discordancy

noun

1. (countable, uncountable)discordance

   “A linear regression through these 18 data sets yields an upper intercept age of 555.4 ± 1.6 Ma [mean squared weighted deviation (MSWD) = 0.10] and a lower intercept indistinguishable from 0 Ma, suggesting that normal discordancy is a function of recent Pb loss.”