BABI – The Basaltic Achondrite Best Initial
Channel: Dominik Hezel
Date: 2019-10-21

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Basaltic achondrites have variable Rb/Sr ratios and can therefore be used to define an isochron. The The y-axis intercept of the isochron is then used to determine a solar system initial ratio for 87Sr/86Sr, assuming the achondrites formed from a reservoir with a CI chondritic 87Sr/86Sr ratio.