their minerals from the Manhatten Schist, Manhattan Prong, N.Y., Carneaie Inst. Washington Yearb., 73, 1007 Grauert, 1974, Geochronology of a polymetamorphic and anatectic gneiss region: the Moldanubicum of the area Lam-Deggendorf. eastern Bavaria Germany, Contrib. Mineral. Petrol., 45, 37, 10.1007/BF00371136 Hanny, 1975, Palaeozoic migmatites affected by high-grade Tertiary metamorphism in the Central Alps (Valle Bodengo, Italy), Contrib. Mineral. Petrol., 51, 173, 10.1007/BF00372078 Hofmann, 1973, Effect of regional metamorphism on whole-rock Rb-Sr systems in sediments, Carnegie Inst. Washington Yearb., 72, 299 Jager, 1976, Rb-Sr Attersbestimmungen an glimmern der Zentralalpen, Beitr. Geol. Karte Schweiz NF 134 Krogh, 1973, The effect of regional metamorphism on U-Pb systems in zircon and a comparison with Rb-Sr systems in the same whole rock and its constituent minerals, Carnegie Inst. Washington Yearb., 72, 601 Magaritz, 1978, Diffusion of Sr, Ba and Na in obsidian, Geochim. Cosmochim. Acta, 42, 595, 10.1016/0016-7037(78)90004-2 McIntyre, 1966, The statistical assessment of Rb-Sr isochrons, J. Geophys. Res., 71, 5459, 10.1029/JZ071i022p05459 Montgomery, 1978, Total-rock U-Pb and Rb-Sr systematics in the Imataca Series, Guayana Shield, Venezuela, Earth Planet. Sci. Lett., 39, 281, 10.1016/0012-821X(78)90204-2 Moorbath, 1972, Further rubidiumstrontium age determinations on the very early Precambrian rocks of the Godthȧab district. West Greenland, Nature Phys. Sci., 240, 78, 10.1038/physci240078a0 Morgan, 1975, Geology of the Precambrian Ramah Group and basement rocks in the Nachvak Fiord—Saglek Fiord area, North Labrador, Can. Geol. Surv. Pap. 74-54, 42 O'Nions, 1977, Variations in 142Nd144Nd and 87Sr86Sr ratios in oceanic basalts, Earth Planet. Sci. Lett., 34, 13, 10.1016/0012-821X(77)90100-5 Papanastassiou, 1969, Initial strontium isotopic abundances and the resolution of small time differences in the formation of planetary objects, Earth Planet. Sci. Lett., 5, 361, 10.1016/S0012-821X(68)80066-4 Richard, 1976, 143Nd144Nd a natural tracer: an application to oceanic basalts, Earth Planet. Sci. Lett., 31, 269, 10.1016/0012-821X(76)90219-3 Sprent, 1969 York, 1966, Least-squares fitting of a straight line, Can. J. Phys., 44, 1079, 10.1139/p66-090 York, 1969, Least-squares fitting of a straight line with correlated errors, Earth Planet. Sci. Lett., 5, 320, 10.1016/S0012-821X(68)80059-7