-
age = x ± y
(| z)
-
(207Pb/204Pb)c
(40Ar/36Ar)0
(Pb/Pb)c
(234U/238U)i
(230Th/238U)i
(234U/238U)a
(230Th/232Th)d
(230Th/232Th)0
(230Th/238U)a
(234U/238U)i
intercept
= x ± y
(| z)
-
MSWD = x, p(χ2) = y
-
dispersion = x ± y
Ludwig, K.R. and Titterington, D.M., 1994.
Calculation of 230Th/U isochrons, ages, and errors.
Geochimica et Cosmochimica Acta,
58(22), pp.5031-5042.
Ludwig, K.R., 1998. On the treatment of concordant uranium-lead ages.
Geochimica et Cosmochimica Acta, 62, 665-676.
Nicolaysen, L. Graphic interpretation of discordant age measurements
on metamorphic rocks, 1961. Annals of the New York Academy of
Sciences, 91(1):198–206.
Vermeesch, P. 2020. Unifying the U-Pb and Th-Pb methods: joint
isochron regression and common Pb correction,
Geochronology,
2(1), 119-131,
York, D., Evensen, N.M., Martinez, M.L. and De Basabe Delgado, J., 2004.
Unified equations for the slope, intercept, and standard errors of the
best straight line.
American Journal of Physics, 72(3), pp.367-375.